微波法合成含磷MCM-41分子筛及催化性能研究  

STUDY ON THE SYNTHESIS OF MCM-41 CONTAINING P AND ITS CATALYTIC PERFORMANCE

作　　者：李凤艳[1] 刘欣然[1] 崔苗[2] 孙艳茹[2] 

机构地区：[1]北京石油化工学院,北京102617 [2]北京化工大学

出　　处：《石油炼制与化工》2009年第5期33-37,共5页Petroleum Processing and Petrochemicals

基　　金：国家重点基础研究发展规划项目(2003CB615802)资助

摘　　要：采用微波法合成了含磷MCM-41分子筛,并运用XRD,SEM,NH3-TPD,BET,NMR手段对合成的分子筛进行表征。结果表明,该分子筛主要有弱酸和中强酸中心,无强酸中心,酸量为0.349～0.553mmol/g;磷原子已经成功进入了分子筛的骨架结构。分别选用1,3,5-三异丙基苯和正十四烷作为反应物,使用自动微反装置,对分子筛进行催化活性的评价。结果表明,采用含磷MCM-41分子筛为催化剂,1,3,5-三异丙基苯的转化率为87.1%,正十四烷的转化率为56.2%,均高于MCM-41分子筛为催化剂时的转化率。MCM-41 molecular sieve containing P was synthesized by microwave radiation and characterized by XRD, SEM, NH3-TPD, N2 adsorption and NMR. Results showed that said molecular sieve mainly possessed weak acid sites and medium strong acid sites without strong acid sites, the total acidity was among 0. 349-0. 553 mmol/g. The ^31p MAS NMR data suggested that phosphorus atoms were successfully incorporated into the framework of MCM-41. The catalytic performance of the MCM-41 containing P was evaluated by micro reactor using 1, 3, 5-triisopropylbenzene and n-tetradecane as reactants. Test results showed that compared with MCM-41, MCM-41 containing P exhibited higher catalytic activity,its conversion of 1,3,5-triisopropylbenzene was 87.1 % and conversion of n-tetradecane was 56.2%.

关 键 词：MCM-41 磷 分子筛 表征 1 3 5-三异丙基苯 正十四烷 

分 类 号：O643.36[理学—物理化学]