Polymerization of ethylene using a high-activity Ziegler-Natta catalyst. I. Kinetic studies

Janeiro 1993

Factors affecting the particular shape of kinetic rate-time profiles in the polymerization of ethylene with a MgCl2-supported TiCl4 catalyst activated by Al(C2H5)3 have been investigated. Examination of the dependence of the polymerization rate on the concentration of Al(C2H5)3 resulted in a Langmuir-Hinshelwood rate law. Analysis of the polymerization rate as a function of the polymerization temperature gave about 46 kJ mol-1 for the overall activation energy. Examination of the rapid decay of the polymerization rate with time showed that this decay is represented better by a first-order decay law than by a second-order one

Autores da comunidade :

• 

  C

  Clemente Manuel Pedro Vicente Nunes

  ist10861

  Afiliações e fontes

  IST > CPQ

  Centro de Processos Químicos

  IST > DEQ

  Departamento de Engenharia Química

• 

  M

  Maria das Mercês Silva Mendes de Vasconcelos Marques

  ist20539

• 

  A

  Alberto Romão Dias

  ist10424

Journal of Polymer Science

209

218

31

1

chemical-engineering - Engenharia Química

eng - Inglês