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LaCoO3对H2 S选择氧化性能的影响

Xin-lei YU,Wei-tong PAN,Rui GAO,De-zhi GAO,Xia LIU,Zheng-hua DAI,Guang-suo YU,Fu-chen WANG

Journal of Fuel Chemistry and Technology（2019）

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Abstract
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,H2 S的转化率达到96.10％,硫选择性为93.77％.
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