SAPO-18分子筛合成、改性及应用研究进展  

PROGRESS IN SAPO-18 MOLECULAR SIEVE SYNTHESIS,MODIFICATION AND APPLICATION

作　　者：张岩[1] 李渊[1] 赵飞[1] 谭小耀[1] 

机构地区：[1]天津工业大学环境与化学工程学院,天津300387

出　　处：《精细石油化工》2016年第6期59-63,共5页Speciality Petrochemicals

基　　金：国家自然科学基金资助项目(21176187);天津市科技特派员项目(14JCTPJC00559)

摘　　要：在MTO过程中,SAPO-34虽然应用广泛,但是容易失活,而SAPO-18则表现出较高的双烯收率和较高的稳定性。为此,简述了SAPO-18的合成方法、改性及其对MTO反应性能的影响,介绍了SAPO-18近年来的进展情况。指出:结合MTO过程的产物和中间体的成分及含量,通过SAPO-34和SAPO-18两种分子筛在组成、孔结构、硅原子分布等方面的比对,深刻阐明在磷硅铝分子筛上的甲醇转化机理是今后研究的重点方向;另外,新的改性方法、多级孔结构的引入对分子筛的催化性能的影响,以及分子筛在丁烯裂解和脱硝等方面的应用将是近期研究的热点。In the MTO process,although SAPO-34 had been widely used,it was easy to inactivate,however SAPO-18 showed a higher diene yields and high stability.This paper described the synthesis of SAPO-18,modification and its influence on the MTO performance.By comparing the composition,the pore structure,the silicon atom distribution of SAPO-34 and SAPO-18,combined the composition and content of MTO process＇ s products and intermediates,expounded profoundly that methanol conversion mechanism was the focus of future research directions on phosphorus aluminosilicate zeolite;Besides,The new modification method,the introduction of multi-stage pore structure on the catalytic properties of zeolite,and molecular sieves used in butene cracking and denitration,etc.would be the recent research focus.

关 键 词：SAPO-18 合成 改性 选择性 寿命 

分 类 号：O643.36[理学—物理化学]