Issue 15, 2016

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

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

Supplementary files

Article information

Article type
Paper
Submitted
19 dek 2015
Accepted
04 fev 2016
First published
05 fev 2016
This article is Open Access
Creative Commons BY-NC license

Catal. Sci. Technol., 2016,6, 5830-5840

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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