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Highly efficient TiO2-supported Co–Cu catalysts for conversion of glycerol to 1,2-propanediol
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Document Title
Highly efficient TiO2-supported Co–Cu catalysts for conversion of glycerol to 1,2-propanediol
Author
Mondach W., Chanklang S., Somchuea P., Witoon T., Chareonpanich M., Faungnawakij K., Sohn H., Seubsai A.
Name from Authors Collection
Affiliations
Department of Chemical Engineering, Faculty of Engineering, Kasetsart University, Bangkok, 10900, Thailand; Center of Excellence on Petrochemical and Materials Technology, Kasetsart University, Bangkok, 10900, Thailand; Research Network of NANOTEC–KU on NanoCatalysts and NanoMaterials for Sustainable Energy and Environment, Kasetsart University, Bangkok, 10900, Thailand; Nanomaterials for Energy and Catalysis Laboratory, National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Klong Laung, Pathumthani, 12120, Thailand; Department of Chemical Engineering, Kwangwoon University, Seoul, 01897, South Korea
Type
Article
Source Title
Scientific Reports
ISSN
20452322
Year
2021
Volume
11
Issue
1
Open Access
Gold, Green
Publisher
Nature Research
DOI
10.1038/s41598-021-02416-7
Abstract
Glycerol is a low-cost byproduct of the biodiesel manufacturing process, which can be used to synthesize various value-added chemicals. Among them, 1,2-propanediol (1,2-PDO) is of great interest because it can be used as an intermediate and additive in many applications. This work investigated the hydrogenolysis of glycerol to 1,2-PDO over Co–Cu bimetallic catalysts supported on TiO2 (denoted as CoCu/TiO2) in aqueous media. The catalysts were prepared using the co-impregnation method and their physicochemical properties were characterized using several techniques. The addition of appropriate Cu increased the glycerol conversion and the 1,2-PDO yield. The highest 1,2-PDO yield was achieved over a 15Co0.5Cu/TiO2 catalyst at 69.5% (glycerol conversion of 95.2% and 1,2-PDO selectivity of 73.0%). In the study on the effects of operating conditions, increasing the reaction temperature, initial pressure, and reaction time increased the glycerol conversion but decreased the selectivity to 1,2-PDO due to the degradation of formed 1,2-PDO to lower alcohols (1-propanol and 2-propanol). The reaction conditions to obtain the maximum 1,2-PDO yield were a catalyst-to-glycerol ratio of 0.028, a reaction temperature of 250 °C, an initial H2 pressure of 4 MPa, and a reaction time of 4 h. © 2021, The Author(s).
Funding Sponsor
National Science and Technology Development Agency; Kasetsart University Research and Development Institute; National Nanotechnology Center; Ministry of Science and Technology of Thailand; Center of Excellence on Petrochemical and Materials Technology
License
CC BY
Rights
Author
Publication Source
Scopus