%0 Journal Article
%A Qi Liu
%A Gao Cheng
%A Ming Sun
%A Weixiong Yu
%A Xiaohong
%A Zeng
%A Shichang Tang
%A Yongfeng li
%A Lin Yu
%T A facile preparation of hausmannite as a high-performance catalyst for toluene combustion
%D 2022
%R 10.1016/j.cjche.2021.02.026
%J Chinese Journal of Chemical Engineering
%P 392-401
%V 44
%N 4
%X Mesoporous transition metal oxide catalysts are well-used in the elimination of volatile organic compounds. In this study, we developed an efficient method for the preparation of mesoporous-Mn3O4 (m-Mn3O4) without the use of templates or surfactants. In this method, KCl protects oxygen defects on the surface of fresh Mn3O4 crystallites. m-Mn3O4 shows higher ameliorative catalytic activity than bulk-Mn3O4 (b-Mn3O4) and calcined-Mn3O4 (c-Mn3O4), achieving toluene catalytic oxidation of T10 and T90 (the temperature at a conversion rate of about 10% and 90%) at 191 ℃ and 230 ℃, respectively (WHSV = 40,000 ml·g-1·h-1). Based on various characterizations, the prepared m-Mn3O4 has large specific surface area and abundant oxygen defects, and thus can provide more surface active sites, which give it superior toluene combustion activity.
%U https://cjche.cip.com.cn/EN/10.1016/j.cjche.2021.02.026