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Selective Conversion of Scenedesmus into Lactic Acid over Amine-Modified Sn-β

[Image: see text] Amine-modified Sn-β was synthesized to improve the yield of lactic acid produced from Scenedesmus. After studying the growth of Scenedesmus, we selected Scenedesmus with the highest sugar content of 46.7% after 8 days of culture as the reaction substrate. The results showed that th...

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Autores principales: Shen, Zheng, Gao, Yishan, Kong, Ling, Gu, Minyan, Xia, Meng, Dong, Wenjie, Zhang, Wei, Zhou, Xuefei, Zhang, Yalei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2020
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7807806/
https://www.ncbi.nlm.nih.gov/pubmed/33458480
http://dx.doi.org/10.1021/acsomega.0c04561
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author Shen, Zheng
Gao, Yishan
Kong, Ling
Gu, Minyan
Xia, Meng
Dong, Wenjie
Zhang, Wei
Zhou, Xuefei
Zhang, Yalei
author_facet Shen, Zheng
Gao, Yishan
Kong, Ling
Gu, Minyan
Xia, Meng
Dong, Wenjie
Zhang, Wei
Zhou, Xuefei
Zhang, Yalei
author_sort Shen, Zheng
collection PubMed
description [Image: see text] Amine-modified Sn-β was synthesized to improve the yield of lactic acid produced from Scenedesmus. After studying the growth of Scenedesmus, we selected Scenedesmus with the highest sugar content of 46.7% after 8 days of culture as the reaction substrate. The results showed that the yield of lactic acid from Scenedesmus was greatly increased after being catalyzed by 3-aminopropyltrimethoxysilane (APTMS)-modified Sn-β. After the pretreatment of Scenedesmus in an ice bath ultrasound, under the optimal reaction conditions (190 °C and 5 h), the yield of lactic acid reached the highest (37%). The acid–base characterization results of the catalyst confirmed that there are both Lewis acidic sites and medium-strength basic sites in the catalyst. Both of these sites can promote the hydrolysis of Scenedesmus, while the Lewis acidic sites can promote the production of lactic acid and the basic sites can effectively inhibit the production of the byproduct 5-hydroxymethylfurfural (HMF). This study proved that this amination catalyst is a useful strategy to increase the yield of lactic acid.
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spelling pubmed-78078062021-01-15 Selective Conversion of Scenedesmus into Lactic Acid over Amine-Modified Sn-β Shen, Zheng Gao, Yishan Kong, Ling Gu, Minyan Xia, Meng Dong, Wenjie Zhang, Wei Zhou, Xuefei Zhang, Yalei ACS Omega [Image: see text] Amine-modified Sn-β was synthesized to improve the yield of lactic acid produced from Scenedesmus. After studying the growth of Scenedesmus, we selected Scenedesmus with the highest sugar content of 46.7% after 8 days of culture as the reaction substrate. The results showed that the yield of lactic acid from Scenedesmus was greatly increased after being catalyzed by 3-aminopropyltrimethoxysilane (APTMS)-modified Sn-β. After the pretreatment of Scenedesmus in an ice bath ultrasound, under the optimal reaction conditions (190 °C and 5 h), the yield of lactic acid reached the highest (37%). The acid–base characterization results of the catalyst confirmed that there are both Lewis acidic sites and medium-strength basic sites in the catalyst. Both of these sites can promote the hydrolysis of Scenedesmus, while the Lewis acidic sites can promote the production of lactic acid and the basic sites can effectively inhibit the production of the byproduct 5-hydroxymethylfurfural (HMF). This study proved that this amination catalyst is a useful strategy to increase the yield of lactic acid. American Chemical Society 2020-12-29 /pmc/articles/PMC7807806/ /pubmed/33458480 http://dx.doi.org/10.1021/acsomega.0c04561 Text en © 2020 American Chemical Society This is an open access article published under a Creative Commons Non-Commercial No Derivative Works (CC-BY-NC-ND) Attribution License (http://pubs.acs.org/page/policy/authorchoice_ccbyncnd_termsofuse.html) , which permits copying and redistribution of the article, and creation of adaptations, all for non-commercial purposes.
spellingShingle Shen, Zheng
Gao, Yishan
Kong, Ling
Gu, Minyan
Xia, Meng
Dong, Wenjie
Zhang, Wei
Zhou, Xuefei
Zhang, Yalei
Selective Conversion of Scenedesmus into Lactic Acid over Amine-Modified Sn-β
title Selective Conversion of Scenedesmus into Lactic Acid over Amine-Modified Sn-β
title_full Selective Conversion of Scenedesmus into Lactic Acid over Amine-Modified Sn-β
title_fullStr Selective Conversion of Scenedesmus into Lactic Acid over Amine-Modified Sn-β
title_full_unstemmed Selective Conversion of Scenedesmus into Lactic Acid over Amine-Modified Sn-β
title_short Selective Conversion of Scenedesmus into Lactic Acid over Amine-Modified Sn-β
title_sort selective conversion of scenedesmus into lactic acid over amine-modified sn-β
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7807806/
https://www.ncbi.nlm.nih.gov/pubmed/33458480
http://dx.doi.org/10.1021/acsomega.0c04561
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