三价钴胺络离子还原的实验研究  

Reduction of [Co( trien)( H_2O)_2]^(3+) with activated carbon

作　　者：辛志玲[1] 郭龙[1] 马从华 张大全[1] 

机构地区：[1]上海电力学院环境与化学工程学院,上海200090

出　　处：《化学工程》2014年第9期59-62,共4页Chemical Engineering(China)

基　　金：上海市教委科研创新项目(11YZ196)

摘　　要：用活性炭作催化剂,在间歇反应器中对三价钴胺络离子的还原过程进行了研究,考察了搅拌速率、活性炭粒度、反应温度等因素对还原过程的影响。实验结果表明:活性炭对[Co(trien)(H2O)2]3+离子的还原具有显著的催化作用;当搅拌速率大于300 r/min时,外扩散对反应的影响消除;当活性炭粒度超过120目时,内扩散对反应的影响消除;还原反应的速率随温度的升高而加快。利用实验数据对反应的本征动力学进行了拟合,得到[Co(trien)(H2O)2]3+离子的还原反应为一级反应,反应化能为12.9 kJ/mol。The reduction reaction of [Co（ trien）（ H2O）2]^3＋ was studied using activated carbon as catalyst in a batch reactor. The influences of stirring speed,particle size of activated carbon and reaction temperature on the reduction were investigated. The experimental results show that activated carbon has a significant catalytic effect on the reduction of [Co（ trien）（ H2O）2]^3＋. The influence of external diffusion on the reaction can be eliminated when stirring speed is above 300 r /min. The effect of internal diffusion on the reaction can be eliminated when the particle size of activated carbon is over 120 mesh. The catalytic reduction reaction rate increases with temperature.The experiments indicate that the reaction is first order with respect to [Co（ trien）（ H2O）2]3＋,and the apparent activation energy is 12. 9 kJ /mol.

关 键 词：催化还原 活性炭 吸附 脱除 脱硝 

分 类 号：X701[环境科学与工程—环境工程]