文献类型：期刊文献

英文题名：Simultaneous recovery of carbon and sulfur resources from reduction of CO2 with H2S using catalysts

作者：Su, Hui[1];Li, Yuyang[1];Li, Ping[1];Chen, Yongxiu[1];Zhang, Zhizhi[2];Fang, Xiangchen[2]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Sinopec, Fushun Res Inst Petr & Petrochem, Fushun 113001, Liaoning, Peoples R China

年份：2016

卷号：25

期号：1

起止页码：110

外文期刊名：JOURNAL OF ENERGY CHEMISTRY

收录：;EI(收录号：20161102084125);WOS:【SCI-EXPANDED(收录号:WOS:000373244400014)】；

基金：The authors are grateful for the financial supports from the Fushun Research Institute of Petroleum & Petrochemicals (no. KG12009), the Natural Science Foundation of China (no. 21276077), and the Fundamental Research Funds for Central Universities (no. WG1213011).

语种：英文

外文关键词：Carbon dioxide; Hydrogen sulfide; Simultaneous recovery; Reduction; Catalyst

摘要：An approach to the simultaneous reclamation of carbon and sulfur resources from CO2 and H2S has been proposed and effectively implemented with the aid of catalysts. A brief thermodynamic study reveals the potential of direct reduction of CO2 with H2S (15:15 mol% balanced with N-2) for selective production of CO and elemental sulfur. The experiments carried out in a fixed-bed flow reactor over the temperature range of 400-800 degrees C give evidence of the importance of the employment of catalysts. Both the conversions of the reactants and the selectivities of the target products can be substantially promoted over most catalysts studied. Nevertheless, little difference appears among their catalytic performance. The results also prove that the presence of CO2 can remarkably enhance H2S conversion and the sulfur yield in comparison with H2S direct decomposition. A longtime reaction test on MgO catalyst manifests its superior durability at high temperature (700 degrees C) and huge gas hourly space velocity (100,000 h(-1)). Free radicals initiated by catalysts are supposed to dominate the reactions between CO2 and H2S. (C) 2015 Science Press and Dalian Institute of Chemical Physics. All rights reserved.