| 汽油在钾修饰MCM-22分子筛上的烷基化脱硫 |
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| 引用本文： | 郭晓野,张泽凯,刘盛林,李玉宁,戴洪义,徐龙伢.汽油在钾修饰MCM-22分子筛上的烷基化脱硫[J].工业催化,2008,16(6):31-34. |
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| 作者姓名： | 郭晓野 张泽凯 刘盛林 李玉宁 戴洪义 徐龙伢 |
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| 作者单位： | 1.大连工业大学，辽宁 大连116100; 2.中科院大连化学物理研究所，辽宁 大连116023 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)
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中国科学院基金 |
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| 摘 要： | 在固定床上考察了钾修饰的MCM-22分子筛上模拟催化裂化汽油中的噻吩烷基化脱硫。结果表明，催化剂的强酸有利于噻吩烷基化脱硫反应活性。钾处理显著降低了MCM-22分子筛的强酸数量，对弱酸的影响则相对较小。随着负载钾质量分数的增加，催化剂反应活性显著降低，而噻吩烷基化反应选择性却存在一最佳值，另外，催化剂的稳定性可以得到一定程度改善。
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| 关 键 词： | 催化化学 噻吩硫 汽油脱硫 MCM-22分子筛催化剂 烷基化 钾修饰 |
| 文章编号： | 1008-1143(2006)06-0031-04 |
| 修稿时间： | 2007年1月22日 |
Alkylation desulfurization of thiophene in gasoline over potassium modified MCM-22 zeolites |
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| GUO Xiaoye,ZHANG Zekai,LIU Shenglin,LI Yuning,DAI Hongyi,XU Longya.Alkylation desulfurization of thiophene in gasoline over potassium modified MCM-22 zeolites[J].Industrial Catalysis,2008,16(6):31-34. |
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| Authors: | GUO Xiaoye ZHANG Zekai LIU Shenglin LI Yuning DAI Hongyi XU Longya |
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| Affiliation: | 1.Dalian Polytechnic University, Dalian 116100, Liaoning,China; 2.CAS Dalian Institute of Chemical Physics, Dalian 116023, Liaoning,China |
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| Abstract: | Olefin alkylation of thiophenic sulfur (OATS) in FCC gasoline over potassium modified MCM22 zeolite was investigated in a fixed bed flow reactor. The results indicated that strong acid sites of the MCM22 zeolite favored its OATS activity. Potassium modification notably decreased strong acid sites of the HMCM22, with less influence on its weak acid sites. OATS catalytic activity of the K/HMCM22 zeolite declined remarkably with K loadings. MCM22 zeolite modified by proper amount of potassium exhibited maximum OATS selectivity. Activity stability of the zeolite was improved by potassium modification as well. |
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| Keywords: | thiophenic sulfur gasoline desulfurization MCM 22 zeolite catalyst olefin alkylation potassium modification catalytic chemistry |
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