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个人信息Personal Information
教授
博士生导师
硕士生导师
性别:女
毕业院校:中科院大连化学物理研究所
学位:博士
所在单位:环境学院
学科:环境科学与工程. 环境工程. 环境科学
办公地点:环境楼B511
电子邮箱:quzhenping@dlut.edu.cn
High catalytic activity for formaldehyde oxidation of AgCo/APTES@MCM-41 prepared by two steps method
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论文类型:期刊论文
发表时间:2014-10-01
发表刊物:APPLIED CATALYSIS A-GENERAL
收录刊物:SCIE、Scopus
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.