MTO催化剂中国专利技术进展(一)——ZSM-5系列分子筛  

Advances in Proprietary MTO Catalyst Technology in China(Ⅰ)——ZSM-5 Series Molecular Sieves

作　　者：史建公[1] 刘志坚[2] 张敏宏[1] 张毅[1] 赵桂良[1] 

机构地区：[1]中国石化催化剂北京燕山分公司,北京102400 [2]中国石化催化剂有限公司,北京100029

出　　处：《中外能源》2013年第8期70-75,共6页Sino-Global Energy

基　　金：中国石油化工股份有限公司科研经费资助项目;项目编号:411023

摘　　要：综述了关于MTO催化剂中国专利技术的进展情况。石油资源的短缺,导致甲醇/二甲醚制低碳烯烃催化剂及工艺(MTO)开发的步伐不断加快。到目前为止,国内外均已成功开发出多种不同的MTO工艺。MTO催化剂是MTO工艺能否长周期平稳运行的关键,到目前为止,能够用于MTO工艺的催化剂主要是ZSM-5和SAPO-34分子筛。ZSM-5分子筛催化剂的主要问题在于丙烯的选择性差,SAPO-34分子筛催化剂的主要问题是寿命短。提高MTO反应催化剂性能的较好途径在于采用不同分子筛进行复合。一是物理复合,如采用ZSM-5、SAPO-34、尤其是与具有大孔的拓扑结构为MWW的分子筛进行复合,探讨不同复合比例对反应性能的影响;二是在制备时,通过采用不同模板剂或混合模板剂,制备具有不同结构的复合分子筛混合物;三是在具有特定结构的分子筛上生长具有其他需要结构的分子筛。This article describes the advances in proprietary MTO catalyst technology in China.The tight supply of oil resources has led to an acceleration of the development of catalyst technology for producing low carbon olefin with methanol/dimethyl ether（MTO）.Many types of MTO technologies have been developed both within and outside of China.MTO catalysts are the key to a long,stable operation of MTO technology.To date,the main catalysts that can be used for MTO technology have been ZSM-5 and SAPO-34 molecular sieves.The main drawback of ZSM-5 molecular sieve is the poor selectivity of propylene and that of SAPO34 molecular sieve is its short life.A good way of improving the performance of MTO catalysts is to compound different molecular sieves.One option is to compound them physically,such as compounding ZSM-5 or SAPO-34 with molecular sieves with large pores and an MWW topological structure.This article analyzes the effect of different compounding ratios on reaction properties.The second option is to prepare composite molecular sieve admixtures with different structures by using different template agents or a hybrid template agent.The third option is to develop molecular sieves with desired structures on molecular sieves with specific structures.

关 键 词：MTO ZSM-5 SAPO-34 分子筛 专利进展 综述 

分 类 号：TQ424.25[化学工程]