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

Zinc 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...

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Main Authors: Lau, Kam Sheng, Chia, Chin Hua, Chin, Siew Xian, Chook, Soon Wei, Zakaria, Sarani, Juan, Joon Ching
Format: Article
Published: De Gruyter 2018
Subjects:
Q Science (General)
Online Access:http://eprints.um.edu.my/21548/
https://doi.org/10.1515/pac-2017-1005
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spelling my.um.eprints.215482020-01-08T06:08:04Z http://eprints.um.edu.my/21548/ Conversion of glucose into lactic acid using silica-supported zinc oxide as solid acid catalyst Lau, Kam Sheng Chia, Chin Hua Chin, Siew Xian Chook, Soon Wei Zakaria, Sarani Juan, Joon Ching Q Science (General) Zinc 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. De Gruyter 2018 Article PeerReviewed Lau, Kam Sheng and Chia, Chin Hua and Chin, Siew Xian and Chook, Soon Wei and Zakaria, Sarani and Juan, Joon Ching (2018) Conversion of glucose into lactic acid using silica-supported zinc oxide as solid acid catalyst. Pure and Applied Chemistry, 90 (6). pp. 1035-1043. ISSN 0033-4545 https://doi.org/10.1515/pac-2017-1005 doi:10.1515/pac-2017-1005
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic Q Science (General)
spellingShingle Q Science (General)
Lau, Kam Sheng
Chia, Chin Hua
Chin, Siew Xian
Chook, Soon Wei
Zakaria, Sarani
Juan, Joon Ching
Conversion of glucose into lactic acid using silica-supported zinc oxide as solid acid catalyst
description Zinc 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.
format Article
author Lau, Kam Sheng
Chia, Chin Hua
Chin, Siew Xian
Chook, Soon Wei
Zakaria, Sarani
Juan, Joon Ching
author_facet Lau, Kam Sheng
Chia, Chin Hua
Chin, Siew Xian
Chook, Soon Wei
Zakaria, Sarani
Juan, Joon Ching
author_sort Lau, Kam Sheng
title Conversion of glucose into lactic acid using silica-supported zinc oxide as solid acid catalyst
title_short Conversion of glucose into lactic acid using silica-supported zinc oxide as solid acid catalyst
title_full Conversion of glucose into lactic acid using silica-supported zinc oxide as solid acid catalyst
title_fullStr Conversion of glucose into lactic acid using silica-supported zinc oxide as solid acid catalyst
title_full_unstemmed Conversion of glucose into lactic acid using silica-supported zinc oxide as solid acid catalyst
title_sort conversion of glucose into lactic acid using silica-supported zinc oxide as solid acid catalyst
publisher De Gruyter
publishDate 2018
url http://eprints.um.edu.my/21548/
https://doi.org/10.1515/pac-2017-1005
_version_ 1657488192553615360
score 13.211869

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