| 烯烃对CeY分子筛脱硫效果影响的红外光谱研究 |
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| 引用本文： | 张晓彤,徐静,宋丽娟,靳玲玲,孙兆林.烯烃对CeY分子筛脱硫效果影响的红外光谱研究[J].燃料化学学报,2010,38(1):91-95. |
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| 作者姓名： | 张晓彤 徐静 宋丽娟 靳玲玲 孙兆林 |
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| 作者单位： | Liaoning Key Laboratory of Petrochemical Engineering, Liaoning Shihua University, Fushun 113001, China |
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| 基金项目： | 国家自然科学基金，国家重点基础研究发展规划 |
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| 摘 要： | 研究了不同硫化物在CeY上吸附后的红外光谱,总结了吸附作用机理;以噻吩作为模拟油中的硫化物,根据红外光谱信息研究烯烃对CeY分子筛选择性吸附脱硫性能的影响。结果表明,不同硫化物与CeY分子筛的作用方式不尽相同,但都在分子筛表面发生催化反应;CeY分子筛阳离子和烯烃的双键发生了σ—π络合,从而跟与CeY存在SM作用的噻吩形成了竞争吸附。噻吩存在下,烯烃在CeY表面发生了更为严重的催化反应,生成了大分子聚合物,占据吸附剂活性位的同时堵塞了分子筛表面孔道,导致CeY分子筛的脱硫性能显著降低。
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| 关 键 词： | 分子筛 选择性吸附 脱硫机理 红外光谱 |
| 收稿时间： | 2009-03-19 |
| 修稿时间： | 2009-07-24 |
FT-IR studies on the effect of olefins on desulfurization of a CeY zeolite |
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| ZHANG Xiao-tong,XU Jing,SONG Li-juan,JIN Ling-ling,SUN Zhao-lin.FT-IR studies on the effect of olefins on desulfurization of a CeY zeolite[J].Journal of Fuel Chemistry and Technology,2010,38(1):91-95. |
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| Authors: | ZHANG Xiao-tong XU Jing SONG Li-juan JIN Ling-ling SUN Zhao-lin |
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| Institution: | ZHANG Xiao-tong,XU Jing,SONG Li-juan,JIN Ling-ling,SUN Zhao-lin(Liaoning Key Laboratory of Petrochemical Engineering,Liaoning Shihua University,Fushun 113001,China) |
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| Abstract: | FT-IR spectra of different kinds of sulfides adsorbed on CeY zeolite were collected.Based on that,the effect of olefins(with 1-octene,1,5-hexadiene,and cyclohexene as model compounds) in FCC gasoline on the desulfurization performance of CeY were investigated.The results revealed that a ring-opening catalytic reaction occurs after the sulfides are adsorbed.As compared with alkyl thiophenes,benzo thiophenes are more stable.The strong interactions between the double bond in alkenes with the Ce cation in CeY l... |
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| Keywords: | zeolite selective adsorption desulfurization mechanism FT-IR |
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