2025
Khan, Jamshid; Din, Israf Ud; Alharthi, Abdulrahman I.; Alotaibi, Mshari A.; Nasir, Qazi; Thebo, Khalid
The Opportunities and Challenges of Using Nanomaterials as Photocatalysts for the Degradation of Environmental Pollutants Journal Article
In: Comments on Inorganic Chemistry, vol. 45, no. 6, pp. 568–613, 2025, ISSN: 1548-9574.
@article{Khan2025b,
title = {The Opportunities and Challenges of Using Nanomaterials as Photocatalysts for the Degradation of Environmental Pollutants},
author = {Jamshid Khan and Israf Ud Din and Abdulrahman I. Alharthi and Mshari A. Alotaibi and Qazi Nasir and Khalid Thebo},
doi = {10.1080/02603594.2025.2451829},
issn = {1548-9574},
year = {2025},
date = {2025-11-02},
journal = {Comments on Inorganic Chemistry},
volume = {45},
number = {6},
pages = {568--613},
publisher = {Informa UK Limited},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Khan, Jamshed; Alotaibi, Mshari A.; Din, Israf Ud; Alharthi, Abdulrahman I.; Saeed, Tooba; Nasir, Qazi; Min, Ho Soon; Naeem, Abdul; Bakht, Md Afroz; Ahmad, Akil
Photocatalytic Degradation of Organophosphates Using Nanocrystalline ZnO Synthesized by Modified Sonochemical Method Journal Article
In: Catalysts, vol. 15, no. 9, 2025, ISSN: 2073-4344.
Abstract | Links | BibTeX | Tags:
@article{Khan2025,
title = {Photocatalytic Degradation of Organophosphates Using Nanocrystalline ZnO Synthesized by Modified Sonochemical Method},
author = {Jamshed Khan and Mshari A. Alotaibi and Israf Ud Din and Abdulrahman I. Alharthi and Tooba Saeed and Qazi Nasir and Ho Soon Min and Abdul Naeem and Md Afroz Bakht and Akil Ahmad},
doi = {10.3390/catal15090820},
issn = {2073-4344},
year = {2025},
date = {2025-09-00},
journal = {Catalysts},
volume = {15},
number = {9},
publisher = {MDPI AG},
abstract = {Organophosphates, especially their ester, are not only toxic to humans but equally toxic to aquatic and other animal life on Earth when exposed to them. Here, we designed an efficient and easy way to degrade hexamethyl phosphoramide and omethoate organophosphate catalytically in a natural way into non-toxic products. Both hexamethyl phosphoramide and omethoate are possible carcinogens and cause serious health issues in humans and other animals when exposed to them. In this work, a modified sonochemical method was used for the synthesis of ZnO nanoparticles using zinc acetate dihydrate, ethylenediamine dihydrochloride, and polyvinylpyrrolidone. Sodium hydroxide was used as the precipitating agent, and distilled water was used as the solvent. An Elmasonic ultra-sonicator with 240-watt power was used for the preparation of ZnO nanoparticles. The synthesized ZnO nanoparticles with a high surface area (250 m2/g), average particle size of 23 ± 1 nm, and a mesoporous structure with 1.858 nm average pore size were then used for the degradation of organophosphate, i.e., hexamethyl phosphoramide and omethoate pesticide, using 10 µL of concentration to check their catalytic efficiency for the first time. The degradation products were identified using gas chromatography–electron impact mass spectrometry (GC/EIMS). The results showed that omethoate was completely degraded, while hexamethyl phosphoramide showed partial degradation, both producing fewer toxic intermediates. },
keywords = {},
pubstate = {published},
tppubtype = {article}
}
2024
Nasir, Qazi; Suleman, Humbul; Majeed, Wameath S. Abdul
Application of machine learning on hydrate formation prediction of pure components with water and inhibitors solution Journal Article
In: Can J Chem Eng, vol. 102, no. 11, pp. 3953–3981, 2024, ISSN: 1939-019X.
Abstract | Links | BibTeX | Tags:
@article{Nasir2024,
title = {Application of machine learning on hydrate formation prediction of pure components with water and inhibitors solution},
author = {Qazi Nasir and Humbul Suleman and Wameath S. Abdul Majeed},
doi = {10.1002/cjce.25291},
issn = {1939-019X},
year = {2024},
date = {2024-11-00},
journal = {Can J Chem Eng},
volume = {102},
number = {11},
pages = {3953--3981},
publisher = {Wiley},
abstract = {Abstract
The present work investigates the use of machine learning approaches for the prediction of hydrate formation pressure (HFP) in gas hydrate systems. Advanced machine learning models, including the decision tree regressor (DTR), random forest regressor (RFR), extreme gradient boosting (XGB), gradient boosting regressor (GBR), histogram gradient boosting regressor (HGBR), and CatBoost regressor (CB), are trained and evaluated on a large dataset consists of 3137 experimental data points. The models are evaluated using R‐squared (
R
2
), mean squared error (MSE), mean absolute error (MAE), and root mean squared error (RMSE). The study indicates that for the intent of HFP prediction, CatBoost outperformed all other machine learning models. It demonstrated high accuracy on the testing set with an
R
2
value of 0.9922, and with the lowest RMSE (1.61 × 10
−3
), MAE (7.90 × 10
−4
), and MSE (2.58 × 10
−6
), CatBoost strengthened its prediction ability.
},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The present work investigates the use of machine learning approaches for the prediction of hydrate formation pressure (HFP) in gas hydrate systems. Advanced machine learning models, including the decision tree regressor (DTR), random forest regressor (RFR), extreme gradient boosting (XGB), gradient boosting regressor (GBR), histogram gradient boosting regressor (HGBR), and CatBoost regressor (CB), are trained and evaluated on a large dataset consists of 3137 experimental data points. The models are evaluated using R‐squared (
), mean squared error (MSE), mean absolute error (MAE), and root mean squared error (RMSE). The study indicates that for the intent of HFP prediction, CatBoost outperformed all other machine learning models. It demonstrated high accuracy on the testing set with an
value of 0.9922, and with the lowest RMSE (1.61 × 10
), MAE (7.90 × 10
), and MSE (2.58 × 10
), CatBoost strengthened its prediction ability.
Gul, Habiba; Bilal, Muhammad; Hussain, Tasleem; Din, Israf Ud; Mubashir, Muhammad; Nasir, Qazi
Effects of Ni Loadings on the Structure and Morphology of Carbon Nanotubes Using Nickel Doped Iron Oxide Catalysts Journal Article
In: ChemistrySelect, vol. 9, no. 38, 2024, ISSN: 2365-6549.
Abstract | Links | BibTeX | Tags:
@article{Gul2024,
title = {Effects of Ni Loadings on the Structure and Morphology of Carbon Nanotubes Using Nickel Doped Iron Oxide Catalysts},
author = {Habiba Gul and Muhammad Bilal and Tasleem Hussain and Israf Ud Din and Muhammad Mubashir and Qazi Nasir},
doi = {10.1002/slct.202402285},
issn = {2365-6549},
year = {2024},
date = {2024-10-00},
journal = {ChemistrySelect},
volume = {9},
number = {38},
publisher = {Wiley},
abstract = {Abstract
Iron oxide and their different doped iron oxide catalyst have been used for decades and are considered as efficient catalysts in several synthesis schemes including synthesis of carbon nanotubes. The iron oxide of the catalyst is abundant in nature, high catalytic activity at low over potentials, stability in basic media and low cost, making it environmentally and economically attractive. Nickel doped iron oxide catalyst have not been reported in the literature. Doping of nickel over iron oxide catalyst, different percentage 1 %, 5 %, 10 % and 20 % were done by impregnation method. The samples were characterized by X‐Ray powder Diffraction (XRD), Fourier‐Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscope (SEM), Energy Dispersive X‐ray (EDX) and Thermo Gravimetric Analysis (TGA). Nickel doped iron oxide was used as catalyst for the synthesis of carbon nanotubes (CNTs) and doping changed the morphology of carbon nanotube (CNTs). FTIR results confirmed the doping and presence of different functional groups. Chemical vapor deposition (CVD) was carried out for the synthesis of multiwall carbon nanotubes (MWCNTs) on nickel doped iron oxide catalyst for different percentage (1 %, 5 %, 10 % and 20 %) separately. CVD assembly was carried in tube furnace and the reaction was checked at two different temperature i.e 700 °C and 750 °C and using methane and compressed natural gas (CNG) as precursors. The catalyst was activated in the furnace at 800 °C for an hour. Methane and argon were used in proportion 2 : 1 inside the furnace. SEM showed formation of CNTs at 750 °C with CNG precursor. Formation of CNTs increased with increasing doping with this CNTs was confirmed by SEM. },
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Ngwu, Godwin; Suleman, Humbul; Ahmad, Faizan; Qadir, Danial; Shamair, Zufishan; Nasir, Qazi; Nawaz, Muhammad
Passive Direct Air Capture of Carbon Dioxide with an Alkaline Amino Acid Salt in Water-Based Paints Journal Article
In: Energies, vol. 17, no. 2, 2024, ISSN: 1996-1073.
Abstract | Links | BibTeX | Tags:
@article{Ngwu2024,
title = {Passive Direct Air Capture of Carbon Dioxide with an Alkaline Amino Acid Salt in Water-Based Paints},
author = {Godwin Ngwu and Humbul Suleman and Faizan Ahmad and Danial Qadir and Zufishan Shamair and Qazi Nasir and Muhammad Nawaz},
doi = {10.3390/en17020320},
issn = {1996-1073},
year = {2024},
date = {2024-01-00},
journal = {Energies},
volume = {17},
number = {2},
publisher = {MDPI AG},
abstract = {The current study presents the first results of the passive capture of carbon dioxide from the air in aqueous sodium lysinate solutions at ambient conditions. The salt has shown good passive direct air capture (DAC) properties for carbon dioxide with spent solutions exhibiting more than 5% carbon dioxide by weight. Moreover, different quantities of sodium lysinate solutions were mixed with three commercial water-based paints, and their passive DAC performance was studied for 45 days. An average improvement of 70% in passive DAC capacity compared to the control sample was observed across all the studied paint samples. The results establish that a litre of water-based paint doped with sodium lysinate can absorb up to 40 g of CO2 and fix it stably for a short period of time, i.e., 45 days. Such paints can be used to directly capture carbon dioxide from the air. However, further research is required to address various technicalities and establish long-term sequestration. },
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Nasir, Qazi
Hydrate formation challenges in pipelines: A persistent threat to flow assurance Book Chapter
In: Advances and Technology Development in Greenhouse Gases: Emission, Capture and Conversion, pp. 415–443, Elsevier, 2024, ISBN: 9780443190674.
@inbook{Nasir2024b,
title = {Hydrate formation challenges in pipelines: A persistent threat to flow assurance},
author = {Qazi Nasir},
doi = {10.1016/b978-0-443-19067-4.00014-0},
isbn = {9780443190674},
year = {2024},
date = {2024-00-00},
booktitle = {Advances and Technology Development in Greenhouse Gases: Emission, Capture and Conversion},
pages = {415--443},
publisher = {Elsevier},
keywords = {},
pubstate = {published},
tppubtype = {inbook}
}
2023
Nasir, Qazi; Majeed, Wameath S. Abdul; Suleman, Humbul
Predicting Gas Hydrate Equilibria in Multicomponent Systems with a Machine Learning Approach Journal Article
In: Chem Eng & Technol, vol. 46, no. 9, pp. 1854–1867, 2023, ISSN: 1521-4125.
Abstract | Links | BibTeX | Tags:
@article{Nasir2023,
title = {Predicting Gas Hydrate Equilibria in Multicomponent Systems with a Machine Learning Approach},
author = {Qazi Nasir and Wameath S. Abdul Majeed and Humbul Suleman},
doi = {10.1002/ceat.202300055},
issn = {1521-4125},
year = {2023},
date = {2023-09-00},
journal = {Chem Eng & Technol},
volume = {46},
number = {9},
pages = {1854--1867},
publisher = {Wiley},
abstract = {Abstract Natural gas production and transportation can be threatened by gas hydrate plugging, especially in offshore environments with low temperatures and high pressures. This can cause pipeline blockages, increased back pressure, production stoppage, and pipeline ruptures. Machine learning (ML) models were created to predict gas hydrate formation in multicomponent systems with and without inhibitors. The models utilized input parameters such as gas‐mixture specific gravity, pressure, and inhibitor concentrations, which were fed into five supervised ML algorithms. The accuracy of the models' predictions was compared, and three models had accuracy greater than 90%, while two had accuracies between 80 and 90%. },
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Abdul‐Majeed, Wameath S.; Nasir, Qazi; Alajmi, Muzna H.; Almaqbali, Khaloud A.
Evaluation of two plumes jet plasma reactor for plasmolysis of
In: J Adv Manuf & Process, vol. 5, no. 3, 2023, ISSN: 2637-403X.
Abstract | Links | BibTeX | Tags:
@article{Abdul‐Majeed2023,
title = {Evaluation of two plumes jet plasma reactor for plasmolysis of H_{2}O vapor and CO_{2} combinations – Optimization study},
author = {Wameath S. Abdul‐Majeed and Qazi Nasir and Muzna H. Alajmi and Khaloud A. Almaqbali},
doi = {10.1002/amp2.10154},
issn = {2637-403X},
year = {2023},
date = {2023-07-00},
journal = {J Adv Manuf & Process},
volume = {5},
number = {3},
publisher = {Wiley},
abstract = {Abstract A custom design multi‐flying jet plasma torches (MFJPT) reactor was tested for plasmolysis of water vapor and mixtures of water vapor‐carbon dioxide in a series of experimental investigations at various reactor operational parameters. Experimentation plans were applied within the range of induced power (100–300 watts) and various vapor/gas throughputs. The produced gases were analyzed through online gas chromatography. The results of water vapor plasmolysis in two schemes demonstrated the production of 1337 ppm of hydrogen from water vapor/argon and 1665 ppm from applying a water vapor/argon/CO2 combination. Valuable hydrocarbon gases (e.g., Ethane, Ethylene/Acetylene) were generated and detected at higher conversions upon introducing H2 O vapor, argon, and CO2 mixtures. The experimental data were trained through machine learning and a Gaussian Process Regression (GPR) model has fitted the data quite well. Ultimately, optimization study outcomes are presented through a color heat‐map for system scaling‐up purposes. },
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Ahmad, Anwar; Ghufran, Roomana; Nasir, Qazi; Shahitha, Fathima; Al-Sibani, Mohammed; Al-Rahbi, Amal S.
Enhanced anaerobic co-digestion of food waste and solid poultry slaughterhouse waste using fixed bed digester: Performance and energy recovery Journal Article
In: Environmental Technology & Innovation, vol. 30, 2023, ISSN: 2352-1864.
@article{Ahmad2023,
title = {Enhanced anaerobic co-digestion of food waste and solid poultry slaughterhouse waste using fixed bed digester: Performance and energy recovery},
author = {Anwar Ahmad and Roomana Ghufran and Qazi Nasir and Fathima Shahitha and Mohammed Al-Sibani and Amal S. Al-Rahbi},
doi = {10.1016/j.eti.2023.103099},
issn = {2352-1864},
year = {2023},
date = {2023-05-00},
journal = {Environmental Technology & Innovation},
volume = {30},
publisher = {Elsevier BV},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Imai, Bruno; Nasir, Qazi; Maulud, Abdulhalim Shah; Nawaz, Muhammad; Nasir, Rizwan; Suleman, Humbul
Neural network-based correlation and statistical identification of data outliers in H2S-alkanolamine-H2O and CO2-alkanolamine-H2O datasets Journal Article
In: Neural Comput & Applic, vol. 35, no. 4, pp. 3395–3412, 2023, ISSN: 1433-3058.
@article{Imai2022,
title = {Neural network-based correlation and statistical identification of data outliers in H2S-alkanolamine-H2O and CO2-alkanolamine-H2O datasets},
author = {Bruno Imai and Qazi Nasir and Abdulhalim Shah Maulud and Muhammad Nawaz and Rizwan Nasir and Humbul Suleman},
doi = {10.1007/s00521-022-07904-z},
issn = {1433-3058},
year = {2023},
date = {2023-02-00},
journal = {Neural Comput & Applic},
volume = {35},
number = {4},
pages = {3395--3412},
publisher = {Springer Science and Business Media LLC},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
2022
Nasir, Qazi; Suleman, Humbul; Din, Israf Ud; Elfadol, Yasir Elsheikh
A multi-layer perceptron neural network model for predicting the hydrate equilibrium conditions in multi-component hydrocarbon systems Journal Article
In: Neural Comput & Applic, vol. 34, no. 18, pp. 15863–15887, 2022, ISSN: 1433-3058.
@article{Nasir2022,
title = {A multi-layer perceptron neural network model for predicting the hydrate equilibrium conditions in multi-component hydrocarbon systems},
author = {Qazi Nasir and Humbul Suleman and Israf Ud Din and Yasir Elsheikh Elfadol},
doi = {10.1007/s00521-022-07284-4},
issn = {1433-3058},
year = {2022},
date = {2022-09-00},
journal = {Neural Comput & Applic},
volume = {34},
number = {18},
pages = {15863--15887},
publisher = {Springer Science and Business Media LLC},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Din, Israf Ud; Nasir, Qazi; Garba, Mustapha D.; Alharthi, Abdulrahman I.; Alotaibi, Mshari A.; Usman, Muhammad
A Review of Preparation Methods for Heterogeneous Catalysts Journal Article
In: MROC, vol. 19, no. 1, pp. 92–110, 2022, ISSN: 1570-193X.
Abstract | Links | BibTeX | Tags:
@article{IsrafUdDin2022,
title = {A Review of Preparation Methods for Heterogeneous Catalysts},
author = { Israf Ud Din and Qazi Nasir and Mustapha D. Garba and Abdulrahman I. Alharthi and Mshari A. Alotaibi and Muhammad Usman},
doi = {10.2174/1570193x18666210308151136},
issn = {1570-193X},
year = {2022},
date = {2022-02-00},
journal = {MROC},
volume = {19},
number = {1},
pages = {92--110},
publisher = {Bentham Science Publishers Ltd.},
abstract = {: Catalysts contribute significantly to the industrial revolution in terms of reaction rates and reduction in production costs. Extensive research has been documented on various industrial catalysis in the last few decades. The performance of catalysts is influenced by many parameters, including synthesis methods. The current work overviews the most common methods applied for the synthesis of supported catalysts. This review presents the detailed background, principles, and mechanism of each preparation method. The advantages and limitations of each method have also been elaborated in detail. In addition, the applications of each method in terms of catalyst synthesis have been documented in the present review paper. },
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Qazi Nasir Israf Ud Din, Mustapha D Garba
A review of preparation methods for heterogeneous catalysts Journal Article
In: Mini-Reviews in Organic Chemistry, vol. 19, iss. 1, pp. 92-110, 2022.
@article{nokey,
title = {A review of preparation methods for heterogeneous catalysts},
author = {Israf Ud Din, Qazi Nasir, Mustapha D Garba, Abdulrahman I Alharthi, Mshari A Alotaibi, Muhammad Usman},
year = {2022},
date = {2022-01-01},
journal = {Mini-Reviews in Organic Chemistry},
volume = {19},
issue = {1},
pages = {92-110},
abstract = {Catalysts contribute significantly to the industrial revolution in terms of reaction rates and reduction in production costs. Extensive research has been documented on various industrial catalysis in the last few decades. The performance of catalysts is influenced by many parameters, including synthesis methods. The current work overviews the most common methods applied for the synthesis of supported catalysts. This review presents the detailed background, principles, and mechanism of each preparation method. The advantages and limitations of each method have also been elaborated in detail. In addition, the applications of each method in terms of catalyst synthesis have been documented in the present review paper.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
2021
Suleman, Humbul; Maulud, Abdulhalim Shah; Fosbøl, Philip Loldrup; Nasir, Qazi; Nasir, Rizwan; Shahid, Muhammad Zubair; Nawaz, Muhammad; Abunowara, Mustafa
A review of semi-empirical equilibrium models for CO2-alkanolamine-H2O solutions and their mixtures at high pressure Journal Article
In: Journal of Environmental Chemical Engineering, vol. 9, no. 1, 2021, ISSN: 2213-3437.
@article{Suleman2021,
title = {A review of semi-empirical equilibrium models for CO2-alkanolamine-H2O solutions and their mixtures at high pressure},
author = {Humbul Suleman and Abdulhalim Shah Maulud and Philip Loldrup Fosbøl and Qazi Nasir and Rizwan Nasir and Muhammad Zubair Shahid and Muhammad Nawaz and Mustafa Abunowara},
doi = {10.1016/j.jece.2020.104713},
issn = {2213-3437},
year = {2021},
date = {2021-02-00},
journal = {Journal of Environmental Chemical Engineering},
volume = {9},
number = {1},
publisher = {Elsevier BV},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
2020
Elsheikh, Yasir A.; Elfghi, Fawzi; Nasir, Qazi; Muhammad, Nawshad
Effect of pyrazolium ionic liquid halide content on in-situ transesterification of Castor Bean (Ricinus Communis L.) seeds Journal Article
In: Process Safety and Environmental Protection, vol. 140, pp. 273–282, 2020, ISSN: 0957-5820.
@article{Elsheikh2020,
title = {Effect of pyrazolium ionic liquid halide content on in-situ transesterification of Castor Bean (Ricinus Communis L.) seeds},
author = {Yasir A. Elsheikh and Fawzi Elfghi and Qazi Nasir and Nawshad Muhammad},
doi = {10.1016/j.psep.2020.05.014},
issn = {0957-5820},
year = {2020},
date = {2020-08-00},
journal = {Process Safety and Environmental Protection},
volume = {140},
pages = {273--282},
publisher = {Elsevier BV},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Din, Israf Ud; Shaharun, Maizatul S.; Naeem, A.; Alotaibi, Mshari A.; Alharthi, Abdulrahman I.; Bakht, M. Afroz; Nasir, Qazi
Carbon nanofibers as potential materials for catalysts support, a mini-review on recent advances and future perspective Journal Article
In: Ceramics International, vol. 46, no. 11, pp. 18446–18452, 2020, ISSN: 0272-8842.
@article{Din2020,
title = {Carbon nanofibers as potential materials for catalysts support, a mini-review on recent advances and future perspective},
author = {Israf Ud Din and Maizatul S. Shaharun and A. Naeem and Mshari A. Alotaibi and Abdulrahman I. Alharthi and M. Afroz Bakht and Qazi Nasir},
doi = {10.1016/j.ceramint.2020.04.275},
issn = {0272-8842},
year = {2020},
date = {2020-08-00},
journal = {Ceramics International},
volume = {46},
number = {11},
pages = {18446--18452},
publisher = {Elsevier BV},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Din, Israf Ud; Shaharun, Maizatul S.; Naeem, Abdul; Alotaibi, Mshari A.; Alharthi, Abdulrahman I.; Nasir, Qazi
CO2 Conversion to Methanol over Novel Carbon Nanofiber-Based Cu/ZrO2 Catalysts—A Kinetics Study Journal Article
In: Catalysts, vol. 10, no. 5, 2020, ISSN: 2073-4344.
Abstract | Links | BibTeX | Tags:
@article{Din2020b,
title = {CO2 Conversion to Methanol over Novel Carbon Nanofiber-Based Cu/ZrO2 Catalysts—A Kinetics Study},
author = {Israf Ud Din and Maizatul S. Shaharun and Abdul Naeem and Mshari A. Alotaibi and Abdulrahman I. Alharthi and Qazi Nasir},
doi = {10.3390/catal10050567},
issn = {2073-4344},
year = {2020},
date = {2020-05-00},
journal = {Catalysts},
volume = {10},
number = {5},
publisher = {MDPI AG},
abstract = {Ongoing industrialization has deteriorated the global environment. Global warming is a human-induced issue affecting the environment. The alarming increase in CO2 emissions is among the major contributors to global warming. The conversion of CO2 to methanol is an economically viable and environmentally friendly solution to mitigate its concentration. Here, hydrogenation of CO2 was studied over carbon nanofiber-based Cu/ZrO2 catalysts. Kinetics investigations were carried out for the reaction. Overall, kinetics data indicated that CO2 conversion follows a pseudo-first-order reaction. The kinetics studies were further modeled by using an artificial neural network, which supported the experimental kinetics study. },
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Humbul Suleman Qazi Nasir, Yasir A Elsheikh
A review on the role and impact of various additives as promoters/inhibitors for gas hydrate formation Journal Article
In: Journal of Natural Gas Science and Engineering, vol. 76, pp. 103211, 2020.
@article{nokey,
title = {A review on the role and impact of various additives as promoters/inhibitors for gas hydrate formation},
author = {Qazi Nasir, Humbul Suleman, Yasir A Elsheikh},
year = {2020},
date = {2020-04-01},
journal = {Journal of Natural Gas Science and Engineering},
volume = {76},
pages = {103211},
abstract = {Formerly, additives were only used to inhibit the formation of solid hydrates in pipelines and maintain a safe and economic fuel transportation. Recently, their role has reversed in newly found applications, where formation of gas hydrates is beneficial like, gas storage and carbon sequestration. A comprehensive review on the role of conventional and novel additives used to promote or inhibit the hydrate formation in different chemical processes is presented. These additives are classified based on their action mechanism i.e. thermodynamic and kinetic. The study aims to provide a complete outlook of chronological development with a special focus on the major issues, challenges, and future prospects/development of the different classes of additives in a promoter/inhibitor role.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Nasir, Qazi; Suleman, Humbul; Elsheikh, Yasir A.
A review on the role and impact of various additives as promoters/ inhibitors for gas hydrate formation Journal Article
In: Journal of Natural Gas Science and Engineering, vol. 76, 2020, ISSN: 1875-5100.
@article{Nasir2020,
title = {A review on the role and impact of various additives as promoters/ inhibitors for gas hydrate formation},
author = {Qazi Nasir and Humbul Suleman and Yasir A. Elsheikh},
doi = {10.1016/j.jngse.2020.103211},
issn = {1875-5100},
year = {2020},
date = {2020-04-00},
journal = {Journal of Natural Gas Science and Engineering},
volume = {76},
publisher = {Elsevier BV},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Din, Israf Ud; Shaharun, Maizatul S.; Naeem, A.; Alotaibi, Mshari A.; Alharthi, Abdulrahman I.; Nasir, Qazi
Effect of reaction conditions on the activity of novel carbon nanofiber-based Cu/ZrO2 catalysts for CO2 hydrogenation to methanol Journal Article
In: vol. 23, no. 1, pp. 57–61, 2020, ISSN: 1878-1543.
Abstract | Links | BibTeX | Tags:
@article{Din2020c,
title = {Effect of reaction conditions on the activity of novel carbon nanofiber-based Cu/ZrO2 catalysts for CO2 hydrogenation to methanol},
author = {Israf Ud Din and Maizatul S. Shaharun and A. Naeem and Mshari A. Alotaibi and Abdulrahman I. Alharthi and Qazi Nasir},
doi = {10.5802/crchim.6},
issn = {1878-1543},
year = {2020},
date = {2020-00-00},
volume = {23},
number = {1},
pages = {57--61},
publisher = {MathDoc/Centre Mersenne},
abstract = {
The increasing concentrations of CO
2
in the environment result in catastrophic phenomena like global warming. Hydrogenation of emitted CO
2
to methanol is one of the economically viable strategies to tackle the problem. In the current work, methanol synthesis by CO
2
hydrogenation was studied over carbon nanofiber-based Cu/ZrO
2
catalysts. The effect on rate of reaction by varying reaction temperature, reaction pressure, and feed gas ratio were investigated. Rate of reaction increased with increasing temperature and 220 °C was found as an optimum reaction temperature. The study revealed a linear relationship between the rate of reaction and applied pressure of the feed gases. The rate of reaction was accelerated by increasing feed gas ratio and the highest activity was recorded for H
2
/CO
2
=
3
.
},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The increasing concentrations of CO
in the environment result in catastrophic phenomena like global warming. Hydrogenation of emitted CO
to methanol is one of the economically viable strategies to tackle the problem. In the current work, methanol synthesis by CO
hydrogenation was studied over carbon nanofiber-based Cu/ZrO
catalysts. The effect on rate of reaction by varying reaction temperature, reaction pressure, and feed gas ratio were investigated. Rate of reaction increased with increasing temperature and 220 °C was found as an optimum reaction temperature. The study revealed a linear relationship between the rate of reaction and applied pressure of the feed gases. The rate of reaction was accelerated by increasing feed gas ratio and the highest activity was recorded for H
/CO
.
2016
Din, Israf Ud; Tasleem, S.; Naeem, A.; Shaharun, Maizatul S.; Nasir, Qazi
Study of Annealing Conditions on Particle Size of Nickel Ferrite Nanoparticles Synthesized by Wet Chemical Route Journal Article
In: Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry, vol. 46, no. 3, pp. 405–408, 2016, ISSN: 1553-3182.
@article{Din2015,
title = {Study of Annealing Conditions on Particle Size of Nickel Ferrite Nanoparticles Synthesized by Wet Chemical Route},
author = {Israf Ud Din and S. Tasleem and A. Naeem and Maizatul S. Shaharun and Qazi Nasir},
doi = {10.1080/15533174.2014.988226},
issn = {1553-3182},
year = {2016},
date = {2016-03-03},
journal = {Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry},
volume = {46},
number = {3},
pages = {405--408},
publisher = {Informa UK Limited},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Nasir, Qazi; Lal, Bhajan; Keong, Lau Kok
The Presence of Additive Mixtures (THF/SDS) on Carbon Dioxide Rich Gas Mixture Hydrate Formation and Dissociation Conditions Journal Article
In: AMR, vol. 1133, pp. 639–643, 2016, ISSN: 1662-8985.
Abstract | Links | BibTeX | Tags:
@article{Nasir2016,
title = {The Presence of Additive Mixtures (THF/SDS) on Carbon Dioxide Rich Gas Mixture Hydrate Formation and Dissociation Conditions},
author = {Qazi Nasir and Bhajan Lal and Lau Kok Keong},
doi = {10.4028/www.scientific.net/amr.1133.639},
issn = {1662-8985},
year = {2016},
date = {2016-01-04},
journal = {AMR},
volume = {1133},
pages = {639--643},
publisher = {Trans Tech Publications, Ltd.},
abstract = {Besides other application of clathrate hydrates, hydrate-based CO2 capture and storage are potentially important where additives are commonly used to speed up the hydrate formation processes in order to gain on scientific, technological and economic interest. In this work combination of additives such as tetrahydrofuran and sodium dodecyl sulphate (THF/SDS) on mixed gas hydrate formation and dissociation condition have been investigated using a graphical method. The measurements were carried out at temperature and pressure range of (265 to 300) K and (1 to 5) MPa. The presence of additive 3 mol % THF has drastically increased in the hydrate stability region while with the combination of SDS + THF lower the hydrate equilibrium temperature marginally. },
keywords = {},
pubstate = {published},
tppubtype = {article}
}
2015
Nasir, Qazi; Sabil, Khalik M.; Lau, K. K.
In: Journal of Natural Gas Science and Engineering, vol. 27, pp. 158–167, 2015, ISSN: 1875-5100.
@article{Nasir2015,
title = {Measurement of isothermal (vapor + liquid) equilibria, (VLE) for binary (CH 4 + CO 2 ) from T = (240.35 to 293.15) K and CO 2 rich synthetic natural gas systems from T = (248.15 to 279.15) K},
author = {Qazi Nasir and Khalik M. Sabil and K.K. Lau},
doi = {10.1016/j.jngse.2015.08.045},
issn = {1875-5100},
year = {2015},
date = {2015-11-00},
journal = {Journal of Natural Gas Science and Engineering},
volume = {27},
pages = {158--167},
publisher = {Elsevier BV},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
2014
Sabil, Khalik M.; Nasir, Qazi; Partoon, Bezhad; Seman, Akbar A.
Measurement of H–LW–V and Dissociation Enthalpy of Carbon Dioxide Rich Synthetic Natural Gas Mixtures Journal Article
In: J. Chem. Eng. Data, vol. 59, no. 11, pp. 3502–3509, 2014, ISSN: 1520-5134.
@article{Sabil2014,
title = {Measurement of H–L_{W}–V and Dissociation Enthalpy of Carbon Dioxide Rich Synthetic Natural Gas Mixtures},
author = {Khalik M. Sabil and Qazi Nasir and Bezhad Partoon and Akbar A. Seman},
doi = {10.1021/je500453j},
issn = {1520-5134},
year = {2014},
date = {2014-11-13},
journal = {J. Chem. Eng. Data},
volume = {59},
number = {11},
pages = {3502--3509},
publisher = {American Chemical Society (ACS)},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Nasir, Qazi; Lau, K. K.; Lal, Bhajan; Sabil, Khalik M.
In: J. Chem. Eng. Data, vol. 59, no. 11, pp. 3920–3926, 2014, ISSN: 1520-5134.
@article{Nasir2014,
title = {Hydrate Dissociation Condition Measurement of CO_{2}-Rich Mixed Gas in the Presence of Methanol/Ethylene Glycol and Mixed Methanol/Ethylene Glycol + Electrolyte Aqueous Solution},
author = {Qazi Nasir and K. K. Lau and Bhajan Lal and Khalik M. Sabil},
doi = {10.1021/je5008313},
issn = {1520-5134},
year = {2014},
date = {2014-11-13},
journal = {J. Chem. Eng. Data},
volume = {59},
number = {11},
pages = {3920--3926},
publisher = {American Chemical Society (ACS)},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Nasir, Qazi; Sabil, Khalik M.; Partoon, Bezhad
CO2 Rich Gas Mixture Hydrate-Liquid Water-Vapor (H-Lw-V) Equilibrium Measurement and Prediction Journal Article
In: AMM, vol. 625, pp. 386–389, 2014, ISSN: 1662-7482.
Abstract | Links | BibTeX | Tags:
@article{Nasir2014b,
title = {CO_{2} Rich Gas Mixture Hydrate-Liquid Water-Vapor (H-Lw-V) Equilibrium Measurement and Prediction},
author = {Qazi Nasir and Khalik M. Sabil and Bezhad Partoon},
doi = {10.4028/www.scientific.net/amm.625.386},
issn = {1662-7482},
year = {2014},
date = {2014-09-12},
journal = {AMM},
volume = {625},
pages = {386--389},
publisher = {Trans Tech Publications, Ltd.},
abstract = {In this paper we present experimental hydrate-liquid water vapor equilibrium data for mixtures of gas comprising rich CO2 content. Data were generated by a reliable step-heating technique validated using measured data for CH4 . The experimental results obtained in this measurement were compared with various commercial softwares (CSMGem, CSMHYD). The prediction results obtained with different software packages shows in weak agreement with experiment data point with high average absolute error (AAE) of 1.18 and 1.45 for hydrate equilibrium pressure condition while with model used in this work the average absolute error obtained is 0.01 respectively. },
keywords = {},
pubstate = {published},
tppubtype = {article}
}