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Enhancing the low-temperature CO2 methanation over Ni/La-CeO2 catalyst: The effects of surface oxygen vacancy and basic site on the catalytic performance

文献类型：期刊论文

作者Zhang, Tengfei3,4; Wang, Weiwei2; Gu, Fangna4; Xu, Wenqing4; Zhang, Jianling4; Li, Zhenxing2; Zhu, Tingyu4; Xu, Guangwen5,6; Zhong, Ziyi1,7; Su, Fabing4,6
刊名APPLIED CATALYSIS B-ENVIRONMENTAL
出版日期2022-09-05
卷号312页码:16
ISSN号0926-3373
关键词CO2 methanation Ni catalyst La-Ce-O solid solution Performance Mechanism
DOI10.1016/j.apcatb.2022.121385
英文摘要This work reports a strategy to promote the low-temperature CO2 methanation on the Ni-based catalyst by tuning the surface oxygen vacancy and medium-strength basic sites of the CeO2 support and thus changing the reaction pathway. La species was introduced into CeO2 support and calcined at 600 degrees C (CeO2-La-600) to form a La-Ce-O solid solution with a thin La2O2CO3 layer on the surface, generating more basic sites and oxygen vacancies. This unique structure facilitated the adsorption and direct dissociation of CO2. Over Ni/CeO2-La-600, the reaction follows the HCOO* and *CO pathways, while over Ni/CeO2-600, the reaction occurs via the HCOO* pathway only. The decomposition of CO2 * to *CO is energetically more favorable than hydrogenation to HCOO* on Ni/CeO2-La-600, resulting in its higher catalytic performance at low temperatures. This work unravels the complex interplay among oxygen vacancy, basic site, and reaction pathway in CO2 methanation over the Ni-based catalysts.
WOS关键词CARBON-DIOXIDE METHANATION ; NI CATALYSTS ; NI/CEO2 CATALYST ; NI/ZRO2 CATALYST ; CERIA ; NANOPARTICLES ; SELECTIVITY ; CEO2 ; ORGANIZATION ; FRAMEWORK
资助项目National Natural Science Foundation of China[21776286] ; National Key Research and Development Program of China[2018YFB0604501] ; 2020 Li Ka Shing Foundation Cross-Disciplinary Research Grant[2020LKSFG09A] ; Guangdong Province Key Discipline Fund (GTIIT)
WOS研究方向Chemistry ; Engineering
语种英语
出版者ELSEVIER
WOS记录号WOS:000830160800002
资助机构National Natural Science Foundation of China ; National Key Research and Development Program of China ; 2020 Li Ka Shing Foundation Cross-Disciplinary Research Grant ; Guangdong Province Key Discipline Fund (GTIIT)
源URL[http://ir.ipe.ac.cn/handle/122111/54324]  
专题中国科学院过程工程研究所
通讯作者Gu, Fangna; Xu, Wenqing; Li, Zhenxing; Su, Fabing
作者单位1.Technion Israel Inst Technol IIT, IL-32000 Haifa, Israel
2.China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China
3.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
5.Shenyang Univ Chem Technol, Key Lab Resources Chem & Mat, Minist Educ, Shenyang 110142, Peoples R China
6.Shenyang Univ Chem Technol, Inst Ind Chem & Energy Technol, Shenyang 110142, Peoples R China
7.Guangdong Technion Israel Inst Technol GTIIT, Dept Chem Engn, 241 Daxue Rd, Shantou 515063, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Tengfei,Wang, Weiwei,Gu, Fangna,et al. Enhancing the low-temperature CO2 methanation over Ni/La-CeO2 catalyst: The effects of surface oxygen vacancy and basic site on the catalytic performance[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2022,312:16.
APA Zhang, Tengfei.,Wang, Weiwei.,Gu, Fangna.,Xu, Wenqing.,Zhang, Jianling.,...&Su, Fabing.(2022).Enhancing the low-temperature CO2 methanation over Ni/La-CeO2 catalyst: The effects of surface oxygen vacancy and basic site on the catalytic performance.APPLIED CATALYSIS B-ENVIRONMENTAL,312,16.
MLA Zhang, Tengfei,et al."Enhancing the low-temperature CO2 methanation over Ni/La-CeO2 catalyst: The effects of surface oxygen vacancy and basic site on the catalytic performance".APPLIED CATALYSIS B-ENVIRONMENTAL 312(2022):16.

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来源：过程工程研究所

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