Nonionic polymer and amino acid-assisted synthesis of ZSM-5 nanocrystals and their catalytic application in the alkylation of 2-methylnaphthalene

Abstract

ZSM-5 nanocrystals were synthesized by introducing l-lysine and polyvinylpyrrolidone, via a temperature-varying two-step crystallization method, which may have potential application in the catalytic alkylation of 2-methylnaphthalene with methanol.

Morphology and Microstructural Optimization of Zeolite Crystals Utilizing Polymer Growth Modifiers for Enhanced Catalytic Application

“…It is well known that the catalytic properties of zeolite catalysts depend on not only their pore openings and cage/intersection cavities but also their various physicochemical properties, including morphology, crystal size, phase purity, composition, and acidity/redox properties [6][7][8]. Through the optimization of synthesis methods and parameters, these physicochemical properties could be modulated to a certain extent by adjusting the morphology and microstructural characteristics of the zeolite crystals, making them well fit for the requirement of a specific catalytic reaction [9][10][11][12][13][14]. Among the various modulation strategies, the introduction of so-called "zeolite growth modifiers" (ZGMs) has shown great advantages in precisely modulating of the morphology and microstructure of various zeolite crystals, with remarkable effects in terms of enhancing their catalytic activity, selectivity, and/or stability for a broad range of industrially important catalytic processes [10,[15][16][17][18][19][20].…”