Article
Chemistry, Physical
Ling Li, Ajin Cheruvathur, Shouwei Zuo, Pengfei An, Fang Hou, Jian Xu, Guozhu Li, Guozhu Liu
Summary: The study reveals that the Ni-Pt/Al2O3 bimetallic catalyst exhibits the highest activity in converting liquid hydrocarbon fuels to on-site H-2 via steam reforming process, attributed to the synergistic effect between Ni-enriched surface, Nix+ species and NiPt alloy which facilitate activation and oxidation processes.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Engineering, Environmental
J. J. Torrez-Herrera, S. A. Korili, A. Gil
Summary: This study successfully synthesized platinum-nickel/lanthanum hexaaluminates catalysts and demonstrated their excellent stability and catalytic activity in the dry reforming of methane reaction. The synthesized catalysts showed high catalytic activity and good stability after 50 hours of reaction. The presence of Pt improved the resistance to coke formation of the catalysts.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Juntian Niu, Yalan Wang, Shirley E. Liland, Samuel K. Regli, Jia Yang, Kumar R. Rout, Jun Luo, Magnus Ronning, Jingyu Ran, De Chen
Summary: By introducing Pt atoms into the surface of nickel catalysts, an enhanced active and stable Ni-based catalyst for methane dry reforming reaction was synthesized. The bimetallic Pt-Ni catalysts simultaneously enhance activity, increase H2/CO ratio, and improve stability by resisting carbon deposition. Density-functional theory calculations explained the higher coke resistance of Pt-Ni catalysts compared to monometallic samples.
Review
Energy & Fuels
Shuowen Guo, Yinghui Sun, Yanbin Zhang, Chenghu Zhang, Ying Li, Jie Bai
Summary: This article provides an overview of dry reforming of methane (DRM) reaction and its application in catalysts, with a focus on the development and limitations of NiCo bimetallic catalysts. The correlation between component properties and catalytic performances, the effect of preparation methods, and the reaction mechanisms of the catalysts are discussed. The deactivation issues caused by carbon deposition and bimetallic sintering are highlighted, and the role of promoters in overcoming these issues is emphasized.
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, Physical
Ting Wang, Kai Chen, Renxian Zhou
Summary: The Pt-Pd bimetallic catalysts with atomic-level alloy structure exhibit superior catalytic performance, especially for NO and HC conversions, due to their higher dynamic oxygen storage/release capacity. The presence of H2O and CO2 has little influence on the catalytic activity of Pt0.8Pd0.2/CZL, making it a promising catalyst for emissions control.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Xuliang Zhang, Zuzana Vajglova, Paivi Maki-Arvela, Markus Peurla, Heikki Palonen, Dmitry Yu. Murzin, Svetlana A. Tungatarova, Tolkyn S. Baizhumanova, Yermek A. Aubakirov
Summary: Bimetallic Ni-Co catalysts supported on theta-Al2O3 showed higher activity and stability in dry methane reforming compared to monometallic catalysts, with smaller metal particle sizes contributing to increased initial hydrogen formation activity.
Article
Energy & Fuels
Fatemeh Zarei-Jelyani, Fatemeh Salahi, Maryam Meshksar, Mohammad Farsi, Mohammad Reza Rahimpour
Summary: This study investigates the production of hydrogen through steam methane reforming using Ce-promoted Co-Ni/Al2O3 catalysts. The response surface method is employed to analyze the effects of synthetic and operational factors on methane conversion, hydrogen yield, and H2/CO molar ratio. The optimal catalyst condition and characterization methods for the catalysts are determined.
JOURNAL OF THE ENERGY INSTITUTE
(2023)
Article
Chemistry, Applied
Pedro Nothaft Romano, Jose Faustino Souza de Carvalho Filho, Joao Monnerat Araujo Ribeiro de Almeida, Eduardo Falabella Sousa-Aguiar
Summary: A series of mono and bimetallic catalysts based on Ni, Rh, and Pd supported on different materials were evaluated for the dry reforming of methane reaction. Ni-based catalysts suffered from deactivation but could be regenerated, while Pd-based catalysts deactivated due to coke deposition. Rh-based catalysts showed remarkable activity and stability.
Article
Chemistry, Physical
Ya Pan, Liuxin Xu, Li Huang, Wenxue He, Hongmei Li, Siyu Wang, Zhixin Long, Zhihu Sun
Summary: The study employed advanced catalytic analysis techniques to reveal the structural changes of active centers in a bimetallic Pt-Co/Al2O3 catalyst during CO oxidation, identifying the surface CoO species embedded through direct Pt-O-Co interfacial bonds as active sites for O-2 activation, leading to enhanced catalytic activity.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Energy & Fuels
Mumtaj Shah, Mohammed K. Al Mesfer, Mohd Danish
Summary: In this study, the performance of 10 wt.% Co-1 wt. % Rh/TiO2 catalysts with varying textural properties were investigated for the production of hydrogen and carbon nanotubes via methane decomposition. The results showed that the texture of the TiO2 support has a significant influence on the catalytic performance, and the optimal activity and stability can be achieved by controlling the calcination temperature and phase composition of TiO2. Furthermore, the phase composition of the catalyst also affects the formation of carbon nanotubes.
Article
Engineering, Chemical
Dan Chen, Xiuzi He, Xin Chen, Zhong Wang, Xiaozhi Wang
Summary: In this study, AuAg bimetallic catalysts were prepared and the roles of Au and Ag in HCHO catalytic oxidation were investigated. It was found that the highest activity was observed for Au monometallic catalyst, and different oxidation reaction pathways were identified for Au and Ag active sites. The in-situ DRIFTS results revealed that Au active site was dominated by OH-assisted pathway, while Ag active site was dominated by Oa-assisted pathway.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Adriana S. Oliveira, Jose A. Baeza, Luisa Calvo, Miguel A. Gilarranz
Summary: This study analyzes the use of aqueous phase reforming (APR) for producing green hydrogen from starch industry wastewater. It presents the direct conversion of high molecular weight biomass polymer in the wastewater, unlike previous literature focusing on low molecular weight substrates. The potential of different starch sources and catalyst types are evaluated, with PtRu/C and Pt/C catalysts achieving the highest H-2 yield values in APR experiments with synthetic wastewater. The flexibility of APR is demonstrated, and the performance is influenced by the starch source in real wastewaters.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Xiaoxuan Duan, Jinhua Pan, Xinru Yang, Chunsheng Wan, Xingyi Lin, Dalin Li, Lilong Jiang
Summary: NieCo/Mg(Al)O alloy catalysts with different Co/Ni molar ratios were prepared from Ni-and Co-substituted Mg-Al hydrotalcite-like compounds as precursors. These catalysts showed high activity and stability in dry reforming of methane, effectively inhibiting methane decomposition and coke deposition. Alloying Ni with Co promoted CO2 adsorption/activation and the elimination of carbon species, resulting in improved coke resistance. Hydrotalcite-derived Ni-Co/Mg(Al)O catalysts exhibited better catalytic performance compared to other Ni-Co catalysts.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Environmental
Danhua Mei, Xiaoqiang Shen, Shiyun Liu, Rusen Zhou, Xuchu Yuan, Zhiqiang Rao, Yifei Sun, Zhi Fang, Xuesen Du, Ying Zhou, Xin Tu
Summary: This study achieved plasma-catalytic dry reforming of biogas using Ni-based bimetallic catalysts, which resulted in high conversion, yield and selectivity of key gas products, and high fuel production efficiency (FPE). The coupling of DBD with 10Ni3Co showed the best reaction performance, and also helped suppress carbon deposition and reduce energy costs. The use of Ni-based catalysts allowed for tuning of product distribution, favoring the generation of C3-C4 hydrocarbons and syngas. The 10Ni3Co catalyst exhibited superior performance due to factors such as higher specific surface area, improved CO2 adsorption capability, strong metal-support interactions, enhanced reducibility, and Ni-Co alloy formation.
CHEMICAL ENGINEERING JOURNAL
(2023)
