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Open AccessArticle

Thermal Modification Effect on Supported Cu-Based Activated Carbon Catalyst in Hydrogenolysis of Glycerol

1
Facultad de Ciencias Químicas, Universidad de Concepción, Edmundo Larenas 129, Casilla 160C, Chile
2
Millenium Nuclei on Catalytic Processes towards Sustainable Chemistry (CSC), Santiago 7810000, Chile
3
Instituto de Catálisis y Petroleoquímica, CSIC, Cantoblanco, 28049 Madrid, Spain
4
Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
5
Departamento de Ingeniería Química y Bioprocesos, Escuela de Ingeniería, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, Macul, Santiago 7810000, Chile
6
Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago 7810000, Chile
7
Unidad de Desarrollo Tecnológico, Universidad de Concepción, Coronel 4190000, Chile
*
Author to whom correspondence should be addressed.
Materials 2020, 13(3), 603; https://doi.org/10.3390/ma13030603
Received: 27 November 2019 / Revised: 17 January 2020 / Accepted: 23 January 2020 / Published: 29 January 2020
(This article belongs to the Special Issue Catalysts: Preparation, Catalytic Performance and Catalytic Reaction)
Glycerol hydrogenolysis to 1,2-propanediol (1,2-PDO) was performed over activated carbon supported copper-based catalysts. The catalysts were prepared by impregnation using a pristine carbon support and thermally-treated carbon supports (450, 600, 750, and 1000 °C). The final hydrogen adsorption capacity, porous structure, and total acidity of the catalysts were found to be important descriptors to understand catalytic performance. Oxygen surface groups on the support controlled copper dispersion by modifying acidic and adsorption properties. The amount of oxygen species of thermally modified carbon supports was also found to be a function of its specific surface area. Carbon supports with high specific surface areas contained large amount of oxygen surface species, inducing homogeneous distribution of Cu species on the carbon support during impregnation. The oxygen surface groups likely acted as anchorage centers, whereby the more stable oxygen surface groups after the reduction treatment produced an increase in the interaction of the copper species with the carbon support, and determined catalytic performances. View Full-Text
Keywords: glycerol; copper; activated carbon glycerol; copper; activated carbon
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MDPI and ACS Style

Seguel, J.; García, R.; Chimentão, R.J.; García-Fierro, J.L.; Ghampson, I.T.; Escalona, N.; Sepúlveda, C. Thermal Modification Effect on Supported Cu-Based Activated Carbon Catalyst in Hydrogenolysis of Glycerol. Materials 2020, 13, 603.

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