作者:A. M. Chibiryaev、V. I. Anikeev、A. Yermakova、P. E. Mikenin、I. V. Kozhevnikov、O. I. Sal’nikova
DOI:10.1007/s11172-006-0367-z
日期:2006.6
Thermal isomerization of α-pinene in supercritical solvents, viz., ethanol, methanol, and propan-1-ol, was carried out, and differences in the rate and selectivity of the process were revealed. In supercritical ethanol the reaction rate increases sharply and the selectivity remains unchanged with an increase in the temperature (from 290 to 390 °C) or pressure (from 90 to 270 atm). The main reaction
α-蒎烯在超临界溶剂(即乙醇、甲醇和 1-丙醇)中的热异构化进行了,并揭示了该过程的速率和选择性的差异。在超临界乙醇中,随着温度(从 290 到 390 °C)或压力(从 90 到 270 个大气压)的增加,反应速率急剧增加并且选择性保持不变。主要的反应产物是柠檬烯、异构的别罗勒烯和芘烯。当α-蒎烯的转化率不高于50%时,1-丙醇对苎烯的选择性高于其他醇。在超临界乙醇 (430 °C, 120 atm, 140 s) 中,苎烯比 α-蒎烯更稳定(转化率为 8%)。