Formic Acid‐Induced Controlled‐Release Hydrolysis of Microalgae (Scenedesmus) to Lactic Acid over Sn‐Beta Catalyst,ChemSusChem

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Formic Acid‐Induced Controlled‐Release Hydrolysis of Microalgae (Scenedesmus) to Lactic Acid over Sn‐Beta Catalyst
ChemSusChem ( IF 7.5 ) Pub Date : 2018-07-05 , DOI: 10.1002/cssc.201801087
Yifan Zan _{1,

2} , Yuanyuan Sun ₁ , Lingzhao Kong ₁ , Gai Miao ₁ , Liwei Bao ₁ , Hao Wang ₁ , Shenggang Li ₁ , Yuhan Sun ₁

Affiliation

Formic acid‐induced controlled‐release hydrolysis of sugar‐rich microalgae (Scenedesmus) over the Sn‐Beta catalyst was found to be a highly efficient process for producing lactic acid as a platform chemical. One‐pot reaction with a very high lactic acid yield of 83.0 % was realized in a batch reactor using water as the solvent. Under the attack of formic acid, the cell wall of Scenedesmus was disintegrated, and hydrolysis of the starch inside the cell was strengthened in a controlled‐release mode, resulting in a stable and relatively low glucose concentration. Subsequently, the Sn‐Beta catalyst was employed for the efficient conversion of glucose into lactic acid with stable catalytic performance through isomerization, retro‐aldol and de‐/rehydration reactions. Thus, the hydrolysis of polysaccharides and the catalytic conversion of the monosaccharide into lactic acid was realized by the combination of an organic Brønsted acid and a heterogeneous Lewis acid catalyst.

中文翻译：

Sn-β催化剂上甲酸诱导的微藻类（场景动物）的受控释放水解为乳酸

甲酸诱导的富含糖的微藻（Scendesmus）在Sn-Beta催化剂上的控制释放水解是生产乳酸作为平台化学品的高效方法。在使用水作为溶剂的间歇式反应器中，实现了83.0％的极高乳酸产率的单釜反应。在甲酸的攻击下，Scendesmus的细胞壁分解后，细胞内淀粉的水解以控释方式加强，导致葡萄糖浓度稳定且相对较低。随后，Sn-Beta催化剂用于通过异构化，逆醛醇缩合和脱水/再水化反应将葡萄糖有效转化为乳酸，并具有稳定的催化性能。因此，通过有机布朗斯台德酸和多相路易斯酸催化剂的结合，实现了多糖的水解和单糖向乳酸的催化转化。

更新日期：2018-07-05

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