Performance of Co/MgO catalyst for CO_2 reforming of toluene as a model compound of tar derived from biomass gasification  

作　　者：Xiuxiu Bao Meng Kong Wen Lu Jinhua Fei Xiaoming Zheng 

机构地区：[1]Institute of Catalysis, Key Lab of Applied Chemistry of Zhejiang Province, Zhejiang University

出　　处：《Journal of Energy Chemistry》2014年第6期795-800,共6页能源化学（英文版）

基　　金：supported by the National Basic Research Program of China(2013CB228104);the Hi-Tech Research and Development Program of China(2007AA05Z415)

摘　　要：Catalytic performances of the CO2 reforming of toluene on Co/MgO catalysts with different cobalt loadings were evaluated in a fluidized-bed reactor. The results showed that the conversion of toluene and the stability of Co/MgO increased, but the apparent reaction rate decreased at the initial stage with increasing the amount of metallic Co formed from the reduction of Co/MgO catalysts at 700 ~C. The deactivation of Co/MgO catalysts was mainly resulted from that a part of the metallic Co was oxidized by CO2 and could not be re-reduced by H2 at reaction temperature. Therefore, the excess metallic Co on the higher Co loading catalysts was beneficial to the catalyst stability.Catalytic performances of the CO2 reforming of toluene on Co/MgO catalysts with different cobalt loadings were evaluated in a fluidized-bed reactor. The results showed that the conversion of toluene and the stability of Co/MgO increased, but the apparent reaction rate decreased at the initial stage with increasing the amount of metallic Co formed from the reduction of Co/MgO catalysts at 700 ~C. The deactivation of Co/MgO catalysts was mainly resulted from that a part of the metallic Co was oxidized by CO2 and could not be re-reduced by H2 at reaction temperature. Therefore, the excess metallic Co on the higher Co loading catalysts was beneficial to the catalyst stability.

关 键 词：cobalt catalyst MAGNESIA carbon dioxide reforming TOLUENE BIOMASS TAR 

分 类 号：O621.251[理学—有机化学]