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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 | |
Zhang, Tengfei1,2; Wang, Weiwei3; Gu, Fangna2 ; Xu, Wenqing2; Zhang, Jianling2; Li, Zhenxing3; Zhu, Tingyu2; Xu, Guangwen4,5; Zhong, Ziyi6,7; Su, Fabing2,5
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| 2022-09-05 | |
| Source Publication | APPLIED CATALYSIS B-ENVIRONMENTAL
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| ISSN | 0926-3373 |
| Volume | 312Pages:16 |
| Abstract | 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. |
| Keyword | CO2 methanation Ni catalyst La-Ce-O solid solution Performance Mechanism |
| DOI | 10.1016/j.apcatb.2022.121385 |
| Language | 英语 |
| WOS Keyword | CARBON-DIOXIDE METHANATION ; NI CATALYSTS ; NI/CEO2 CATALYST ; NI/ZRO2 CATALYST ; CERIA ; NANOPARTICLES ; SELECTIVITY ; CEO2 ; ORGANIZATION ; FRAMEWORK |
| Funding Project | 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 Research Area | Chemistry ; Engineering |
| WOS Subject | Chemistry, Physical ; Engineering, Environmental ; Engineering, Chemical |
| Funding Organization | 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) |
| WOS ID | WOS:000830160800002 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/54325 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Gu, Fangna; Xu, Wenqing; Li, Zhenxing; Su, Fabing |
| Affiliation | 1.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 3.China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China 4.Shenyang Univ Chem Technol, Key Lab Resources Chem & Mat, Minist Educ, Shenyang 110142, Peoples R China 5.Shenyang Univ Chem Technol, Inst Ind Chem & Energy Technol, Shenyang 110142, Peoples R China 6.Guangdong Technion Israel Inst Technol GTIIT, Dept Chem Engn, 241 Daxue Rd, Shantou 515063, Peoples R China 7.Technion Israel Inst Technol IIT, IL-32000 Haifa, Israel |
| Recommended Citation 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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