Y型分子筛微波法改性及其选择性吸附脱硫性能  

Modification of Y zeolite by microwave method and its behaviors in selective adsorptive desulfurization

作　　者：李秀奇[1] 唐克[2] 段林海[2] 李菲菲[2] 宋丽娟[1] 

机构地区：[1]辽宁石油化工大学石油化工学院,辽宁抚顺113001 [2]兰州大学化学化工学院,甘肃兰州730000

出　　处：《工业催化》2007年第4期1-5,共5页Industrial Catalysis

基　　金：国家自然科学基金资助项目(20476042;20546003)

摘　　要：通过微波法进行液态离子交换对NaY分子筛进行改性,采用静态实验对不同吸附剂的脱硫性能进行了考察,筛选出Ce(Ⅳ)-Y吸附性能最好。采用固定床技术对Ce(Ⅳ)-Y的吸附脱硫能力进行了研究,同时运用程序升温脱附法(TPD)和频率响应方法(FR)对吸附脱硫机理进行了进一步探讨。采用微波法进行离子交换改性后的Ce(Ⅳ)-Y分子筛的离子交换度与传统水热法比较有明显提高,吸附容量较NaY有显著提高。NaY zeolite was modified by liquid-phase ion-exchange under microwave and its behaviors in selective adsorptive desulfurization of fuel were investigated. Ce （ Ⅳ ）-Y zeolite exhibited the best behaviota. Mechanism for adsorptive removal of thiophene over Ce （ Ⅳ ）-Y was studied by temperature-pro- grammed desorption （TPD） and frequency response （FR） techniques, Ce （ Ⅳ ）-Y zeolite prepared by microwave method showed remarkably higher ion-exchange degree than that of NaY zeolite prepared by traditional hydrothermal method, with enhanced sulfur adsorption capacity.

关 键 词：Y型分子筛 微波 离子交换 程序升温脱附 频率响应 选择性吸附脱硫 

分 类 号：TQ426.7[化学工程] TE624.431[石油与天然气工程—油气加工工程]