Abstract: Taking cordierite honeycomb ceramics (CHC) as the carrier, a new Pt - based monolithic catalyst Pt -CHC was prepared by electroless plating method. Pt -CHC catalyst performance in formaldehyde catalytic combustion was studied. Activity tests of Pt-CHC catalyst were carried on under conditions of different initial formaldehyde concentrations， relatively wide range of gas hourly space velocities and different initial relative humidities. The prepared catalyst was characterized by SEM and EDS. The results show that Pt-CHC catalyst with low Pt loading has good catalytic activities that formaldehyde can be completely purified at 100 ℃ with Pt mass fraction of 0.24%. The active component Pt is selective enrichment on the surface of the cordierite honeycomb ceramics substrate. Pt particles are uniformly distributed in channel and at orifice of the catalyst with particle size below 100 nm.

Keywords： formaldehyde; removal; monolithic catalyst; electroless plating method

中图分类号：O643.3          文献标志码：A

文章编号：1008-5548（2014）04-0043-05

DOI:10.13732/j.issn.1008-5548.2014.04.010

收稿日期：2013-09-26， 修回日期：2013-10-14，在线出版时间：2014-08-28。

基金项目：广州市珠江科技新星专项， 编号：2011J2200041； 广东省科技计划项目，编号：2012A030600006； 广东高校产学研结合示范基地及科技成果转化重大项目，编号：cgzhzd1104。

第一作者简介：李永峰（1976—），男，博士，副教授，研究方向为环境催化。电话：020-39322201， E-mail：gdliyf@163.com。