文献类型：期刊文献

英文题名：Excellent behaviors of highly dispersed Ni-based catalyst in CO methanation synthesized by in-situ hydrothermal method with carbon quantum dots assisted

作者：Gao, Wenli[1];Yin, Qiangfeng[1];Meng, Xin[1];He, Xuelian[1];Xin, Zhong[1,2]

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Multiphase Mat Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, State Key Lab Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2022

卷号：310

外文期刊名：FUEL

收录：;EI(收录号：20214711209531);WOS:【SCI-EXPANDED(收录号:WOS:000743137000001)】；

基金：This work was supported by the National Natural Science Foundation of China (NSFC No. 21808062, 21808064, and 21776091).

语种：英文

外文关键词：CQDs; Nickel-based; Supported catalyst; High dispersion; CO methanation

摘要：Confining the active metal particles inside the channel of mesoporous support is an effective way to improve the catalytic activity and stability, as well as enhance the metal usage thus reducing the required amount of supported metal. In our research, a novel highly efficient Nickel-based catalyst with the metal particles confined in the pores of mesoporous support was obtained by in-situ hydrothermal synthesis with carbon quantum dots (CQDs) assisted. This catalyst is of scientific significance for low metal content (as low as 0.9 wt%), except for its large specific surface area, high metal dispersion and small metal particle size. And the catalyst exhibits satisfying CO methanation catalytic activity with 95% CO conversion and 90% CH4 selectivity at 400 degrees C and 15000 mlg(-1)h(-1) when the metal loading is 0.9 wt%. Meanwhile, the catalyst presents excellent thermal and long-term stability for that the metal particles are confined inside the pores of support, which could strengthen the metal-support interaction and thus inhibiting the metal agglomeration and carbon deposition effectively.