화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.24, No.4, 592-595, July, 2007
DOI10.1007/s11814-007-0008-8  Export Citation
Selective oxidation of hydrogen sulfide over LaCoO3 and LaSrCoO4 mixed oxides
Xiaomao Yang, Dae-Won Park1, †, and Moon-Il Kim1
  • Institute of Materials, Jiangxi University of Finance and Economics, Nanchang, China
  • 1Division of Chemical Engineering, Pusan National University, Busan 609-735, Korea
E-mail:
Perovskite LaCoO3 and perovskite-like LaSrCoO4 mixed oxides were prepared by polyglycol gel method, and their catalytic performance was compared for the selective oxidation of hydrogen sulfide in a stream containing excess amount of ammonia and water for the first time. These samples were investigated by using XRD, BET, O2-TPD and XPS. The catalytic activity and the selectivity to solid products (ammonium thiosulfate and elemental sulfur) of LaCoO3 were better than those of LaSrCoO4, and this is explained in terms surface contents of oxygen and cobalt, oxidation state of cobalt, and BET surface area.
Keywords:Selective Oxidation;H2S;LaCoO3;LaSrCoO4;Mixed Oxide
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