| LaCoO3对H2S选择氧化性能的影响 |
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| 引用本文： | 喻昕蕾,潘伟童,高瑞,高德志,刘霞,代正华,于广锁,王辅臣.LaCoO3对H2S选择氧化性能的影响[J].燃料化学学报,2019,47(8):973-979. |
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| 作者姓名： | 喻昕蕾 潘伟童 高瑞 高德志 刘霞 代正华 于广锁 王辅臣 |
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| 作者单位： | Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, East China University of Science and Technology, Shanghai 200237, China |
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| 基金项目： | 国家自然科学基金（21776086）资助 |
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| 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H2S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%。
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| 关 键 词： | LaCoO3 H2S 选择性氧化 |
| 收稿时间： | 2019-04-25 |
Selective oxidation of H2S over the LaCoO3 catalyst |
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| YU Xin-lei,PAN Wei-tong,GAO Rui,GAO De-zhi,LIU Xia,DAI Zheng-hua,YU Guang-suo,WANG Fu-chen.Selective oxidation of H2S over the LaCoO3 catalyst[J].Journal of Fuel Chemistry and Technology,2019,47(8):973-979. |
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| Authors: | YU Xin-lei PAN Wei-tong GAO Rui GAO De-zhi LIU Xia DAI Zheng-hua YU Guang-suo WANG Fu-chen |
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| Abstract: | 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. |
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| Keywords: | LaCoO3 H2S selective oxidation |
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