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Titanium hydrogenphosphate: An efficient dual acidic catalyst for 5-hydroxymethylfurfural (HMF) production

Paper ID Volume ID Publish Year Pages File Format Full-Text
39429 45823 2014 7 PDF Available
Title
Titanium hydrogenphosphate: An efficient dual acidic catalyst for 5-hydroxymethylfurfural (HMF) production
Abstract

•Dual acidic solid catalyst, TiHP, has been synthesized by a simple template free method.•Total Brønsted and Lewis acid density of the catalyst is 1.43 mmol g−1.•Achieved 55% HMF yield from fructose.•Larger scale reaction achieved higher yields due to efficient mechanical stirring.

Dual Brønsted and Lewis acidity of solid acid catalysts enhances selective production of 5-hydroxymethylfurfural (HMF). This report describes a simple template-free synthetic approach for the preparation of titanium hydrogenphosphate (TiHP) material containing Lewis and Brønsted acid sites. As-synthesized material has been thoroughly analyzed by several analytical methods for elucidating its structural properties, including determination of the presence of Brønsted acidic phosphate group and measurement of total acid density. NH3-TPD data reveals high surface acidity (1.43 mmol g−1) of the TiHP, which is indeed reflects to its catalytic effectiveness for the conversion of fructose, giving 55% HMF in biphasic solvent. Glucose conversion gives better yield (35%) when the reaction was carried out in a larger reactor (2 L Parr reactor), which might be due to better mechanical stirring and hence higher mixing efficiency of the reactants. Brønsted acid sites in the catalyst facilitated the formation of furan ring opening product, levulinic acid, at higher temperatures. The catalyst shows excellent recyclability and the recovered catalyst after the 3rd cycles retained XRD and TGA characteristics.

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Keywords
Titanium hydrogenphosphate; Dual acidity; Carbohydrates; 5-Hydroxymethyl furfural; Biphasic solvent
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Titanium hydrogenphosphate: An efficient dual acidic catalyst for 5-hydroxymethylfurfural (HMF) production
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 486, 22 September 2014, Pages 42–48
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us