Hydrothermal treatment on ZSM-5 extrudates catalyst for methanol to propylene reaction: Finely tuning the acidic property

Hydrothermal treatment on ZSM-5 extrudates catalyst for methanol to propylene reaction: Finely tuning the acidic property

Type	Journal Article
Author	Shaolong Zhang
Author	Yanjun Gong
URL	http://www.sciencedirect.com/science/article/pii/S0378382014003774
Volume	129
Pages	130-138
Publication	Fuel Processing Technology
Date	January 2015
Abstract	Researchers hydrothermally treated ZSM-5 powder and extrudates by varying temperature and time. They characterized the  materials in the methanol to propylene (MTP) process. They compatred changes in textural properties, focusing on the nature, number, and ratio of Brønsted (B) and Lewis (L) acid sites. The extrudates catalyst contained a large number of acid sites, especially the L acid sites and hierarchical porous structure due to the addition of the alumina binder. The number of acid sites and the B/L ratio could be finely adjusted by proper hydrothermal treatment. The hydrothermal treatment parameter on the extrudates was observed to have a significant effect on its MTP catalytic performance and product distribution.