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Nanostructured zeolite with brain-coral morphology and tailored acidity: a self-organized hierarchical porous material with MFI topology

Selvam, Esun, Parsapur, Rajesh, Hernandez-Tamargo, Carlos, de Leeuw, Nora and Selvam, Parasuraman 2020. Nanostructured zeolite with brain-coral morphology and tailored acidity: a self-organized hierarchical porous material with MFI topology. CrystEngComm 22 (38) , pp. 6275-6286. 10.1039/d0ce00989j

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Abstract

We report here the synthesis of nano-zeolite, viz., ZSM-5 with MFI topology, having a unique brain-coral morphology, designated as n-ZSM-5. These nanoscopic structures (250–300 nm) are in turn formed by self-organization of uniform nanoparticles of zeolite nanospheres of sizes 10–40 nm. Such a remarkable crystal architecture endows the material with improved physico-chemical properties, viz., enhanced surface area, distributed acid sites, mesoporosity and reduced diffusion resistance, which make n-ZSM-5 a promising solid acid catalyst. For comparison, bulk or conventional ZSM-5, referred to as c-ZSM-5, was also synthesized and its performance for tertiary butylation of phenol was evaluated. Density functional theory modelling studies provide an adequate description of the variation of acid strength observed in temperature-programmed desorption of ammonia experiments.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Publisher: Royal Society of Chemistry
ISSN: 1466-8033
Funders: EPSRC
Date of First Compliant Deposit: 23 September 2020
Date of Acceptance: 12 August 2020
Last Modified: 22 Oct 2020 14:32
URI: http://orca.cf.ac.uk/id/eprint/134542

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