摘要
介绍了超临界二氧化碳 (scCO2 )胶束催化技术的研究进展 :scCO2 胶束及其相特征、CO2 表面活性剂及scCO2 胶束催化技术的应用与工艺开发。scCO2 胶束及其相特征对于设计高效的亲CO2 表面活性剂及研究scCO2胶束催化作用具有重要指导意义。scCO2 胶束的相特征主要是温度、压力和胶束含水比的函数。指出了开发亲CO2 表面活性剂的一些基本原则 ,其中降低表面活性剂在H2 O/CO2 表面的界面张力和提高活性剂的吸附能力要比提高溶解度更为重要。scCO2 胶束催化技术可以明显提高催化反应活性 ,适合于开发原位分离反应工艺。建议加强scCO2
The advances in micellar catalysis in supercritical carbon dioxide (scCO 2), including the phase behavior of reverse micelles in scCO 2, the surfactant for CO 2, and the application and process developing of micellar catalysis in scCO 2 was introduced. The phase behavior of reverse micelles in scCO 2 is a function of temperature, pressure and the molar ratio of water to surfactant, and it is the key to design new efficient CO 2 surfactants and to study on micellar catalysis in scCO 2. Some basic guidelines and criteria to develop efficient CO 2-philic surfactants were also pointed out. High interfacial adsorption and ability to lower the water/scCO 2 interfacial tension are more important than the solubility of surfactant in scCO 2. Micellar catalysis in scCO 2 can enhance the reaction activity efficiently and is suitable to develop an in-site separation-reaction process. The emphasis should be put on the research of micellar catalysis in scCO 2 and the development of its process.
出处
《化工进展》
EI
CAS
CSCD
北大核心
2004年第9期948-952,共5页
Chemical Industry and Engineering Progress
基金
广东省自然科学基金资助项目 (No 3 14 2 4)
关键词
超临界二氧化碳
胶束催化
表面活性剂
supercritical carbon dioxide,micellar catalysis,surfactant
