摘要
反应过程中生成的重质副产物积炭堵塞孔道是造成酸性分子筛催化剂失活的主要因素。影响积炭的因素有催化剂的孔道结构、酸性以及操作条件。对分子筛催化剂积炭失活机理、积炭表征技术、影响因素和抑制措施进行了综述,并介绍了一种积炭分离方法,对分子筛催化剂积炭研究的发展趋势进行了分析。
The deactivation of molecular sieve catalysts is mainly due to the blockage of some pores and channels of the catalysts by heavy secondary reaction organic compounds called coke deposition, which were produced during the reaction process. The main influencing factors of coke deposition are the pore structure and acidic sites of the catalysts and the operating conditions. The formation mechanism and the characterization techniques of coke deposits, the influencing factors and restraining measures of coke deposit formation were summarized. A separation method for coke deposits was introduced. The research trends of coking deactivation of molecular sieve catalysts were also analyzed.
出处
《工业催化》
CAS
2011年第12期15-20,共6页
Industrial Catalysis
关键词
催化剂工程
分子筛催化剂
积炭
失活
catalyst engineering
molecular sieve catalyst
coke deposition
deactivation
