Conversion of glucose into lactic acid using silica-supported zinc oxide as solid acid catalyst

Conversion of glucose into lactic acid using silica-supported zinc oxide as solid acid catalyst AbstractZinc oxide (ZnO) has been proven to be highly effective in converting biomass into fine chemicals. It possesses several limitations, such as leaching in hydrothermal reactions and difficulty with regard to its recovery. Supporting ZnO on silica improves its recovery, stability and recyclability. In this study, we produced silica-supported ZnO by incipient wetness impregnation (IWI) method for the conversion of glucose into lactic acid. The presence of the ZnO provided active sites for isomerization to occur. The highest yield of lactic acid was 39.2% at 180 °C for 60 min. Prolonged reaction time and higher reaction temperature promoted further degradation of lactic acid into acetic acid. The yield of lactic acid decreased after the first cycle and decreased slightly for the nine consecutive cycles. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Pure and Applied Chemistry de Gruyter

Conversion of glucose into lactic acid using silica-supported zinc oxide as solid acid catalyst

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Publisher
de Gruyter
Copyright
©2018 IUPAC & De Gruyter. This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. For more information, please visit: http://creativecommons.org/licenses/by-nc-nd/4.0/
ISSN
0033-4545
eISSN
1365-3075
D.O.I.
10.1515/pac-2017-1005
Publisher site
See Article on Publisher Site

Abstract

AbstractZinc oxide (ZnO) has been proven to be highly effective in converting biomass into fine chemicals. It possesses several limitations, such as leaching in hydrothermal reactions and difficulty with regard to its recovery. Supporting ZnO on silica improves its recovery, stability and recyclability. In this study, we produced silica-supported ZnO by incipient wetness impregnation (IWI) method for the conversion of glucose into lactic acid. The presence of the ZnO provided active sites for isomerization to occur. The highest yield of lactic acid was 39.2% at 180 °C for 60 min. Prolonged reaction time and higher reaction temperature promoted further degradation of lactic acid into acetic acid. The yield of lactic acid decreased after the first cycle and decreased slightly for the nine consecutive cycles.

Journal

Pure and Applied Chemistryde Gruyter

Published: Jun 27, 2018

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