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Issue 15, 2016
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Direct dehydration of 1,3-butanediol into butadiene over aluminosilicate catalysts

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Abstract

The catalytic dehydration of 1,3-butanediol into butadiene was investigated over various aluminosilicates with different SiO2/Al2O3 ratios and pore architectures. A correlation between the catalytic performance and the total number of acid sites and acid strength was established, with a better performance for lower acid site densities as inferred from combined NH3-TPD, pyridine adsorption and 27Al-NMR MAS spectroscopy. The presence of native Brønsted acid sites of medium strength was correlated to the formation of butadiene. A maximum butadiene yield of 60% was achieved at 300 °C over H-ZSM-5 with a SiO2/Al2O3 ratio of 260 with the simultaneous formation of propylene at a BD/propylene selectivity ratio of 2.5. This catalyst further exhibited a slight deactivation during a 102 h run with a decrease in the conversion from 100% to 80% due to coke deposition as evidenced by XPS and TGA-MS, resulting in a 36% loss of the specific surface area.

Graphical abstract: Direct dehydration of 1,3-butanediol into butadiene over aluminosilicate catalysts

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Supplementary files

Article information


Submitted
19 Dec 2015
Accepted
04 Feb 2016
First published
05 Feb 2016

This article is Open Access

Catal. Sci. Technol., 2016,6, 5830-5840
Article type
Paper

Direct dehydration of 1,3-butanediol into butadiene over aluminosilicate catalysts

F. Jing, B. Katryniok, M. Araque, R. Wojcieszak, M. Capron, S. Paul, M. Daturi, J.-M. Clacens, F. De Campo, A. Liebens, F. Dumeignil and M. Pera-Titus, Catal. Sci. Technol., 2016, 6, 5830
DOI: 10.1039/C5CY02211H

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