文献类型：期刊文献

中文题名：LaCoO3对H2S选择氧化性能的影响

英文题名：Selective oxidation of H2S over the LaCoO3 catalyst

作者：喻昕蕾[1];潘伟童[1];高瑞[1];高德志[1];刘霞[1];代正华[1];于广锁[1];王辅臣[1]

机构：[1]华东理工大学煤气化及能源化工教育部重点实验室

年份：2019

卷号：47

期号：8

起止页码：973

中文期刊名：燃料化学学报

外文期刊名：Journal of Fuel Chemistry and Technology

收录：CSTPCD;;EI(收录号：20194607689588);Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

基金：国家自然科学基金(21776086)资助~~

语种：中文

中文关键词：LaCoO3;H2S;选择性氧化

外文关键词：LaCoO3;H2S;selective oxidation

摘要：使用溶胶-凝胶法制备了LaCoO3催化剂,采用XRD、BET和XPS等方式对催化剂进行了表征,考察了该催化剂制备过程中煅烧温度、表面活性剂PEG-6000和PEG-20000含量对其H2 S选择氧化制硫磺反应催化活性的影响。结果表明,表面活性剂PEG-6000及PEG-20000的添加能明显提高LaCoO3的催化活性。0.02 mol La(NO3)3+0.02mol Co(NO3)2溶液中添加0.30 g PEG-20000、煅烧温度为650℃时所制备的LaCoO3催化活性最好;在最佳反应温度260℃下,H2S的转化率达到96.10%,硫选择性为93.77%。
A series of LaCoO3 catalysts were prepared by sol-gel method and characterized by XRD,BET and XPS;the effect of calcination temperature and content of surfactant PEG-6000 and PEG-20000 on the catalytic activity of LaCoO3 in the selective oxidation of H2S to sulfur was investigated.The results illustrated that adding surfactant PEG-6000 and PEG-20000 can significantly improve the catalytic activity of LaCoO3 in H2S oxidation;the LaCoO3 catalyst prepared by adding 0.30 g PEG-20000 in the solution of 0.02 mol La(NO3)3+0.02 mol Co(NO3)2 and calcination at 650℃exhibits the highest activity in H2S oxidation.Over this catalyst and under the optimum reaction temperature of 260℃,the conversion of H2S reaches 96.10%,with a selectivity of 93.77%to sulfur.