One-pot Conversion of Cellulose to Lactic Acid Catalyzed by Metal Ion Gd^(3+) and A Detailed Analysis on the Product Distribution

Zhong Xu ； Qing Qing ； Huilong Ji ； Shanshan Jiang ； Liqun Wang

《World Scientific Research Journal》 6卷6期 (2020/06) Pp. 270-278

https://doi.org/10.6911/WSRJ.202006_6(6).0033

摘要

The Lewis acid salt was used as a catalyst to study the reaction of cellulose conversion to lactic acid in a pure water system. The catalytic system can effectively inhibit the dehydration of fructose and promote the isomerization of glucose and the reverse aldol reaction of fructose. The catalytic performance of different metal salts was investigated and it was found that gadolinium nitrate was more effective as a catalyst. The effects of reaction temperature, time, catalyst loading, N_2 content and solid-liquid ratio on the yield of lactic acid were analyzed by plotting. The results show that in the 30 mL system, the maximum lactic acid yield was 56.6% when the reaction temperature was 240°C, the reaction time was 30 minutes, the catalyst was 0.135 mmol, the N2 pressure was 2 MPa, and the solid-liquid ratio was 1: 300 (w/v).

關鍵字

Lewis acid salt ； Cellulose ； Lactic acid ； Isomerization ； Reverse aldol reaction ； Catalyst

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