## Abstract The thermodynamics of the reaction of an ethylene molecule with the Cp~2~TiCH~3~Cl/Al(CH~3~)~2~Cl system (Cp = ฮท~5~โC~5~H~5~), as a model for olefin polymerization with homogeneous ZieglerโNatta catalysts, was investigated via quantum mechanical DFT calculations. The comparison of the c
The role of diffusion in the Ziegler polymerization of ethylene
โ Scribed by J. R. Crabtree; F. N. Grimsby; A. J. Nummelin; J. M. Sketchley
- Publisher
- John Wiley and Sons
- Year
- 1973
- Tongue
- English
- Weight
- 966 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0021-8995
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๐ SIMILAR VOLUMES
Ethylene polymerization reactions with many Ziegler-Natta catalysts exhibit several features which differentiate them from polymerization reactions of โฃ-olefins: a relatively low ethylene reactivity, higher polymerization rates in the presence of โฃ-olefins, a high reaction order with respect to ethy
Grignard reagent PhMgCl was added during the preparation of the catalyst system MgCl 2 /di-n-butyl phthalate (DNBP)/TiCl 4 {AlEt 3 /diphenyl dimethoxyl silane (DPDMS) to improve its performance. It was found that PhMgCl could enhance both the activity of the catalyst and the isotacticity of the prod
As a model of olefin polymerization for a heterogeneous ZieglerแNatta catalyst, the mechanisms of the insertion of ethylene and propylene into R-Ti-ลฝ . q ลฝ . ลฝ . Cl AlH R s CH , C H are studied by ab initio self-consistent field SCF methods 2 2 2 3 3 7 and many-body perturbation theory. The structu