钾离子对一步法制甲硫醇钼基催化剂的影响

doi:10.16085/j.issn.1000-6613.2017-1694

化工进展 ›› 2018, Vol. 37 ›› Issue (07): 2644-2648.DOI: 10.16085/j.issn.1000-6613.2017-1694

钾离子对一步法制甲硫醇钼基催化剂的影响

刘攀, 陆继长, 许志志, 刘江平, 余杰, 罗永明

昆明理工大学环境科学与工程学院, 云南昆明 650500

收稿日期:2017-08-11 修回日期:2017-12-12 出版日期:2018-07-05 发布日期:2018-07-05
通讯作者: 罗永明,博士,教授。
作者简介:刘攀(1994-),男,硕士研究生。E-mail:953401258@qq.com
基金资助:
国家自然科学基金项目（U1402233，21267011，21367015）。

Effect of K cation on the one-step synthesis of CH₃SH using molybdenum based catalysts

LIU Pan, LU Jichang, XU Zhizhi, LIU Jiangping, YU Jie, LUO Yongming

Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, Yunan, China

Received:2017-08-11 Revised:2017-12-12 Online:2018-07-05 Published:2018-07-05

摘要/Abstract

摘要： 选用具有高比表面积的介孔分子筛SBA-15作为载体，采用等体积浸渍法制备Mo/SBA-15和KMo/SBA-15催化剂并用于一步法合成甲硫醇，并采用氮气吸脱附（BET）、X射线衍射分析（XRD）、拉曼光谱（Raman）、X射线光电子能谱分析（XPS）等进行表征，研究钾离子的添加对催化合成甲硫醇的影响。结果表明，K的添加大幅提升了Mo/SBA-15的甲硫醇选择性和CO的转化率；在高浓度H₂S环境下，KMo/SBA-15催化剂上甲硫醇选择性达到了62%，高于目前文献报道的催化剂。Raman、XPS表征结果表明，添加K的催化剂上硫化后加氢脱硫活性相MoS₂含量增多。

关键词: 加氢脱硫, 合成气, 钼基催化剂, 钾离子

Abstract: Molybdenum based catalysts of Mo/SBA-15 and KMo/SBA-15 were prepared via the incipient-wetness impregnation method, with high surface area SBA-15 as the support. N2 adsorption-desorption, XRD, Raman and XPS were carried out to investigate the effect of K on the CH₃SH synthesis progress. Dynamics study showed that the CO conversion and CH₃SH selectivity were greatly improved when K was added, and the selectivity of CH₃SH over KMo/SBA-15 reached 62% under high H₂S concentration, higher than other reported catalysts. Based on the Raman and XPS results, the MoS₂ content increased with the addition of K.

Key words: hydrodesulfurization (HDS), syngas, molybdenum based catalysts, potassium

中图分类号:

O643

刘攀, 陆继长, 许志志, 刘江平, 余杰, 罗永明. 钾离子对一步法制甲硫醇钼基催化剂的影响[J]. 化工进展, 2018, 37(07): 2644-2648.

LIU Pan, LU Jichang, XU Zhizhi, LIU Jiangping, YU Jie, LUO Yongming. Effect of K cation on the one-step synthesis of CH₃SH using molybdenum based catalysts[J]. Chemical Industry and Engineering Progress, 2018, 37(07): 2644-2648.

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钾离子对一步法制甲硫醇钼基催化剂的影响

Effect of K cation on the one-step synthesis of CH₃SH using molybdenum based catalysts

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钾离子对一步法制甲硫醇钼基催化剂的影响

Effect of K cation on the one-step synthesis of CH3SH using molybdenum based catalysts

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Effect of K cation on the one-step synthesis of CH₃SH using molybdenum based catalysts