Highly Selective Methylation of Ethylene to Propylene within the Confined Side Pockets of Mordenite Zeolite.

ABSTRACT: Ethylene methylation with C1 reagents provides a viable route for propylene production and enables flexible adjustment of olefin output ratios in industrial processes (e.g., naphtha steam cracking and methanol-to-olefins). However, this process faces the long-standing challenges of low propylene selectivity and rapid catalyst deactivation. Herein, a highly selective and stable catalyst for ethylene methylation to propylene was developed by precisely regulating the acid site distribution in mordenite (MOR) zeolite, where the acid sites in the 12-membered ring (12-MR) channels were passivated using pyridine, while those located in the confined 8-membered ring (8-MR) side pockets remained accessible. This spatial control of acid site distribution allowed the exclusive occurrence of ethylene m

SUBMITTER: Cheng D 

PROVIDER: S-EPMC12814175 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature