Pt/TiO2-Al2O3整体式催化剂的制备及甲醛废气催化氧化  

Catalytic Oxidation of Formaldehyde-containing Waste Gas with Pt/TiO2-Al2O3 Monolithic Catalyst

作　　者：康莉 雷骞[1] 袁善良 魏日出[1] 张小明[1] 陈洪林[1] 蒋毅[1] KANG Li;LEI Qian;YUAN Shan-liang;WEI Ri-chu;ZHANG Xiao-ming;CHEN Hong-lin;JIANG Yi(Chengdu Institute of Organic Chemistry,Chinese Academy of Sciences,Chengdu 610041,China;University of Chinese Academy of Science,Beijing 100049,China)

机构地区：[1]中国科学院成都有机化学研究所,四川成都610041 [2]中国科学院大学,北京100049

出　　处：《合成化学》2020年第7期637-643,共7页Chinese Journal of Synthetic Chemistry

基　　金：四川省科技创新人才项目(2018RZ0146);四川省科技支撑计划(2015GZ169)。

摘　　要：以Al2O3-TiO2混合物为载体,采用过量浸渍法负载Pt制备出催化剂涂层,再将其涂覆到堇青石蜂窝载体上制备了整体式催化剂,利用N 2吸附/脱附,XRD,NH 3-TPD和SEM-EDS表征。研究了催化剂涂层中TiO2含量和Pt负载量对甲醛去除率的影响。结果表明:TiO2的含量为5 wt%,Pt的负载量为1 wt%的整体式催化剂在室温(5~35℃)、甲醛气体进口浓度为50~300 mg·m^-3和体积空速为10000 h^-1的条件下,甲醛去除率达98.4%以上。连续反应150 h之后催化剂仍可保持良好催化活性。The Pt/TiO2-Al2O3 monolithic catalysts were prepared by coating Pt impregnated TiO2-Al2O3 mixed carrier on cordierite honeycomb,and were characterized by N 2 adsorption/desorption,XRD,NH 3-TPD and SEM-EDS.The optimized washcoat catalyst was obtained by investigation of the effects of TiO2 content and Pt loading on the formaldehyde removal.The monolithic catalyst,synthesized by the optimized contents of 5 wt%of TiO2 and 1 wt%of Pt,showed more than 98.4%of formaldehyde removal under 5~35℃,10000 h^-1 of GHSV and 50~300 mg·m^-3 of formaldehyde.Moreover,the catalyst maintained good activity after 150 h of continuous reaction.

关 键 词：整体式催化剂 制备 催化氧化 甲醛 废气 过量浸渍法 

分 类 号：O643.36[理学—物理化学]