Publication: One-step Preparation of Carbon-based Solid Acid Catalyst from Water Hyacinth Leaves for Esterification of Oleic Acid and Dehydration of Xylose
Issued Date
2017-12-14
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ISSN
1861471X
18614728
18614728
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2-s2.0-85038437302
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Mahidol University
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SCOPUS
Bibliographic Citation
Chemistry - An Asian Journal. Vol.12, No.24 (2017), 3178-3186
Suggested Citation
Jutitorn Laohapornchaiphan, Christopher B. Smith, Siwaporn Meejoo Smith One-step Preparation of Carbon-based Solid Acid Catalyst from Water Hyacinth Leaves for Esterification of Oleic Acid and Dehydration of Xylose. Chemistry - An Asian Journal. Vol.12, No.24 (2017), 3178-3186. doi:10.1002/asia.201701369 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/42185
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Title
One-step Preparation of Carbon-based Solid Acid Catalyst from Water Hyacinth Leaves for Esterification of Oleic Acid and Dehydration of Xylose
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Abstract
© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim Carbon-based solid acid catalysts were successfully obtained via one-step hydrothermal carbonization (HTC) of water hyacinth (WH) in the presence of p-toluenesulfonic acid (PTSA). Increasing the HTC temperature from 180 to 240 °C resulted in carbonaceous materials with increased sulfur content and less adsorbed water. The material obtained at 220 °C (WH-PTSA-220) contains the highest amount of acid sites and promotes the highest initial rate of two transformations, that is, methanolysis of oleic acid and dehydration of xylose to furfural. While all PSTA-treated WH catalysts gave comparable fatty acid conversions (≈97 %) and furfural yields (≈60 %) after prolonged reaction times, the WH-PTSA-240 system bearing a relatively low acid density maintains the most favorable reusability profile. Higher HTC temperatures (220–240 °C) improved the catalyst reusability profiles due to graphitization and hydrophobicity of the carbon surface. The catalyst systems derived herein from biomass may have potential applications in biorefining platforms, utilizing the conversion of waste biomass to chemicals.