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Issue 27, 2018
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Graphene oxide-assisted synthesis of core–shell structured ZSM-5 zeolites and their catalyst texture effect on the catalytic performance in the acid-catalyzed o-methylation of cyclohexanone with methanol

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Abstract

Tailoring the crystallization process to realize targeted material texture/porosity is a major challenge in zeolite synthesis, which facilitates the practical application of zeolites. In the present work, core–shell structured ZSM-5 zeolites were successfully synthesized through a graphene oxide (GO)-assisted hydrothermal method and characterized by XRD, SEM, NH3-TPD and N2 adsorption–desorption analysis. GO sheets have dual roles in the formation of core–shell structured ZSM-5 zeolites. GO nanosheets attached to the outer surface of large ZSM-5 crystal cores not only tailor the growth of crystal planes but also induce the formation of ZSM-5 nanocrystal layers. Compared to the conventional ZSM-5 zeolite, due to the c-axis oriented ZSM-5 cores and unique core–shell structure, the core–shell structured ZSM-5 zeolites expose more accessible acidic sites and shorten the diffusion path for molecules, leading to an enhanced catalytic activity for the o-methylation of cyclohexanone with methanol.

Graphical abstract: Graphene oxide-assisted synthesis of core–shell structured ZSM-5 zeolites and their catalyst texture effect on the catalytic performance in the acid-catalyzed o-methylation of cyclohexanone with methanol

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Publication details

The article was received on 07 Apr 2018, accepted on 04 Jun 2018 and first published on 04 Jun 2018


Article type: Paper
DOI: 10.1039/C8CE00542G
Citation: CrystEngComm, 2018,20, 3898-3904
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    Graphene oxide-assisted synthesis of core–shell structured ZSM-5 zeolites and their catalyst texture effect on the catalytic performance in the acid-catalyzed o-methylation of cyclohexanone with methanol

    X. Kang, Y. Liu, H. Wang and S. Bian, CrystEngComm, 2018, 20, 3898
    DOI: 10.1039/C8CE00542G

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