(广西大学 化学化工学院 广西高校资源化工应用新技术重点实验室，南宁 530004)
摘 要: 研究在硫酸水溶液体系葡萄糖还原浸出氧化锰矿过程中的分解动力学，通过测定溶液中COD含量的变化，考察葡萄糖用量、硫酸浓度、氧化锰矿用量和反应温度对葡萄糖氧化分解速率的影响。结果表明:提高硫酸浓度、氧化锰矿用量和反应温度可以加快浸出反应过程葡萄糖的氧化分解速率。葡萄糖的氧化分解过程可以用指数经验模型来描述，属于扩散-化学反应混合控制。通过拟合动力学数据，获得葡萄糖氧化分解反应的活化能为41.80 kJ/mol，COD、硫酸和氧化锰矿的表观反应级数分别为2.0，0.927和0.976。
关键字: 氧化锰矿；葡萄糖；分解；动力学
（Guangxi Colleges and Universities Key Laboratory of New Technology and Application in Resource Chemical Engineering, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China）
Abstract:The kinetics of decomposing of glucose during the reductive leaching process of manganese oxide ore in dilute sulfuric acid was examined. The change of COD concentration remained in solution was measured to quantify the effects of glucose dosage, sulfuric acid concentration, manganese oxide ore dosage and leaching temperature on decomposing rate of glucose. The results show that the decomposing rate of glucose increases with the increase of the leaching temperature, sulfuric acid concentration and manganese oxide ore dosage. The leaching process follows the kinetics of index empirical model, hybrid controlled by diffusion-chemical reaction and the apparent activation energy is 41.80 kJ/mol. The reaction orders of COD, sulfuric acid, manganese oxide ore are 2.0, 0.927 and 0.976, respectively.
Key words: manganese oxide ore; glucose; decomposing; kinetics
