Radicalized seeds-assist route for the rapid synthesis of zeolite ECR-1 in the absence of organic templates

Abstract

Several different types of seeds have been introduced into the organic template-free synthesis of zeolite ECR-1. The corresponding crystallization process was affected by the structural properties of added seeds. A radicalized seeds-assist route for the rapid synthesis of zeolite ECR-1 in the absence of organic templates is demonstrated. The radicalized zeolite ECR-1 seeds can accelerate the induction and growth period of crystallization simultaneously. The crystalized zeolite ECR-1 products were characterized by X-ray diffraction, scanning electron microscopy, X-ray fluorescence, nitrogen adsorption-desorption and temperature-programmed desorption of ammonia. Compared with those synthesized in the presence of normal seeds, the zeolite ECR-1 products obtained via radicalized seeds-assist route exhibited higher crystallinity, consumed shorter crystallization time and presented a better catalytic performance in iso-butane cracking reaction.