High catalytic activity for formaldehyde oxidation of AgCo/APTES@MCM-41 prepared by two steps method
发表时间：2019-03-09
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- 论文类型：
- 期刊论文
- 第一作者：
- Qu, Zhenping
- 通讯作者：
- Qu, ZP (reprint author), Dalian Univ Technol, Key Lab Ind Ecol & Environm Engn MOE, Sch Environm Sci & Technol, Linggong Rd 2, Dalian 116024, Peoples R China.
- 合写作者：
- Chen, Dan,Sun, Yahui,Wang, Yi
- 发表时间：
- 2014-10-01
- 发表刊物：
- APPLIED CATALYSIS A-GENERAL
- 收录刊物：
- SCIE、Scopus
- 文献类型：
- J
- 卷号：
- 487
- 页面范围：
- 100-109
- ISSN号：
- 0926-860X
- 关键字：
- AgCo bimetal; SMMI; Interface; Surface oxygen species; Formaldehyde oxidation
- 摘要：
- We reported here a novel synthesis procedure to prepare a highly active bimetallic AgCo/APTES@MCM-41 catalyst. Complete oxidation of formaldehyde was achieved at temperature as low as 90 degrees C over the bimetallic catalysts with Ag/Co =3/1 (mass ratio). N-2 isotherms, small-angle XRD results suggested that both Ag and Co species were well dispersed on the support, and the pore structure of the support was not destroyed after introducing the active metal. The formation of the strong metal-metal interaction (SMMI) between Ag and Co in the bimetallic catalysts due to the electron transfer between each other resulted in the high Co3+/Co2+ ratio and good low-temperature reducibility. And more surface active oxygen species (O-surf) formed on the surface of the bimetallic catalysts. All these factors gave rise to the high formaldehyde catalytic oxidation activity in AgCo bimetallic catalysts. The possible structure changes of bimetallic catalysts and the reaction path for the complete oxidation of formaldehyde over AgCo bimetallic catalyst was also proposed. (c) 2014 Elsevier B.V. All rights reserved.
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