Low temperature CO oxidation over Ag/SBA-15 nanocomposites prepared via in-situ "pH-adjusting" method
发表时间：2019-03-09
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- 论文类型：
- 期刊论文
- 第一作者：
- Zhang, Xiaodong
- 通讯作者：
- Qu, ZP (reprint author), Dalian Univ Technol, Sch Environm Sci & Technol, Key Lab Ind Ecol & Environm Engn MOE, Linggong Rd 2, Dalian 116024, Peoples R China.
- 合写作者：
- Qu, Zhenping,Li, Xinyong,Zhao, Qidong,Wang, Yi,Quan, Xie
- 发表时间：
- 2011-11-30
- 发表刊物：
- CATALYSIS COMMUNICATIONS
- 收录刊物：
- Scopus、SCIE、EI
- 文献类型：
- J
- 卷号：
- 16
- 期号：
- 1
- 页面范围：
- 11-14
- ISSN号：
- 1566-7367
- 关键字：
- Ag/SBA-15; pH-adjusting; CO oxidation; H(2)-TPR
- 摘要：
- The catalytic activity for CO oxidation over Ag/SBA-15 catalysts prepared by in-situ "pH-adjusting" method is studied in this paper. The prepared silver catalyst (7.8 wt%) under pH = 5 condition gives 98% of CO oxidation at 70 degrees C, as compared to 140 degrees C with conventional silver catalyst without pH adjusting (6.1 wt%). However, more Ag(2)O clusters are formed inside the channels with the further pH increasing, resulting in the low catalytic activity for CO oxidation. Therefore the pH value shows significant effect on the silver content and the species state, consequently affecting the catalytic activity of Ag/SBA-15 catalysts for CO oxidation. (C) 2011 Elsevier B.V. All rights reserved.
- 是否译文：
- 否
