摘要
研究了均相体系Ｎｉ（ａｃａｃ）２－Ｅｔ２ＡｌＯＥｔ（Ａｌ／Ｎｉ＝２）催化丙烯二聚反应的动力学规律，推导出动力学方程也考察了 Ａｌ／Ｎｉ值对动力学规律的影响。发现存在一合适的 Ａｌ／Ｎｉ范围，在此范围内Ａｌ／Ｎｉ的变化不影响反应级数，而超出这一范围时反应情况变得复杂。还发现当 Ａｌ／Ｎｉ过大时，反应初速度不随Ａｌ／Ｎｉ的增大而变化。在此基础上探讨了反应体系中活性组分的变化情况。
The reaction kinetics of propene dimerization catalyzed by homogeneous system Ni(acac)2-Et2A1OEt in the liquid phase is investigated. The kinetic study shows that it is governed by the rate equation as follows, The influences of mole ratio Al/Ni on the initial rate of reaction and the rate equation are also studied, The rate equation holds when Al/Ni does not exceed 2.5. Beyond this limit the reaction becomes complicated, and the initial rate alters no longer with Al/Ni. Some interesting phenomena which show the relation between the mole ratio Al/Ni and the concentration of the catalytic active species are observed and discussed.
出处
《大连理工大学学报》
EI
CAS
CSCD
北大核心
1990年第6期667-674,共8页
Journal of Dalian University of Technology
基金
国家自然科学基金资助项目
关键词
丙烯
二聚反应
动力学
均相催化
reaction kinetics, dimerization, homogeneous catalysis, propene
