Article
Chemistry, Physical
Shiqing Jin, Didi Li, Zhen Wang, Yiming Wang, Li Sun, Minghui Zhu
Summary: Cu/CeO2 catalysts prepared by a deposition-precipitation method with various loadings were investigated using in situ characterization techniques. The catalyst surface contains metallic Cu-0 and interfacial sites, with the latter being the key active sites for the methanol steam reforming reaction. Furthermore, the structures of both sites change dynamically in response to different environmental conditions.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Multidisciplinary Sciences
Anahita Mortazavi-Manesh, Nasser Safari, Farzad Bahadoran, Yasin Khani
Summary: In this study, Cu/perovskite-type structures of the general formula Cu/Ca(ZrxTi1-x)O3 (x = 1, 0.8, 0.6) were synthesized via sol-gel process and wetness impregnation method. The physicochemical properties of the catalysts were analyzed using various techniques. The catalysts showed high activity, selectivity, and sustainability, with significant improvement in catalytic activity due to the morphological features of the synthesized Cu/perovskite-type porous structures. Notably, the prepared Cu/Ca(Zr0.6Ti0.4)O3 catalyst exhibited remarkable activity in methanol steam reforming.
Article
Chemistry, Physical
Esteban L. Fornero, Julia Vecchietti, Manuela Boucinha Rodrigues, Juan C. Hernandez-Garcido, Adrian L. Bonivardi
Summary: The performance of gallium promoted cobalt-ceria catalysts for ethanol steam reforming was studied. Gallium promoted catalyst showed higher conversion efficiency of ethanol and production of oxygenated by-products compared to cobalt-ceria catalyst. The role and mechanism of gallium promotion were analyzed and explained through detailed characterization and analysis of the catalyst.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Materials Science, Ceramics
Zicheng Shao, Qiuwan Shen, Haoran Ding, Yaowei Jiang, Shian Li, Guogang Yang
Summary: In this study, a series of SrCo1-xCuxO3-delta catalysts were synthesized and characterized. The results revealed that the doping of cobalt and copper, as well as the reaction conditions, have an impact on the catalyst performance. Among the catalysts tested, SrC0.08Cu0.2O3-delta exhibited the highest hydrogen production rate in the MSR process. Additionally, the porous structure, small particle size, and rough surface of the catalyst also contributed to the improved catalytic performance.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Applied
M. Angeles Stegmayer, Silvia Irusta, Eduardo E. Miro, Viviana G. Milt
Summary: Co, Ce and Co-Ce nanofibers were synthesized by electrospinning method and applied to gas-solid and solid-solid-gas reactions. Different activity trends were observed in CO oxidation and combustion of diesel soot, with Co-Ce nanofibers showing the highest activity for soot combustion and Co exhibiting the highest activity for CO oxidation. The temperature range for maximum combustion rate was narrow for soot combustion and wider for CO oxidation. The high activity for soot oxidation was attributed to multiple contact points between fibers and soot particles, while the trend observed for CO oxidation was related to the higher redox capacity of Co.
Article
Energy & Fuels
Yancheng Wang, Qiong Wu, Deqing Mei, Yidong Wang
Summary: A new methanol fuel processing system (MFPS) has been developed to produce CO-free hydrogen rich steam for the supply of PEMFC, generating approximately 100 watts of electricity successfully.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Physical
Yue Chen, Yongmin Huang
Summary: Methanol steam reforming (MSR) shows promise in hydrogen production. Cu-SBA-15 and Cu-Ce/SBA-15-I catalysts have poor selectivity due to slow steam activation, while small Cu0 tends to sinter. Modifying SBA-15 with Ce ion exchange can prevent sintering and improve catalytic performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Jimin Zhu, Xiaoti Cui, Samuel Simon Araya
Summary: This study conducts a numerical simulation of methanol steam reforming reactions in a commercial packed-bed reactor with CuO/ZnO/Al2O3 catalyst. The results show that the inlet temperature of burner gas and tube diameter have significant effects on the temperature distribution and the formation of hot spots in the reformer tubes.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Yu Ri Jeong, Hyeonjung Jung, Jongkyu Kang, Jeong Woo Han, Eun Duck Park
Summary: This Letter reports the continuous direct conversion of methane into methanol using Cu(II)-exchanged mordenite under mild conditions. The methanol production rate was influenced by factors such as the Si/Al ratio, Cu/Al ratio, presence of Bronsted acid sites, and O-2 concentration in the feed.
Article
Chemistry, Physical
Qiang Wang, Guiru Zhang, Jiali Zhao, Li Zhang, Qi Zhang
Summary: This paper presents the preparation and performance comparison of a mesh-type structured catalyst in a plate microreactor, showing that although the catalyst has lower intrinsic activity, it exhibits higher methanol conversion, higher hydrogen production capacity, and shorter start-up time. Furthermore, the catalyst demonstrates excellent stability in a 160-hour test.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
M. R. Kosinski, A. J. Vizcaino, L. M. Gomez-Sainero, A. Carrero, R. T. Baker
Summary: Catalysts of 2 wt% Pd/Sm-doped Ceria were prepared and evaluated for hydrogen production by methanol reforming. Among the three preparation methods, Method B resulted in the best activity and CO2 selectivity due to the superior nanostructure of the catalysts.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Multidisciplinary
Qijie Jin, Xuelu Meng, Peng Wu, Yunhe Li, Mutao Xu, Ranran Zhou, Mengfei Yang, Haitao Xu
Summary: Steam reforming using NiTiO3 catalysts with a hierarchical porous structure is studied for methanol steam reforming and hydrogen production. The optimal catalyst (10% Ni-Ti-O-x) has a hierarchical porous structure and contains NiTiO3, anatase TiO2, and rutile TiO2. NiTiO3 promotes the adsorption and activation of methanol molecules, and the main intermediate species in the methanol reaction are hydroxyl groups, methoxy species, and formic acid species. Methanol steam reforming is dominated by methanol decomposition at low temperatures (350-500 degrees C), and by methanol and water molecular reactions at high temperatures (500-600 degrees C).
Article
Chemistry, Multidisciplinary
Luning Chen, Zhiyuan Qi, Xinxing Peng, Jeng-Lung Chen, Chih-Wen Pao, Xibo Zhang, Chaochao Dun, Melissa Young, David Prendergast, Jeffrey J. Urban, Jinghua Guo, Gabor A. Somorjai, Ji Su
Summary: This study demonstrates how the synergy between noble metal single sites and oxygen vacancies enhances hydrogen generation efficiency and CO2 selectivity in methanol steam reforming reactions. It lays the foundation for the rational design of single site catalysts at the atomic scale and the development of highly efficient and selective hydrogen evolution systems.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Applied
Haochen Zhan, Shuming Li, Geyuan Yin, Yibo Gao, Erjiang Hu, Zuohua Huang
Summary: This study validated the methanol model and investigated the effects of syngas substitution on methanol syngas co-oxidation. Experimental results showed that high pressure slightly promoted methanol pyrolysis but inhibited methanol oxidation. The effects of syngas substitution can be divided into dilution and chemical effects.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Chemistry, Physical
Yelisbeth Escalante, Manuel F. Gomez, Mariana N. Barroso
Summary: Co-CeO2/MgAl2O4 catalysts were synthesized with different impregnation orders of Co and Ce, and their performance in the ethanol steam reforming (ESR) reaction was evaluated. The impregnation order affected the interactions between metal-metal and/or metal-support, as well as the surface molar ratio of Co0/Con+, Ce3+/Ce4+, and Co/Ce, which in turn influenced the catalytic behavior in the ESR reaction.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Nga T. T. Tran, Yoshimitsu Uemura, Sujan Chowdhury, Anita Ramli
APPLIED CATALYSIS A-GENERAL
(2016)
Article
Green & Sustainable Science & Technology
Muhammad Zulfiqar, Sujan Chowdhury, Suriati Sufian, Abdul Aziz Omar
JOURNAL OF CLEANER PRODUCTION
(2018)
Article
Engineering, Chemical
Suleiman Akilu, Aklilu Tesfamichael Baheta, Sujan Chowdhury, Eswaran Padmanabhan, K. V. Sharma
Article
Environmental Sciences
Muhammad Zulfiqar, Sujan Chowdhury, Abdul Aziz Omar, Ahmer Ali Siyal, Suriati Sufian
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2020)
Article
Food Science & Technology
Sujan Chowdhury, Yen Lynn Teoh, Kar Mang Ong, Nur Syaliani Rafflisman Zaidi, Shee-Keat Mah
FOOD PACKAGING AND SHELF LIFE
(2020)
Article
Engineering, Environmental
Muhammad Zulfiqar, Sujan Chowdhury, Mohammad Fakhrul Ridhwan Samsudin, Ahmer Ali Siyal, Abdul Aziz Omar, Tausif Ahmad, Suriati Sufian
JOURNAL OF WATER PROCESS ENGINEERING
(2020)
Article
Materials Science, Multidisciplinary
Mohammad Muzibur Rahman, Md Mahmud Alam, Abdullah Mohamed Asiri, Sujan Chowdhury, Raja Saad Alruwais
Summary: In this study, the authors developed a method for measuring citric acid in fruit juices using a GCE modified with ZnO/CuO nanocomposites. DPV and CV electrochemical techniques were utilized to analyze the citric acid. The prepared ZnO/CuO nanocomposites were characterized in detail, and the sensor parameters were calculated. The results showed that the proposed sensor had good reproducibility, long-time stability, and response time, making it a promising tool for the analysis of fruit samples.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Proceedings Paper
Engineering, Mechanical
Muhammad Zulfiqar, Abdul Aziz Omar, Sujan Chowdhury
PROCESS AND ADVANCED MATERIALS ENGINEERING
(2014)
Proceedings Paper
Engineering, Mechanical
Duvvuri Subbarao, Noor Asmawati Mohd. Zabidi, Sujan Chowdhury, Mohd. Azmi Bustam-Khalil, Mohammad Ibrahim Abdullah Mutalib
PROCESS AND ADVANCED MATERIALS ENGINEERING
(2014)
Proceedings Paper
Engineering, Mechanical
Taslima Khanam, Ahmad Rashedi, Sujan Chowdhury, Anand K. Asundi
PROCESS AND ADVANCED MATERIALS ENGINEERING
(2014)
Proceedings Paper
Engineering, Mechanical
Nor Hazwani Amir Hamzah, Sujan Chowdhury, Suriati Sufian, Abdul Aziz Omar, Abrar Inayat
PROCESS AND ADVANCED MATERIALS ENGINEERING
(2014)
Proceedings Paper
Engineering, Mechanical
Anirban Chakraborty, Muhammad Moniruzzaman, Sujan Chowdhury, Sekhar Bhattacharjee
PROCESS AND ADVANCED MATERIALS ENGINEERING
(2014)
Proceedings Paper
Engineering, Mechanical
Sujan Chowdhury, Tan Wei Leng, Iqbal Ahmed, Azmi Bustam, Azmi M. Shariff
PROCESS AND ADVANCED MATERIALS ENGINEERING
(2014)
Proceedings Paper
Engineering, Mechanical
Mohd Aliff Irham Md Azhar, Sujan Chowdhury, Pradip Chandra Mandal, Muhd Fahmi Daman, Sekhar Bhattacharjee, Taslima Khanam
PROCESS AND ADVANCED MATERIALS ENGINEERING
(2014)
Proceedings Paper
Engineering, Multidisciplinary
Bawadi Abdullah, Dai-Viet N. Vo, Sujan Chowdhury
PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON PROCESS ENGINEERING AND ADVANCED MATERIALS 2012-ICPEAM 2012
(2014)