文献类型：期刊文献

中文题名：Mn-Ce催化剂的制备及其在丙烷催化燃烧中的应用

英文题名：Synthesis of Mn-Ce Composite Oxide Catalyst and Its Application for Propane Combustion

作者：胡总[1];黄振鹏[1];王征[1];郭耘[1];郭杨龙[1];王丽[1];王筠松[1];詹望成[1]

机构：[1]华东理工大学工业催化研究所,上海200237

年份：2018

卷号：36

期号：4

起止页码：431

中文期刊名：中国稀土学报

外文期刊名：Journal of the Chinese Society of Rare Earths

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2017_2018】；

基金：国家重点研发计划项目(2016YFC0204300)资助

语种：中文

中文关键词：丙烷催化燃烧;MnOx;CeO2;焙烧温度;氧化还原性能

外文关键词：propane combustion;MnOx;CeO2;calcination temperature;redox property

摘要：采用共沉淀法制备了一系列具有不同Ce/Mn摩尔比的Mn-Ce复合氧化物催化剂。结果表明:铈的引入能显著提高MnO_x催化剂对丙烷燃烧的催化活性,并且当Ce/Mn摩尔比为0.2以及焙烧温度为400℃时制备得到的催化剂具有最高的催化活性。进一步研究发现,焙烧温度会显著影响MnO_x氧化物的物相结构和催化活性。而Ce的引入改变了MnO_x催化剂在相同焙烧温度下的物相组成,提高了催化剂表面活性氧的比例和氧化还原性能,从而增强了MnO_x催化剂的丙烷燃烧性能。
A series of Mn-Ce composite oxide catalysts with different Ce/Mn molar ratio were prepared by co-precipitation method.The results showed that ceria dopping can significantly improve the catalytic activity of MnOxcatalysts for propane combustion.When the Ce/Mn molar ratio was 0.2 and the calcination temperature was 400℃,the catalyst exhibited the highest catalytic activity.The characterization results revealed that calcination temperature can obviously affect the phase of pure MnOx catalyst and their catalytic activities for propane combustion.However,the incorporation of Ce can change the phase of the MnOxcatalyst calcined at the same temperature,leading to the increase in the active oxygen species on the catalyst surface and the enhancement of the redox properties.Consequently,Mn-Ce composite oxide catalysts exhibited the higher catalytic activity for propane combustion than that of pure MnOxcatalyst.