4.7 Article

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

期刊

出版社

ELSEVIER
DOI: 10.1016/j.micromeso.2022.112071

关键词

Zeolite ECR-1; Radicalized seed; Acceleration; Crystallization process

资金

  1. National Natural Science Foundation of China [22172102, 21701117, 92145301, 91845201]
  2. Sci-entific Research Funding Project of Liaoning Province [LQN201908]
  3. LiaoNing Revitalization Talents Program [XLYC2007190]
  4. Shenyang Young and Middle-aged Scientific and Technological Innovation Talents Support Plan [RC210044]
  5. Ph.D. startup fund of Shenyang Normal University [BS201822]

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The study investigated the effect of seeds on the organic template-free synthesis of zeolite ECR-1. A radicalized seeds-assist route was successfully demonstrated for the rapid synthesis of ECR-1 zeolite, resulting in products with higher crystallinity and better catalytic performance.
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.

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