化工进展2016，Vol.35Issue(10)：3078-3085,8.DOI:10.16085/j.issn.1000-6613.2016.10.010
DBU/甘油/CO2反应过程及动力学
Reaction progress and kinetics of CO2 with glycerol in the presence of DBU
摘要
Abstract
1,8-diazabicyclo[5.4.0] undec-7-ene(DBU)/glycerol solution used as a new solvent,which has low heat capacity and high boiling point,has been widely studied in chemical synthesis and product separation. The absorption of CO2 at different ratios of DBU/glycerol solutions was investigated. It is shown that the amount of CO2 absorbed in this solution could reach 10.88g/100g within 120min at 25℃ under atmospheric pressure,0.49∶1 of the molar ratio of DBU to glycerol and 238mL/min of the flow rate of CO2. The viscosity of the solution at different ratios during reaction was also measured. It increased with the increase of time and the amount of DBU when the molar ratio of DBU and glycerol was 0.49∶1 and 1.12∶1. But, when the molar ratio of DBU to glycerol was 0.11∶1 and 3.43∶1,the viscosity of the solution changed a little. Furthermore,the kinetics of carbon dioxide binding by DBU/glycerol solution was studied. The reaction rate of DBU/glycerol/CO2 can be expressed asr=0.22CDBU20.5COPat 25℃ without the effect of agitation under atmospheric pressure when glycerol is excessive. The activation energy of the reaction is 40.44kJ/mol.关键词
1,8-二氮朵双环5.4.0十一碳-7-烯/甘油/二氧化碳/黏度/反应动力学Key words
DBU/glycerol/carbon dioxide/viscosity/reaction kinetics分类
化学化工引用本文复制引用
张猛,鲁厚芳,梁斌,刘颖颖,郝晓刚..DBU/甘油/CO2反应过程及动力学[J].化工进展,2016,35(10):3078-3085,8.基金项目
国家自然科学基金重点项目（21336008）、国家自然科学基金面上项目（21476150）、教育部博士点基金（20130181130006）及山西省煤基重点科技攻关项目（MD2014-09）。 （）
