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

The catalytic dehydration of 1,3-butanediol into butadiene was investigated over various aluminosilicates with different SiO 2 /Al 2 O 3 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...

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Bibliographic Details
Published in:Catalysis science & technology 2016-01, Vol.6 (15), p.583-584
Main Authors: Jing, F, Katryniok, B, Araque, M, Wojcieszak, R, Capron, M, Paul, S, Daturi, M, Clacens, J.-M, De Campo, F, Liebens, A, Dumeignil, F, Pera-Titus, M
Format: Article
Language:English
Subjects:
Aluminosilicates
Aluminum silicates
Butadiene
Catalysis
Catalysts
Chemical Sciences
Correlation
Formations
Propylene
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Summary:The catalytic dehydration of 1,3-butanediol into butadiene was investigated over various aluminosilicates with different SiO 2 /Al 2 O 3 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 NH 3 -TPD, pyridine adsorption and 27 Al-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 SiO 2 /Al 2 O 3 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. The catalytic dehydration of 1,3 - butanediol into butadiene was investigated over various aluminosilicates with different SiO 2 /Al 2 O 3 ratios and pore architectures.
ISSN:2044-4753
2044-4761
DOI:10.1039/c5cy02211h