摘要
An environmentally benign method to accelerate the pinacol rearrangement in high temperature liquid water by the addition of CO2 was proposed.The effects of CO2 initial pressure and temperature on the kinetics of pinacol rearrangement were studied.The experimental results showed that the reaction rate could be greatly increased with the addition of CO2.The activation energies evaluated were 81.1 kJ·mol-1 without CO2,and 87.1 kJ·mol-1 with CO2 initial pressure at 0.2 MPa,which showed no significant difference.The main by-product was confirmed to be 2,3-dimethyl-3-butadiene by GC/MS and the possible reaction mechanism was proposed.
An environmentally benign method to accelerate the pinacol rearrangement in high temperature liquid water by the addition of CO2 was proposed. The effects of CO2 initial pressure and temperature on the kinetics of pinacol rearrangement were studied. The experimental results showed that the reaction rate could be greatly increased with the addition of CO2. The activation energies evaluated were 81.1 kJ · mol^-1 without CO2, and 87.1 kJ · mol^-1 with CO2 initial pressure at 0.2 MPa, which showed no significant difference. The main by-product was confirmed to be 2,3-dimethyl-3-butadiene by GC/MS and the possible reaction mechanism was proposed.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2008年第1期96-100,共5页
CIESC Journal
基金
国家自然科学基金项目(20476089
20674068)
高等学校博士学科点专项科研基金项目(20050335099)~~
