Article
Engineering, Environmental
Yuan Gao, Liguang Dou, Shuai Zhang, Lijun Zong, Jie Pan, Xiucui Hu, Hao Sun, Kostya (Ken) Ostrikov, Tao Shao
Summary: Research utilized highly-adjustable pulsed power and nickel foam based catalysts to achieve high-performance plasma-enabled CO2 methanation. In-situ optical diagnosis, zero-dimension kinetic modelling, and in-line electrical measurements provided insights into the synergistic effect on electron-induced reaction and vibrational distributions.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Gabriel De Piano, Julio J. Andrade Gamboa, Adriana M. Condo, Silvina Bengio, Fabiana C. Gennari
Summary: A series of Ni-Fe bimetallic catalysts supported on high surface area of Ce0.8Zr0.2O2 (CZ) and SiO2 (S) were prepared with different Ni:Fe ratios, and the effect of Fe content on CO2 methanation promotion was studied. Lower Fe content was found to increase CO2 conversion and CH4 selectivity. Ni/CZ catalyst exhibited superior activity and stability in the study.
APPLIED CATALYSIS A-GENERAL
(2022)
Article
Chemistry, Physical
Wenli Gao, Xin Meng, Daoming Jin, Bowen Xu, Wenhua Dai, Rui Zhao, Zhong Xin
Summary: Polyols were used to pretreat mesoporous silica molecular sieve SBA-16 in order to prepare bimetallic Ni-Fe catalyst with improved CO methanation activity at lower temperature. The polyols released heat during combustion, providing energy for metal precursor decomposition and reducing metal particle size, resulting in enhanced metal-support interaction and smaller metal particles for higher catalytic performance.
MOLECULAR CATALYSIS
(2021)
Article
Engineering, Chemical
Po-Wei Lan, Cheng-Chien Wang, Chuh-Yung Chen
Summary: In this study, Ni-Fe catalysts with different Ni/Fe ratios were prepared for efficient CO2 methanation, with Ni8Fe2 catalyst showing the best performance in converting over 80% of CO2 to methane. Under reaction conditions controlled at H2/CO2 = 4 and GHSV around 1000 h(-1), the CH4 selectivity of CO2 methanation could reach 95%. These low-cost and easily prepared Ni-Fe catalysts have high potential for future commercialization.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Chemistry, Physical
Patryk Blaszczak, Marcin Zajac, Agata Ducka, Krzysztof Matlak, Barbara Wolanin, Sea-Fue Wang, Anna Mandziak, Beata Bochentyn, Piotr Jasinski
Summary: In this study, a series of SOECs modified with a small amount of Co ions were used to investigate the synergy between transition metals for enhancing electrochemical and chemical activity. The addition of Co significantly increased the concentration of CH4 and improved the electrochemical efficiency of water and CO2 co-electrolysis. The characterization analysis revealed the mechanism of synergy between Ni and Co host metals and identified the causes of increased activity. Additionally, a novel discovery was made regarding the catalytic performance of NiCo2O4 spinel structure.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Environmental
Jitendra Kumar Prabhakar, Pankaj A. Apte, Goutam Deo
Summary: Replacing nickel with iron can promote CO2 methanation with supported nickel catalyst, which is often due to the presence of Ni-Fe alloy. However, the effect of replacing Ni with Fe on the rate expression of CO2 methanation and the specific causes leading to the promotion are not addressed. Through synthesis, characterization, and reaction studies, it is found that the presence of Ni-Fe alloy particles in the bimetallic catalysts increases the number of adsorption-sites and the fractional coverage of adsorbed CO2 and H2, resulting in enhanced CH4 formation rate.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Andres Sanz-Martinez, Paul Duran, Victor D. Mercader, Eva Frances, Jose Angel Pena, Javier Herguido
Summary: This study focused on the concept of 'biogas upgrading' to increase CH4 levels in sweetened biogas to those of synthetic natural gas. The behavior of three lab-made catalysts in a CO2 methanation reaction was tested, showing good catalytic performance and high CH4 selectivity. Addition of CH4 did not significantly alter the reaction mechanism, allowing for potential utilization of off-peak H-2 for maximizing CH4 yield.
Article
Engineering, Environmental
Yan Resing Dias, Oscar W. Perez-Lopez
Summary: Mitigating CO2 emissions has become an important issue nowadays, and converting CO2 to CH4 as a natural gas substitute and H2 storage source is an interesting alternative. In this study, Ni/SiO2 catalysts promoted by Fe, Co and Zn were prepared and showed improved performance in CO2 conversion to methane, with Ni-Co/SiO2 achieving the best results in terms of CO2 conversion and CH4 selectivity.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Applied
Jie Ren, Feng Zeng, Chalachew Mebrahtu, Zhandong Wang, Regina Palkovits
Summary: The promotional effect of Fe and Ru on the CO2 methanation mechanism in Ni/ZrO2 catalysts was investigated, and it was found that adding Ru can enhance the activity and stability of the catalyst, whereas Fe cannot achieve the same effect.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
M. Gonzalez-Castano, J. C. Navarro de Miguel, A. Penkova, M. A. Centeno, J. A. Odriozola, H. Arellano-Garcia
Summary: This study proposes an innovative Ni catalyst supported over YMnO3 perovskite as a promising catalytic system for CO2 methanation reaction. The synergism between strongly interacting Ni particles with partially reduced YMnO3-x perovskites enables highly active and stable catalytic behaviors.
APPLIED MATERIALS TODAY
(2021)
Article
Nanoscience & Nanotechnology
Shuangshuang Li, Jie Xu, Ju Wang, Xianli Wu, Chen Liang, Xinxin Zhang, Chunhua Du
Summary: Supported bimetallic Ni-Co alloy catalysts modified with La2O3 were prepared by using a perovskite composite oxide as the precursor. Characterization and performance tests showed that the catalyst exhibited good resistance to metal sintering and carbon deposition. Compared to mono-metallic nickel catalyst, the supported bimetallic Ni-Co alloy catalysts showed excellent catalytic activity, selectivity, stability, and resistance to carbon deposition and metal sintering.
Article
Chemistry, Physical
Yingzhe Yu, Junxiu Lu, Weiwei Zhang, Kuiwei Yang, Minhua Zhang
Summary: During CO methanation, H2O and CO2 can be produced on Ni-based catalysts. Density functional theory computations reveal that hydrogenation of OH leads to H2O formation on both step and close-packed surfaces of Ni and Ni3Fe catalysts. The main mechanism for CO2 formation involves the conversion of the carboxyl group from cis to trans isomer. Moreover, Ni3Fe (211)-AB exhibits superior inhibition of CO2 formation and can enhance the selectivity of CH4.
APPLIED SURFACE SCIENCE
(2023)
Review
Chemistry, Physical
A. H. Hatta, A. A. Jalil, N. S. Hassan, M. Y. S. Hamid, A. F. A. Rahman, L. P. Teh, D. Prasetyoko
Summary: This paper provides a detailed overview of bimetallic catalysts for CO methanation, including the synthesis method and its effect on physicochemical characteristics. The bimetallic catalyst can enhance reaction effectiveness by adjusting the interaction between metal-support and metal-metal, and it also improves particle size and dispersion. The paper also presents the mechanism of CO methanation over the bimetallic catalyst.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Materials Science, Multidisciplinary
M. Safdar, M. Gonzalez-Castano, A. Penkova, M. A. Centeno, J. A. Odriozola, H. Arellano-Garcia
Summary: This study investigates the impact of Ni-supported YMn1-xAlxO3 catalysts on the CO2 methanation reaction. The results show the importance of the support nature and the improvement in redox behavior achieved through Al-incorporation.
APPLIED MATERIALS TODAY
(2022)
Article
Chemistry, Physical
Chuanshen Wang, Tongming Su, Zuzeng Qin, Hongbing Ji
Summary: In this study, Ni-In/γ-Al2O3 catalysts were prepared and used for the dry reforming of methane, and it was found that the catalyst with a Ni/In ratio of 3/2 exhibited the optimal conversion activity and stability. The addition of In increased the oxygen species and oxygen vacancy amounts on the catalyst, enhancing the CO2 conversion rate and reducing carbon deposition by promoting Ni particle dispersion and inhibiting agglomeration.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)