噻吩在CeY分子筛上的吸附行为  

Absorption behaviors of thiophene on CeY zeolites

作　　者：韩春玉[1] 刘道胜[1] 宋丽娟[1] 张晓彤[1] 孙兆林[1] 

机构地区：[1]辽宁石油化工大学化学与材料科学学院,辽宁抚顺113001

出　　处：《工业催化》2008年第6期27-30,共4页Industrial Catalysis

基　　金：国家自然科学基金资助项目(20476042)

摘　　要：采用智能质量分析(IGA)和程序升温脱附和微分程序升温脱附(TPD/DTPD)法研究了噻吩在CeY上的热脱附行为和吸附热力学,并和NaY进行对比。发现噻吩在CeY分子筛上有很好的选择性吸附,噻吩和CeY分子筛之间的吸附主要是金属离子和硫原子的化学键力作用,而在NaY上的吸附作用属于分子间力作用。吸附热力学也证明了噻吩在CeY上既有物理吸附作用也有强的化学吸附作用。The absorption thermodynamics and thermal desorption behaviors of thiophene on CeY zeolites were investigated by intelligence gravimetrie analysis （IGA）, temperature programmed desorption and differential temperature programmed desorption （TPD/DTPD）, and compared with those on NaY. It was found that thiophene exhibited good selective adsorption on CeY. TPD/DTPD results indicated that thiophene was adsorbed on CeY by chemical bond between metal ions and sulfur atoms, while on NaY by intermoleeular force. The absorption thermodynamics proved that there were both physical and chemical absorption of thiophene on CeY.

关 键 词：催化反应工程 噻吩吸附 CeY分子筛 智能质量分析(IGA) 程序升温脱附(TPD) 微分程序升温脱附(DTPD) 

分 类 号：O643.1[理学—物理化学] TQ426.95[理学—化学]