文献类型：期刊文献

英文题名：Catalytic combustion of 1,2-dichlorobenzene at low temperature over Mn-modified Co3O4 catalysts

作者：Cai, Ting[1];Huang, Hao[1];Deng, Wei[1];Dai, Qiguang[1];Liu, Wei[2];Wang, Xingyi[1]

机构：[1]E China Univ Sci & Technol, Res Inst Ind Catalysis, Adv Mat Lab, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Shanghai Inst Appl Phys Chinese, Shanghai 201800, Peoples R China

年份：2015

卷号：166

起止页码：393

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY

收录：;EI(收录号：20150100397990);WOS:【SCI-EXPANDED(收录号:WOS:000348753400044)】；

基金：This research was supported by Development Program for National Natural Science Foundation of China (Nos. 21277047, 21477036 and 21307033), Commission of Science and Technology of Shanghai Municipality (No. 11JC1402900), and the Opening Project of Key Laboratory of Nuclear Radiation and Nuclear Energy Technology, Chinese Academy of Sciences (NRNE-OP2012001).

语种：英文

外文关键词：1,2-Dichlorobenzene; Catalytic combustion; Manganese; Cobalt; Spinel

摘要：Mn-modified Co3O4 catalysts with spinel structure with various Co/Mn ratios prepared by co-precipitation method were characterized by XRD, Raman, TEM, HRTEM, XPS and H-2-TPR, and used in catalytic combustion of 1,2-dichlorobenzene (o-DCB), as a model of dioxins. The results revealed that the catalyst with Co/Mn ratio of nine presented the highest activity with T-90 of 347 degrees C and high stability at least 35h at 3000 ppm o-DCB and 10% O-2 at GHSV = 15,000 h(-1). High activity could be ascribed to synergetic effect between activation of o-DCB on Co2+ sites and oxidation by surface active oxygen from Co3O4 nano-particles. Additionally, 1,2,4-trichloro-benzene was formed over Co3O4 to a significant extent through the reaction of adsorbed Cl species with o-DCB, while the incorporation of Mn in Co3O4 can effectively retard chlorination of o-DCB. A possible reaction pathway for the catalytic combustion of o-DCB on CoxMny catalysts was also investigated by in situ FTIR spectroscopy. (C) 2014 Published by Elsevier B.V.