文献类型：期刊文献

英文题名：Tuning the selectivity of the CO2 hydrogenation reaction using boron-doped cobalt-based catalysts

作者：Wang, Jiaqi[1,2];Liu, Kaihong[2];Zhao, Jingjing[2];Li, Xiuping[2];Yin, Bolin[2];Jiang, Bo[2];Li, Hexing[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Shanghai Normal Univ, Coll Chem & Mat Sci, Shanghai Frontiers Sci Ctr Biomimet Catalysis, Chinese Educ Minist Key Lab, Shanghai 200234, Peoples R China

年份：2024

卷号：14

期号：10

起止页码：6502

外文期刊名：RSC ADVANCES

收录：;EI(收录号：20241015670407);WOS:【SCI-EXPANDED(收录号:WOS:001173704100001)】；

基金：This work was supported by the National Key Research and Development Program of China (2020YFA0211004), the National Natural Science Foundation of China (22236005, 22106106), and the Foundation from the Shanghai Local Government (22dz1205400, 21ZR1446600, 22010503400, 23520711100), and "111" Innovation and Talent Recruitment Base (D18020). This work was also sponsored by the Shanghai Engineering Research Center of Green Energy Chemical Engineering and Energy Science and Technology under the Shanghai Class IV Peak Disciplinary Development Program.

语种：英文

外文关键词：Boron - Catalyst activity - Catalyst selectivity - Cobalt - Electronic states - Hydrogenation - Product design

摘要：Direct CO2 hydrogenation to value-added chemicals is a promising path toward realizing the "carbon-neutral" goal. However, controlling the selectivity of CO2 hydrogenation toward desired products (e.g., CO and CH4) using non-precious metal-based catalysts is important but challenging. It is imperative to explore catalysts with high activity and stability. Herein, boron-doped cobalt nanoparticles supported on H-ZSM-5 were devised for CO2 hydrogenation to produce CO in a gas-solid flow system. Our results demonstrate that boron doping not only increases the CO2 adsorption capability of the catalyst but also optimizes the electronic state of Co for CO desorption during hydrogenation process. As a result, the boron-doped cobalt catalysts displayed an enhanced CO selectivity of 94.5% and a CO2 conversion rate of 45.6%, which is much higher than that of Co-ZSM-5 without boron doping. This study shows that the strategic design of metal borides is important for controlling the selectivity of desired products in the CO2 hydrogenation reaction.