Issue 38, 2024

Synthesis of a hierarchical TS-1 zeolite with tunable macropore size and its performance in the catalytic oxidation reactions

Abstract

Hierarchically structured materials are considered to be one of the important options to enhance the mass transportation efficiency in microporous zeolites. Herein, we reported a highly efficient steam-assisted crystallization strategy for the synthesis of a hierarchical TS-1 zeolite with a tunable macropore size. The amorphous SiO2–TiO2 precursor dissolved gradually and acted as both a nutrient supplier and macropore template in situ. The framework Ti content of the synthesized TS-1 zeolites could be tuned over a wide range (Ti wt% = 0.70–1.39) by varying the Ti content of the SiO2–TiO2 precursor. Moreover, the pore size of the macropores could be modulated according to the particle size of the precursor based on the investigation of the formation mechanism of the macropores in the hierarchical TS-1 zeolite. The hierarchical TS-1 zeolite exhibited better catalytic activity in the epoxidation reaction of 1-hexene and hydroxylation of phenol compared to the typical microporous zeolites. The improved performance of the hierarchical TS-1 zeolite was probably caused by the improved diffusion performance of the hierarchical structure.

Graphical abstract: Synthesis of a hierarchical TS-1 zeolite with tunable macropore size and its performance in the catalytic oxidation reactions

Supplementary files

Article information

Article type
Paper
Submitted
16 Jul 2024
Accepted
28 Aug 2024
First published
13 Sep 2024
This article is Open Access
Creative Commons BY-NC license

CrystEngComm, 2024,26, 5469-5478

Synthesis of a hierarchical TS-1 zeolite with tunable macropore size and its performance in the catalytic oxidation reactions

S. Zhu, X. Zhang, L. Dong, Y. Yuan, X. Ma, Y. Chen and L. Xu, CrystEngComm, 2024, 26, 5469 DOI: 10.1039/D4CE00706A

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