摘要
以TiO2为催化剂,紫外灯为光源,对乳酸的光催化降解进行动力学研究。乳酸降解反应动力学拟合结果表明,降解动力学规律符合Langmuir-Hinshelwood动力学模型,反应速率常数k=0.0085g/(L.min),一级反应动力学模型与实验数据拟合较好,方差R2大于0.99,乳酸初始降解速率r0随乳酸初始浓度增大而增大。
It was studied that the photocatalytic degradation-kinetics of lactic acid with TiO2, using ultraviolet lamp as light source.The results showed that the degradation reactions were in accordance with Langmuir-Himshelwood equation,and the photocatalytic degradation reactions of lactic acid is the first-order kinetics model, R^2 〉 0.99 ,the initial reaction rate increased with increasing initial concentration of lactic acid.
出处
《食品工业科技》
CAS
CSCD
北大核心
2010年第10期124-125,128,共3页
Science and Technology of Food Industry
基金
广西自然科学基金资助项目(0640010)
关键词
光催化
乳酸
TIO2
动力学
photocatalysis
lactic acid
TiQ2
kinetics
