Article
Chemistry, Physical
Sujoy Bepari, Joy Jyoti Sarkar, Narayan C. Pradhan
Summary: In this study, olivine was used as a support for nickel catalyst in the steam reforming of ethanol. Among different catalysts, the 5% Ni on olivine catalyst showed the highest hydrogen yield and ethanol conversion. The catalyst activity was analyzed by varying temperature, ethanol to water molar ratio, and space-time. The optimal conditions for the ethanol steam reforming reaction were found to be 550 degrees C, an ethanol to steam molar ratio of 1:10, and a space-time of 7.94 kg cat h/kmol ethanol.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Hongrui Liu, Hongshen Li, Shizhong Li
Summary: The performance of hydrocalumite derived catalysts prepared by co-precipitation in ethanol steam reforming was investigated. It was found that the catalysts with 15 wt% nickel content exhibited the best performance, with ethanol conversion and hydrogen yield reaching 100% and 85% respectively.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Environmental
Maria Cortazar, Shuzhuang Sun, Chunfei Wu, Laura Santamaria, Leire Olazar, Enara Fernandez, Maite Artetxe, Gartzen Lopez, Martin Olazar
Summary: The study showed that temperature significantly impacts the performance of the catalyst, with higher temperatures enhancing H2 production in ethanol steam reforming reactions but reducing the catalyst's CO2 capture capacity.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Vildan Aker, Nezihe Ayas
Summary: Ethanol steam reforming (ESR) is a promising technology for hydrogen production, and the study focuses on the influence of cobalt loading and ESR conditions on H2 selectivity and catalytic stability. Ni-Co/Al2O3 (5 wt% Co) catalyst exhibited the best performance with small metal crystallite size, high surface area, and high catalytic activity. Optimal conditions for 100% ethanol conversion and maximum H2 selectivity were found to be 600°C, 0.05 L/gcat.h, and S:C molar ratio of 12:1. The Ni-Co interaction was found to affect the catalytic activity, and the stability test showed minimal coke deposition.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Energy & Fuels
Cui Quan, Ziyue Gao, Xuqing Liu, Norbert Miskolczi
Summary: A series of Ni-Ce/mesopore Y catalysts were synthesized and their performance in ethanol steam reforming was studied. The addition of Ce promoter improved the stability of the catalyst significantly, and under certain conditions, the catalyst showed the best catalytic and hydrogen production performance.
JOURNAL OF THE ENERGY INSTITUTE
(2024)
Article
Chemistry, Physical
Michal Sliwa, Katarzyna Samson
Summary: The performance of CuO/ZrO2 catalysts doped with Mn, Ni, Ga in ethanol steam reforming for hydrogen production was evaluated. Doping was found to increase hydrogen yield, change carbon-containing product distribution, and inhibit acetic acid formation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Marinela D. Zhurka, James A. Anderson, Alan J. McCue, Angeliki A. Lemonidou, Panagiotis N. Kechagiopoulos
Summary: Sustainable hydrogen production from bio-ethanol can be improved by using low-cost and abundant minerals as catalyst supports. This study focuses on the kinetic study of ethanol steam reforming using a Ni catalyst supported on natural sepiolite, and investigates the effect of the support on the reaction mechanism. It is found that the mechanism depends on the catalyst calcination temperature and degree of hydration of the sepiolite, with the presence of multiple adsorption sites for oxygenates and water.
REACTION CHEMISTRY & ENGINEERING
(2023)
Article
Energy & Fuels
Xia An, Caiqin Feng, Jia Ren, Kai Shi, Yali Du, Xianmei Xie, Xu Wu
Summary: In this study, high-performance Ethanol Steam Reforming (ESR) catalyst was prepared by adding copper and magnesium into NiAl Layered Double Hydroxides (NiAl-LDHs) using the coprecipitation method. The addition of Cu metal increased ethanol conversion rate and Mg helped neutralize acid sites, preventing the production of ethylene as a dehydration product. Through catalyst composition and structure optimization, the ethanol was completely converted and stable hydrogen production was achieved in a 19-hour test.
JOURNAL OF THE ENERGY INSTITUTE
(2021)
Article
Chemistry, Physical
Pingchao Zeng, Binlin Dou, Hua Zhang, Kai Wu, Longfei Zhao, Chuanqi Luo, Haisheng Chen, Yujie Xu
Summary: Chemical looping steam reforming (CLSR) using oxygen carriers (OCs) has been demonstrated as an efficient technology for hydrogen production. In this study, NiO/MgAl2O4 OCs were employed for hydrogen production via CLSR with and without CaO sorbent for in-situ CO2 removal (SE-CLSR). The optimal temperature for hydrogen production was found to be 650°C, and the 1g 20NiO/MgAl2O4 catalysts showed high hydrogen selectivity and minimal 'dead time'. High purity hydrogen was successfully obtained via CLSR coupled with CaO sorbent, and stable hydrogen production was achieved with modified stability SE-CLSR experiments.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Multidisciplinary Sciences
Hao Meng, Yusen Yang, Tianyao Shen, Wei Liu, Lei Wang, Pan Yin, Zhen Ren, Yiming Niu, Bingsen Zhang, Lirong Zheng, Hong Yan, Jian Zhang, Feng-Shou Xiao, Min Wei, Xue Duan
Summary: This paper reports a RhNi/TiO2 catalyst with a tunable RhNi-TiO2 strong bimetal-support interaction derived from the structure topological transformation of RhNiTi-layered double hydroxides precursors. The resulting catalyst exhibits extraordinary catalytic performance toward ethanol steam reforming reaction with high H-2 yield, production rate, and operational stability.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Luiz G. Possato, Sandra H. Pulcinelli, Leandro Martins, Valerie Briois, Celso Santilli
Summary: In this study, operando time-resolved X-ray absorption spectroscopy was used to investigate the changes of nickel catalyst during ethanol steam reforming reaction. Analysis of the spectra data revealed the presence of various nickel species at different stages and showed that adding surfactants can enhance the catalyst's activity and stability.
Article
Energy & Fuels
Mingqiang Chen, Xiaoyang Feng, Yishuang Wang, Defang Liang, Chang Li, Zhonglian Yang, Jun Wang
Summary: In this study, attapulgite-based MCM-41 (AM) was synthesized using attapulgite as a silicon source, and AM-supported Ni/Ce/Zr catalysts were manufactured by sol-gel assisted impregnation method. It was found that the optimal Ce-Zr additives and calcination temperature could enhance the electronic interaction among Ni/Ce/Zr components, resulting in the highest ethanol conversion rate and stability of the catalyst. This study provides a new opportunity for the preparation of efficient and low-cost AM-supported Ni/Ce/Zr catalysts for ethanol steam reforming.
Review
Chemistry, Physical
S. Anil, S. Indraja, R. Singh, S. Appari, B. Roy
Summary: This article examines the impact of modifying nickel with various noble and non-noble metals and altering supports with different metal oxides on ethanol steam reforming (ESR) reaction. It explores the reaction mechanisms and thermodynamics, emphasizing the importance of catalyst morphology, active metal promoter, and support modifier in hydrogen production and carbon deposition prevention.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Jose L. Contreras, Anabel Figueroa, Beatriz Zeifert, Jose Salmones, Gustavo A. Fuentes, Tamara Vazquez, Deyanira Angeles, Leticia Nuno
Summary: Ni-Co/ex-hydrotalcite catalysts stabilized with tungsten oxides showed high performance in ethanol steam reforming reaction, with the catalyst having a Ni/Co atomic ratio of 2.22 displaying the best conversion and selectivity to H2. The cooperative action between Ni and Co, along with the stabilization effect of tungsten oxides, contributed to the stability and regeneration of the catalysts in situ at 600 degrees C.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Review
Chemistry, Physical
Kai Shi, Xia An, Xu Wu, Xianmei Xie
Summary: This review summarizes the reaction mechanism and carbon deposition process of ethanol steam reforming (ESR), and proposes an anti-coking strategy, providing possibilities for the design of new and stable catalysts.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)