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Core-shell Zeolite Y with Ant-nest like Hollow Interior Constructed by Amino Acids and Enhanced Catalytic Activity

Abstract

Core-shell zeolite Y containing ant-nest like hollow interior has been synthesized in the presence of natural amino acids. Time-resolved characterization on zeolite samples revealed gradual development of the three-dimensionally interconnected mesoporous channels via intermediate stage of spatially aligned cavities in the core, which did not follow either classical or reversed crystal growth route. Comparative experiments suggested coordinative construction actions of amino acids, the interpenetration of which into the internal weak points of the aluminosilicate framework takes place simultaneously with zeolite crystallization. At the point of complete zeolite growth, amino acids in aggregated domains begin disassembling the zeolite interior forming network of channels while keeping the external zeolite shell thickness of 165 nm and morphologically similar to conventional faujasite. The core-shell zeolite Y samples exhibit superior crystallinity and enhanced catalytic activity for Friedel-Crafts benzylation of toluene.

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Publication details

The article was received on 10 Jun 2017, accepted on 03 Sep 2017 and first published on 04 Sep 2017


Article type: Paper
DOI: 10.1039/C7TA05048H
Citation: J. Mater. Chem. A, 2017, Accepted Manuscript
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    Core-shell Zeolite Y with Ant-nest like Hollow Interior Constructed by Amino Acids and Enhanced Catalytic Activity

    J. Zhang, S. Bai, Z. Chen, Y. Wang, L. Dong, H. Zheng, F. Cai and M. Hong, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA05048H

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