The facet effect of ceria nanoparticles on platinum dispersion and catalytic activity of methanol partial oxidation

被引：18
作者：
Reddy, Kasala Prabhakar [1 ]
Choi, Hanseul [1 ,2 ]
Kim, Daeho [1 ,2 ]
Choi, Minkee [3 ]
Ryoo, Ryong [1 ,2 ]
Park, Jeong Young [1 ,2 ]
机构：
[1] Inst Basic Sci IBS, Ctr Nanomat & Chem React, Daejeon 34141, South Korea
[2] Korea Adv Inst Sci & Technol KAIST, Dept Chem, Daejeon 34141, South Korea
[3] Korea Adv Inst Sci & Technol KAIST, Dept Chem & Biomol Engn, Daejeon 34141, South Korea
来源：
CHEMICAL COMMUNICATIONS | 2021年 / 57卷 / 60期
关键词：
CO OXIDATION; CEO2; NANOCUBES; IN-SITU; PERFORMANCE; METAL; SELECTIVITY; INTERFACE; STABILITY; STATE; OXIDE;
D O I：
10.1039/d1cc02728j
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The effect of platinum-supported nano-shaped ceria catalysts on methanol partial oxidation and methyl formate product selectivity has been investigated. A Pt-supported CeO2 nanocube catalyst had a higher turnover frequency than nanosphere catalysts; however, nanosphere catalysts showed higher selectivity towards methyl formate. The observed ceria shape effect in catalysis was associated with the shape-dependent Pt dispersion and its oxidation states. Furthermore, in situ studies revealed that the reduced platinum and mono-dentate methoxy group were responsible for the higher turnover frequency.
引用
收藏
页码：7382 / 7385
页数：4
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