文献类型：期刊文献

英文题名：The dual-active-site tandem catalyst containing Ru single atoms and Ni nanoparticles boosts CO2 methanation

作者：Zhang, Tengfei[1,2,3];Zheng, Peng[4];Gu, Fangna[1];Xu, Wenqing[1];Chen, Wenxing[5];Zhu, Tingyu[1];Han, Yi-Fan[6];Xu, Guangwen[4,7];Zhong, Ziyi[2,8];Su, Fabing[1,7]

机构：[1]Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China;[2]GTIIT, Guangdong Prov Key Lab Mat & Technol Energy Conve, Shantou 515063, Guangdong, Peoples R China;[3]Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China;[4]Shenyang Univ Chem Technol, Key Lab Resources Chem & Mat Minist Educ, Shenyang 110142, Peoples R China;[5]Beijing Inst Technol, Energy & Catalysis Ctr, Sch Mat Sci & Engn, Beijing 100081, Peoples R China;[6]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[7]Shenyang Univ Chem Technol, Inst Ind Chem & Energy Technol, Shenyang 110142, Peoples R China;[8]Guangdong Technion Israel Inst Technol GTIIT, Dept Chem Engn, 241 Daxue Rd, Shantou 515063, Peoples R China

年份：2023

卷号：323

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY

收录：;EI(收录号：20224713148608);WOS:【SCI-EXPANDED(收录号:WOS:000890460500001)】；

基金：This research was funded by the National Natural Science Foundation of China (22278405 and 52222005) and the Open Project Fund from Guangdong Provincial Key Laboratory of Materials and Technology for Energy Conversion, Guangdong Technion-Israel Institute of Technology (No. MATEC2022KF0XX) . Z.Z also thanks the financial support of the 2020 Li Ka Shing Foundation Cross-Disciplinary Research Grant (2020LKSFG09A) .

语种：英文

外文关键词：Dual active sites; Tandem catalyst; Ru single atoms; Ni nanoparticles; CO2 methanation

摘要：Hydrogenation of CO2 into CH4 is an effective strategy for dealing with CO2-relevant environmental problems. Since the CO2 methanation reaction involves multiple electron transfers and various C-1 intermediates, improving the reaction rate at each step is critical to accelerating the entire reaction. Here, we report a dual-active-site tandem catalyst (Ru1Ni/CeO2) composed of Ru single atoms (Ru-1) and Ni nanoparticles, which can effectively convert CO2 to CH4, showing similar to 90% CO2 conversion and similar to 99% CH4 selectivity at 325 degrees C, much higher than those of the Ru-1/CeO2 and Ni/CeO2 catalysts. Experimental and theoretical calculation results reveal that Ru-1 is extremely active for converting CO2 to CO, while the Ni site is highly efficient for the subsequent sequential CO to CH4 reaction step. The coexistence of the Ru-1 and Ni sites significantly boosts the overall reaction. This work offers a promising strategy for the rational design of efficient multisite tandem catalysts.