Acid Properties of MCM-36 Molecular Sieve and its Catalytic Behavior in Benzene Alkylation with Propylene

CATEGORY: MOLECULAR SIEVES 
Acid Properties of MCM-36 Molecular Sieve and its Catalytic Behavior in Benzene Alkylation with Propylene

Type	Journal Article
Author	Fei Zhao
Author	Yu Zhang
URL	http://www.scientific.net/AMR.1015.434
Volume	1015
Pages	434-437
Publication	Advanced Materials Research
Date	8/2014
Abstract	Describes synthesis of pillared layered MCM-36 zeolite from pure MCM-22 precursor with polymeric silica as pillaring agent. Characterization results of acidic properties from FT-IR revealed a decrease in the amounts of Lewis acidic and Brønsted acidic. Researchers examined the catalytic behavior of pillared layered MCM-36 zeolite in benzene alkylation with propylene. They observed that pillared MCM-36 zeolite exhibits stable catalytic activity in a 200 hour time-on-stream measurement under a relatively high propylene velocity space. The excellent selectivity to cumene over MCM-36 appears to be due to the decrease in the amount of Brønsted acidity, while the improvement of the catalytic activity of MCM-36 is the result of the presence of a larger amount of structurally accessible acid sites caused by the increment of mesoporous volume in this material.