不同硫化物在改性Y分子筛上的选择性吸附脱硫性能及机理  

SELECTIVE ADSORPTION DESULFURIZATION PERFORMANCE AND MECHANISM OF SULFUR COMPOUNDS OVER MODIFIED Y ZEOLITE

作　　者：段林海[1] 孟秀红[1,2] 施岩[1,2] 鞠秀芳[1] 靳玲玲[1] 徐静[1] 陈晓陆[1] 宋丽娟[1] 

机构地区：[1]辽宁石油化工大学辽宁省石油化工重点实验室,辽宁抚顺113001 [2]中国石油大学化学化工学院,山东青岛266555

出　　处：《石油学报（石油加工）》2009年第A02期70-76,共7页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家自然科学基金项目(20476042和20776064);国家"973"计划项目(2007CB216403)资助

摘　　要：用离子交换的方法制备了Cu(Ⅰ)Y、Ce(Ⅲ)Y、Ni(Ⅱ)Y分子筛,并采用XRD、TEM、XPS、ICP、FT-IR等手段对其进行了表征。采用傅里叶变换红外(FT-IR)、分子模拟、固定床吸附和智能重量分析仪(IGA)相结合的方法研究了噻吩类硫化物在其上的选择性吸附性能及机理。结果表明,噻吩类硫化物在改性Y分子筛上的选择性吸附性能取决于其与分子筛吸附剂的作用模式和吸附构型,而与其吸附的空间位阻关联不大。同时分子筛吸附剂表面酸性,尤其是质子酸中心对噻吩类硫化物的选择性吸附脱硫性能有很重要的作用。Cu（ Ⅰ ）Y.Ce（Ⅲ） Y.Ni（ Ⅱ ）Y zeolites were prepared by liquid phase ion exchange method and characterized by XRD, TEM, XPS, ICP. The selective adsorption behavior and mechanism of thiophene-type compounds over modified Y zeolite were investigated by Fourier transform infrared （FT-IR）, intelligent gravimetric analyzer （IGA） and molecular simulation. The results showed that the selective adsorption performance of thiophene-type compounds over modified Y zeolite depended on the interaction, adsorption configuration between them and sorbent and surface acidity of the modified Y zeolite rather than their steric hindrances. The surface acidity of the modified Y zeolite, especially the protonic acid, played an important role on the selective adsorption desulfurization.

关 键 词：硫化物 选择性吸附脱硫 离子交换 FT-IR 分子模拟 

分 类 号：TE626.2[石油与天然气工程—油气加工工程]