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Open AccessArticle

Studies on the Binary MgO/SiO2 Mixed Oxide Catalysts for the Conversion of Ethanol to 1,3-Butadiene

1
Faculty of Chemistry and Food Chemistry, Dresden University of Technology, Mommsenstrasse 4, D-01062 Dresden, Germany
2
Department Chemical Engineering, HTW University of Applied Sciences Dresden, Friedrich-List-Platz 1, D-01069 Dresden, Germany
*
Authors to whom correspondence should be addressed.
Catalysts 2020, 10(8), 854; https://doi.org/10.3390/catal10080854
Received: 1 July 2020 / Revised: 20 July 2020 / Accepted: 25 July 2020 / Published: 1 August 2020
(This article belongs to the Special Issue Porous Materials and Catalysts)
The demand for 1,3-butadiene, one of the most important raw materials in the rubber industry, is constantly increasing. The Lebedev process is a classical method of producing 1,3-butadiene from ethanol, which is to be optimized with regard to the mixed oxide catalysts used. In this work, the binary MgO/SiO2 solid system was tested with regard to its optimum chemical composition for the catalytic conversion of ethanol to 1,3-butadiene. Furthermore, novel mesoporous mixed oxides were prepared to investigate their textural, structural, and surface chemical properties as well as the catalytic activity. Nitrogen physisorption, scanning electron microscopy (SEM), and temperature-programmed ammonia desorption (NH3-TPD) measurements were carried out and evaluated. It was shown that the optimum yield of 1,3-butadiene is achieved by using MgO/SiO2 mixed oxide catalysts with 85–95 mol% MgO and not, as suggested by Lebedev, with 75 mol% MgO. The NH3-TPD measurements revealed that the maximum acid-site density is achieved with an equimolar up to magnesium-rich composition. During the synthesis of binary MgO/SiO2 solid systems based on mesoporous MgO, a thermally stable and ordered structure was formed in the autoclave, depending on the carbonate used and on the duration of the treatment. View Full-Text
Keywords: butadiene; characterization; heterogeneous catalysis; mesoporous materials; mixed oxide catalyst butadiene; characterization; heterogeneous catalysis; mesoporous materials; mixed oxide catalyst
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MDPI and ACS Style

Reschetilowski, W.; Hauser, M.; Alscher, F.; Klauck, M.; Kalies, G. Studies on the Binary MgO/SiO2 Mixed Oxide Catalysts for the Conversion of Ethanol to 1,3-Butadiene. Catalysts 2020, 10, 854.

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