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Hierarchical SAPO-34 architectures with tailored acid sites using sustainable sugar templates

Hierarchical SAPO-34 architectures with tailored acid sites using sustainable sugar templates
Hierarchical SAPO-34 architectures with tailored acid sites using sustainable sugar templates

In a distinct, bottom-up synthetic methodology, monosaccharides (fructose and glucose) and disaccharides (sucrose) have been used as mesoporogens to template hierarchical SAPO-34 catalysts. Detailed materials characterization, which includes solid-state magic angle spinning NMR and probe-based FTIR, reveals that, although the mesopore dimensions are modified by the identity of the sugar template, the desirable acid characteristics of the microporous framework are retained. When the activity of the hierarchical SAPO-34 catalysts was evaluated in the industrially relevant Beckmann rearrangement, under liquid-phase conditions, the enhanced mass-transport properties of sucrose-templated hierarchical SAPO-34 were found to deliver a superior yield of ϵ-caprolactam.

acid catalysis, bottom-up synthesis, hierarchical SAPO-34, physicochemical characterization, sustainable templates
2191-1363
297-301
Miletto, Ivana
9a3fe0ee-6afd-4e72-abff-8e83a9114ae9
Ivaldi, Chiara
1d6cc307-537f-4da4-95b9-982acb50b94e
Paul, Geo
fe93c674-eedd-4eda-8c84-190bc5b1687f
Chapman, Stephanie
02fa6ac4-c0e7-4cd3-8ffb-bf1c88cbfd45
Marchese, Leonardo
684a36ec-9847-4604-82e7-71234cd44090
Raja, Robert
74faf442-38a6-4ac1-84f9-b3c039cb392b
Gianotti, Enrica
2496d8d3-780f-4fe0-a43e-147e68331078
Miletto, Ivana
9a3fe0ee-6afd-4e72-abff-8e83a9114ae9
Ivaldi, Chiara
1d6cc307-537f-4da4-95b9-982acb50b94e
Paul, Geo
fe93c674-eedd-4eda-8c84-190bc5b1687f
Chapman, Stephanie
02fa6ac4-c0e7-4cd3-8ffb-bf1c88cbfd45
Marchese, Leonardo
684a36ec-9847-4604-82e7-71234cd44090
Raja, Robert
74faf442-38a6-4ac1-84f9-b3c039cb392b
Gianotti, Enrica
2496d8d3-780f-4fe0-a43e-147e68331078

Miletto, Ivana, Ivaldi, Chiara, Paul, Geo, Chapman, Stephanie, Marchese, Leonardo, Raja, Robert and Gianotti, Enrica (2018) Hierarchical SAPO-34 architectures with tailored acid sites using sustainable sugar templates. ChemistryOpen, 7 (4), 297-301. (doi:10.1002/open.201800001).

Record type: Article

Abstract

In a distinct, bottom-up synthetic methodology, monosaccharides (fructose and glucose) and disaccharides (sucrose) have been used as mesoporogens to template hierarchical SAPO-34 catalysts. Detailed materials characterization, which includes solid-state magic angle spinning NMR and probe-based FTIR, reveals that, although the mesopore dimensions are modified by the identity of the sugar template, the desirable acid characteristics of the microporous framework are retained. When the activity of the hierarchical SAPO-34 catalysts was evaluated in the industrially relevant Beckmann rearrangement, under liquid-phase conditions, the enhanced mass-transport properties of sucrose-templated hierarchical SAPO-34 were found to deliver a superior yield of ϵ-caprolactam.

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Accepted/In Press date: 26 January 2018
e-pub ahead of print date: 14 April 2018
Published date: April 2018
Keywords: acid catalysis, bottom-up synthesis, hierarchical SAPO-34, physicochemical characterization, sustainable templates

Identifiers

Local EPrints ID: 420537
URI: http://eprints.soton.ac.uk/id/eprint/420537
ISSN: 2191-1363
PURE UUID: edba13ed-7b37-4023-b073-23c4e9266fad
ORCID for Robert Raja: ORCID iD orcid.org/0000-0002-4161-7053

Catalogue record

Date deposited: 10 May 2018 16:30
Last modified: 18 Feb 2021 17:07

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Contributors

Author: Ivana Miletto
Author: Chiara Ivaldi
Author: Geo Paul
Author: Stephanie Chapman
Author: Leonardo Marchese
Author: Robert Raja ORCID iD
Author: Enrica Gianotti

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