期刊
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
卷 92, 期 2, 页码 398-407出版社
SPRINGER
DOI: 10.1007/s10971-019-05031-1
关键词
SBA-15; Silver; Catalysts; Volatile organic compounds; Oxidation; Ceria
资金
- Russian Science Foundation [18-73-10109] Funding Source: Russian Science Foundation
The series of catalysts representing the mesoporous ordered silica SBA-15 with supported silver or silver and ceria nanoparticles were synthesized by incipient wetness impregnation, characterized by the low-temperature N-2 adsorption, XRD, TEM HR, TPR-H-2 methods, and tested in the low-temperature CO oxidation and total oxidation of methanol. It was found that two types of silver particles are formed: small particles (<3 nm) inside the pores of the SBA-15 and larger particles (3-15 nm) on the external surface of SBA-15. High activity of the prepared catalyst in oxidation of CO and methanol is attributed to both small sizes of silver particles and the Ag-CeO2 interaction. The distribution of both silver and ceria on the SBA-15 surface determines their interaction and, hence, enhances the catalytic activity in oxidative reactions due to the cooperation of active oxidative sites of silver and ceria at the Ag-CeO2 interface.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据