Study on conversion of glucose to lactic acid over tantalum oxide [氧化钽催化葡萄糖制备乳酸]

作者：Yu K.-R.; Zhuang J.-P.^*; Zhu Q.-Q.; Liu Y.; Wu S.-B.

来源：Modern Chemical Industry, 2019, 39(8): 162-165.

DOI：10.16606/j.cnki.issn0253-4320.2019.08.034

• Glucose
• Lactic acid
• Tantalum oxide

Ta2O5 is selected as the catalyst for the conversion of glucose to lactic acid.It is found that Ta2O5 exhibits an excellent catalytic performance.SEM characterization shows that Ta2O5 surface is composed of many spherical particles with a size of 200-300 nm.In addition,orthogonal experiments are performed to analyze the influence level of different reaction conditions on catalytic efficiency.Experimental results indicate that the order of influence degree from big to small is reaction temperature,substrate concentration,reaction time,catalyst dosage.Finally,the reusability of catalysts and the effects of different reaction conditions on the catalytic efficiency are investigated.The results show that the conversion of glucose and the yield of lactic acid are 92.3% and 71.9%,respectively under the best conditions that reaction temperature is set at 19℃,the reaction time is 4 h,the concentration of substrate is 6 g·L-1 and 0.06 g of catalyst is added.The yield of lactic acid can still reach 46.7% after the catalyst is used for five times.

• 单位
  华南理工大学