Guo Fenfen, Wang Yuxuan, Jiang Zhicheng, Tu Youjing, Li Ruikai, Zhang Xingyu, Tang Aoyi, Liang Yuan, Yan Lishi, Luo Hu, Li Shenggang, Kong Lingzhao
School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.
School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou 215009, China.
Molecules. 2025 Mar 25;30(7):1457. doi: 10.3390/molecules30071457.
The catalytic production of lactic acid from carbohydrates was considered a green way to efficiently utilize renewable biomass resources. In this study, an easy post-synthesis method was used to prepare a Sn-Beta catalyst for the production of lactic acid from glucose at 180 °C, 2 MPa, and 30 min. With optimized reaction time, temperature, pressure, and the ratio of raw material to catalyst, the yield of lactic acid reached an astonishingly high level of 76.0%. In addition, the catalyst characterizations were performed in-depth, revealing the intrinsic relationship between catalyst performance and structure, proving that the 2 wt% Sn was uniformly dispersed in the skeleton of Beta zeolite, which significantly increased the density of Lewis acid. Thus, the enhanced isomerization and retro-aldol condensation processes over the Lewis acid sites led to the high yield of lactic acid. This catalytic system kept stable after five cycles at mild conditions, showing high potential for industrial biomass utilization.
通过催化作用从碳水化合物生产乳酸被认为是一种有效利用可再生生物质资源的绿色途径。在本研究中，采用一种简便的合成后方法制备了用于在180℃、2MPa和30分钟条件下由葡萄糖生产乳酸的Sn-Beta催化剂。通过优化反应时间、温度、压力以及原料与催化剂的比例，乳酸产率达到了惊人的76.0%的高水平。此外，对催化剂进行了深入表征，揭示了催化剂性能与结构之间的内在关系，证明2wt%的Sn均匀分散在Beta沸石骨架中，这显著提高了路易斯酸密度。因此，路易斯酸位点上增强的异构化和逆羟醛缩合过程导致了乳酸的高产率。该催化体系在温和条件下经过五个循环后仍保持稳定，显示出在工业生物质利用方面的巨大潜力。
