Morphology and Reactivity Evolution of HCP and FCC Ru Nanoparticles under CO Atmosphere
Morphology and Reactivity Evolution of HCP and FCC Ru Nanoparticles under CO Atmosphere
复制标题
CO 气氛下 HCP 和 FCC Ru 纳米粒子的形貌和反应性演化
DOI:
10.1021/acscatal.8b05074
复制
发表时间:
2019-02
期刊:
影响因子:
12.9
通讯作者:
Xiao-Dong Wen
中科院分区:
文献类型:
--
作者:
Peng Zhao;Zhi Cao;Xingchen Liu;Pengju Ren;Dong-Bo Cao;Hongwei Xiang;Haijun Jiao;Yong Yang;Yong-Wang Li;Xiao-Dong Wen
The morphology change of metallic nanoparticles induced by the interaction of gas molecules with nanoparticles is a very important surface chemistry process in heterogeneous catalysis. Here, we performed a thorough study to provide understanding of the influence of CO adsorption on theoretically established Ru nanoparticle models through an approach combining density functional theory, Wulff construction, and ab initio atomistic thermodynamics. The morphology of constructed Ru nanoparticles undergoes significant evolution upon changing CO coverage, exposed temperature, and pressure. The contribution from flat facets becomes more significant in equilibrium morphology of nanoparticles as the surface CO coverage increases. Such morphological evolution has a consequential impact on the inherited catalytic performance of Ru NPs, as they were applied into three probe catalytic reactions, CO direct dissociation, HCO formation, and CH3hydrogenation. This study enriches the current knowledge of the ruthenium nanoparticle catalyst evolution under CO gaseous exposure and provides fundamental insights into the design of highly selective and active metallic nanoparticle catalysts.
登录
查看更多内容
影响因子:
4.6
作者:
Song C;Sakata O;Kumara LS;Kohara S;Yang A;Kusada K;Kobayashi H;Kitagawa H
通讯作者:
Kitagawa H
影响因子:
5
作者:
Haimei Zheng;Y. Meng;Yimei Zhu
通讯作者:
Haimei Zheng;Y. Meng;Yimei Zhu
DOI:
10.1021/i200020a001
发表时间:
1983
期刊:
Industrial & Engineering Chemistry Process Design and Development
影响因子:
--
作者:
R. Dixit;L. Tavlarides
通讯作者:
R. Dixit;L. Tavlarides
影响因子:
7.3
作者:
Ojeda, Manuel;Nabar, Rahul;Iglesia, Enrique
通讯作者:
Iglesia, Enrique
影响因子:
10.8
作者:
H. Ye;Qingxiao Wang;M. Catalano;N. Lu;Joseph Vermeylen;Moon J. Kim;Yuzi Liu;Yugang Sun;Xiaohu X
通讯作者:
H. Ye;Qingxiao Wang;M. Catalano;N. Lu;Joseph Vermeylen;Moon J. Kim;Yuzi Liu;Yugang Sun;Xiaohu X