固态法制备含钼组分碱金属离子Y分子筛性质的比较  

Introduction of Alkali Cations and Molybdenum Component into Y-Zeolite and its Properties

作　　者：叶树集[1] 姜明[2] 陈鸣才[1] 

机构地区：[1]中国科学院广州化学研究所,广州510650 [2]中国科学技术大学化学物理系,合肥230026

出　　处：《广州化学》1999年第3期16-19,共4页Guangzhou Chemistry

摘　　要：利用固态离子交换法制备含钼组分碱金属离子Y分子筛 ,红外光谱和X射线衍射表明碱金属离子的交换度随离子半径增大而变小。含钼组分分子筛催化剂显现出很高的合成醇选择性 ,且随碱金属离子碱性增加 ,高碳醇比例增加。The introduction of molybdenum component into the structure of Y-zeolite was accomplished via a solid-state reaction of MoO 3 with MHY(M=Li,K,Cs) under a reducing atmosphere of H 2 saturated with water vapor.MHY were also prepared by solid-state ion exchange between NH 4Y and respective chlorides in flowing N 2.It was found by infrared spectroscopy and X-ray diffraction technique that X-ray diffraction gives rise to a minor amount of amorphous phase and the degrees of exchange decrease with the sizes of alkali cations .The properties of (M,Mo)Y upon sulfidation are different from those of K-Mo/γAl 2O 3,the former being of much higher selectivity for C 2+ OH alcohol formation in the hydrogenation of CO as the number and the size of alkali cations.

关 键 词：固态离子交换 钼组分 碱金属 Y分子筛 催化剂 

分 类 号：TQ426.7[化学工程] O643.36[理学—物理化学]