Article
Chemistry, Applied
Saba Kazemi, Seyed Mehdi Alavi, Mehran Rezaei
Summary: A new type of spinel powder was used as a support for nickel-based catalysts in the thermal decomposition of methane to produce COx-free hydrogen. Various techniques were used to analyze the physicochemical characteristics of the samples. The results showed that the FeAl2O4-supported nickel catalyst had the highest stability and efficiency.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Energy & Fuels
Run-Ping Ye, Lin Liao, Tomas Ramirez Reina, Jiaxu Liu, Durgaiah Chevella, Yonggang Jin, Maohong Fan, Jian Liu
Summary: The study introduces an improved sol-gel method for loading Ni-MOF onto a silica support to create a Ni/SiO2 catalyst. The catalyst demonstrates excellent catalytic performance under low temperature and high GHSV conditions, with high CO2 conversion and CH4 selectivity. This work provides a groundbreaking strategy for loading MOF derived catalysts and may offer insights for preparing highly dispersed Ni/SiO2 catalysts.
Article
Chemistry, Physical
Fahriye Donmez, Nezihe Ayas
Summary: In this study, Ni/TiO2 catalysts were synthesized using the sol-gel technique and characterized through various methods, while the effects of different factors on hydrogen production performance were investigated. It was found that high hydrogen yield and production rate could be achieved under specific reaction conditions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Qianqian Chen, Aik Chong Lua
Summary: The study demonstrated the feasibility of using the electroless nickel plating technique for the preparation of catalysts for catalytic methane decomposition. The Ni/SBA-15 catalyst exhibited good catalytic performance, high stability, and resistance to deactivation, with the catalyst loading and reaction temperature being key factors affecting performance.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Physical
Yingqiu Gu, Yinglan Ma, Zhouyang Long, Shuang Zhao, Ying Wang, Weichao Zhang
Summary: Nickel based catalysts supported on porous alumina matrix with small size Ni particles exhibit excellent catalytic performance for ammonia decomposition, achieving high ammonia conversion rates and hydrogen formation rates. The structural characteristics of uniform-sized small Ni particles highly dispersed into the porous alumina matrix contribute to the enhanced catalytic activity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Richard J. Lewis, Kenji Ueura, Yukimasa Fukuta, Thomas E. Davies, David J. Morgan, Charlie B. Paris, James Singleton, Jennifer K. Edwards, Simon J. Freakley, Yasushi Yamamoto, Graham J. Hutchings
Summary: In this study, the efficacy of a composite catalyst consisting of precious metal nanoparticles supported on a commercial TS-1 was demonstrated for the in situ synthesis of cyclohexanone oxime. The improved catalytic activity of the optimized catalysts was attributed to the disruption of contiguous Pd ensembles and the modification of Pd oxidation states.
Article
Chemistry, Physical
Chenqi Zhang, Yuyue Gao, Jun Zhang, Yujiang Chen, Quan Zhu, Yi Jiao, Jianli Wang, Yaoqiang Chen, Xiangyuan Li
Summary: In this study, different preparation methods were used to optimize the dispersion and stability of Ni in SiO2 supported Ni-La2O3 catalysts. Methylcyclohexane steam reforming was used to evaluate their catalytic behaviors. The catalyst prepared by sol-gel method showed larger pore structure, higher dispersion of Ni nanoparticles, smaller particle size, and strong interaction between metal and support. It exhibited excellent catalytic performance in both activity and stability tests.
JOURNAL OF POWER SOURCES
(2023)
Article
Energy & Fuels
Fatemeh Zarei-Jelyani, Fatemeh Salahi, Mohammad Farsi, Mohammad Reza Rahimpour
Summary: Steam methane reforming is an important reaction for producing environmentally-friendly hydrogen from methane. In this study, Ni-Co co-impregnated catalysts were synthesized using a hollow sphere alumina support, leading to improved stability and performance. Among the catalysts tested, Ni-2-Co-1/H-Al2O3 showed the highest methane conversion and hydrogen yield at 700 ℃.
Article
Chemistry, Applied
Leticia C. Romero, M. Sergio Moreno, Agustin E. Galetti, Mariana N. Barroso
Summary: Ni-Co catalysts supported on MgAl2O4-CeO2 were prepared by the sol-gel method, and the effect of cobalt content on the catalyst performance was investigated. The results showed that the best catalytic activity, stability, and tolerance to carbon deposition were achieved in the sample with 3 wt% Co and 8 wt% Ni.
TOPICS IN CATALYSIS
(2022)
Article
Chemistry, Physical
Pedro M. Araujo, Kevin M. da Costa, Fabio B. Passos
Summary: Nickel supported on perovskite supports showed high conversion and stability in the autothermal reforming of methane, especially Ni/CaTiO3 and Ni/BaTiO3. The alumina supported catalyst exhibited the highest initial conversion and selectivity, but deactivated over time.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Review
Chemistry, Physical
Shahla Karimi, Fatemeh Bibak, Fereshteh Meshkani, Ali Rastegarpanah, Jiguang Deng, Yuxi Liu, Hongxing Dai
Summary: This review focuses on the use of different promoters in controlling the deactivation of nickel-based catalysts in the thermocatalytic decomposition of methane (TCD) process and their impact on the formed carbon nanomaterials. By discussing the classification of different promoters and their mechanisms of action in detail, it provides a reference for the design of catalysts for efficient pure hydrogen production and carbon nanomaterials.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Applied
Guoru Li, Xiaoting Yu, Fengxiang Yin, Zhiping Lei, Houfu Zhang, Xiaobo He
Summary: The Co3O4 nanoparticles were densely dispersed on the BHA surface, which showed excellent performance in catalyzing ammonia decomposition. Among the synthesized catalysts, 35% Co/BHA exhibited high ammonia conversion and hydrogen production rate at 500 degrees Celsius with good catalytic stability.
Article
Energy & Fuels
Mohammad Reza Baratzadeh Pirshahid, Seyed Mehdi Alavi, Mehran Rezaei, Ehsan Akbari, Mohammad Varbar, Kousar Khosravi
Summary: This study investigated the effects of Ni/Al2O3-SiO2 catalysts with different nickel contents on the dry reforming of methane (DRM) for syngas production. The results showed that the catalyst with 15 wt% Ni exhibited the best activity and stability. Furthermore, the operational conditions and reduction temperature had an impact on the reaction results.
JOURNAL OF THE ENERGY INSTITUTE
(2023)
Article
Chemistry, Physical
Ahmed S. Al-Fatesh, Adel Abdelkader, Ahmed I. Osman, Mahmud S. Lanre, Anis H. Fakeeha, Mansour Alhoshan, Yousef M. Alanazi, Ahmed E. Awadallah, David W. Rooney
Summary: In this study, non-supported pure and mixed cobalt and iron oxide catalysts were synthesized using a simple, environmentally friendly preparation method in which water was the sole solvent. The results showed that the mixed oxide catalysts exhibit higher catalytic activity than the pure oxides, and the Fe: Co atomic ratio is the key factor in the catalytic activity of these mixed oxides. Among the catalysts tested, the 50Fe + 50Co catalyst showed the highest catalytic activity towards methane conversion, reaching about 52.6%.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Energy & Fuels
Zhourong Xiao, Peng Li, Senlin Zhang, Jianmin Gu, Desong Wang
Summary: Metal-support interactions and their interfaces play a crucial role in catalytic activity and stability. In this study, different M2O3- (M=La, Al-) supported Ni catalysts were prepared using a citric acid-assisted sol-gel method. The catalysts were systematically characterized and their catalytic performance was evaluated for hydrogen or syngas production. The results show that Ni supported on La2O3 exhibits smaller particle size, stronger metal-support interaction, and higher ethanol conversion activity and stability compared to Al2O3 support. The Ni-La2O3 catalyst also shows good activity for methane dry reforming. The superior catalytic performance can be attributed to smaller particle size, abundant metal-support interfaces, higher nickel electron densities, abundant strong basic sites, and strong metal-support interactions.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Yongfang Zhou, Zixu Wang, Ziyan Pan, Le Liu, Jingyu Xi, Xuanli Luo, Yi Shen
ADVANCED MATERIALS
(2019)
Article
Chemistry, Applied
Yaotian Peng, Yi Shen, Moyan Ge, Ziyan Pan, Weiming Chen, Bin Gong
Article
Energy & Fuels
Aik Chong Lua
BIOMASS CONVERSION AND BIOREFINERY
(2020)
Article
Chemistry, Physical
Yongfang Zhou, Yi Shen, Xuanli Luo
JOURNAL OF CATALYSIS
(2020)
Article
Engineering, Environmental
Qianqian Chen, Aik Chong Lua
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Chemistry, Physical
Yongfang Zhou, Tingting Lin, Xuanli Luo, Zhibin Yan, Jin Wu, Jianshe Wang, Yi Shen
JOURNAL OF CATALYSIS
(2020)
Article
Chemistry, Analytical
Tingting Lin, Yi Shen
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2020)
Article
Chemistry, Physical
Weiming Chen, Xuanli Luo, Sanliang Ling, Yongfang Zhou, Bihan Shen, Thomas J. A. Slater, Jesum Alves Fernandes, Tingting Lin, Jianshe Wang, Yi Shen
Article
Energy & Fuels
Qianqian Chen, Aik Chong Lua
Summary: The study demonstrated the feasibility of using the electroless nickel plating technique for the preparation of catalysts for catalytic methane decomposition. The Ni/SBA-15 catalyst exhibited good catalytic performance, high stability, and resistance to deactivation, with the catalyst loading and reaction temperature being key factors affecting performance.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Engineering, Environmental
Moyan Ge, Jiali Zhang, Zuoqi Gai, Renshui Fan, Songqing Hu, Guo Liu, Yong Cao, Xilong Du, Yi Shen
Summary: The authors synthesized high-performance magnetic Fe3O4@PS-ANTA-M2+ nanospheres for selectively immobilizing histidine-tagged proteins, demonstrating outstanding adsorption capacity and selectivity. Practical applications showed promising potential in isolating proteins from complex biological systems.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Electrochemistry
Jiali Zhang, Yi Shen
Summary: In this study, non-precious metallic nickel-copper electrocatalysts were synthesized for the oxidation of glycerol in alkaline electrolytes. The catalysts' structural features were characterized and their electrochemical activity and product selectivity were investigated, with the Cu1Ni1@ACF catalyst showing the highest selectivity of 97.4% for formic acid.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Polymer Science
Jianhua Zhu, Aik Chong Lua
Summary: Interfacial polymerization technology was utilized to immobilize silver nanoparticles on the surface of commercial PES membrane, resulting in the development of an antibacterial and antifouling ultrafiltration membrane. The membrane exhibited 100% effectiveness in killing various types of bacteria, including gram-positive and gram-negative bacteria, in marine environments. These membranes have potential applications in killing bacteria in ballast water and seawater.
JOURNAL OF POLYMER SCIENCE
(2021)
Article
Electrochemistry
Yongfang Zhou, Yi Shen, Hongying Li
Summary: The presence of metallic impurities in the electrolyte significantly influences electrocatalytic performance, with Cu2+ showing superior activity towards HMF and glycerol oxidation, and Co2+ having pronounced effects on H2O oxidation. The effects of metallic impurities are independent of electrode composition and rely solely on the pH of the electrolytes.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Yongfang Zhou, Yi Shen, Xuanli Luo
Summary: The study focuses on establishing a rigorous assessment protocol for the electrochemical conversion of HMF, revealing the effects of electrolyte pH, support material properties, electrolyte impurities, and other factors on HMF conversion.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Weiming Chen, Xuanli Luo, Thomas J. A. Slater, Yongfang Zhou, Sanliang Ling, Rui Bao, Jesum Alves Fernandes, Jianshe Wang, Yi Shen
JOURNAL OF MATERIALS CHEMISTRY A
(2020)