期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
Engineering oxygen vacancies and localized amorphous regions in CuO-ZnO separately boost catalytic reactivity and selectivity
1
作者 Yongjun Ji Xiaoli Chen +9 位作者 Shaomian Liu Liwen Xing Xingyu Jiang Bin Zhang Huifang Li Wenxing Chen Ziyi Zhong Ligen Wang Guangwen Xu Fabing Su 《Nano Research》 SCIE EI CSCD 2023年第2期2126-2132,共7页
Generating different types of defects in heterogeneous catalysts for synergetic promotion of the reactivity and selectivity in catalytic reactions is highly challenging due to the lack of effective theoretical guidanc... Generating different types of defects in heterogeneous catalysts for synergetic promotion of the reactivity and selectivity in catalytic reactions is highly challenging due to the lack of effective theoretical guidance.Herein,we demonstrate a facile strategy to introduce two types of defects into the CuO-ZnO model catalyst,namely oxygen vacancies(OVs)induced by H2 partial reduction and localized amorphous regions(LARs)generated via the ball milling process.Using industrially important Rochow–Müller reaction as a representative,we found OVs predominantly improved the target product selectivity of dimethyldichlorosilane,while LARs significantly increased the conversion of reactant Si.The CuO-ZnO catalyst with optimized OVs and LARs contents achieved the best catalytic property.Theoretical calculation further revealed that LARs promote the generation of the Cu3Si active phase,and OVs impact the electronic structure of the Cu3Si active phase.This work provides a new understanding of the roles of different catalyst defects and a feasible way of engineering the catalyst structure for better catalytic performances. 展开更多
关键词 oxygen vacancy localized amorphous region CuO-ZnO catalyst REACTIVITY SELECTIVITY
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部