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Polymerization of butadiene with tii 4 ‐Al(i‐Bu) 3 Catalyst: Part II: Kinetic model development
Author(s) -
Loo C. C.,
Hsu C. C.
Publication year - 1974
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450520313
Subject(s) - catalysis , kinetic energy , polymerization , activation energy , logarithm , uncorrelated , 1,3 butadiene , polymer , chemistry , reaction rate constant , thermodynamics , polymer chemistry , materials science , analytical chemistry (journal) , kinetics , physics , organic chemistry , mathematics , quantum mechanics , mathematical analysis , statistics
Expressions for conversions, Mn and Mw have been derived for the proposed kinetic scheme for the polymerization of butadiene using Til 4 — Al(i‐Bu) 3 as catalyst. The rate constants k p , k ta and k d and the active sites were estimated from experimental data of conversion and molecular weight averages. The logarithm of both k p and k ta are linearly related to Al/Ti ratio. On the other hand, k d and C o appear to be uncorrelated with the reaction variables studied in this investigation. The activation energy for propagation reaction was found to be 12.05 ± 1.31 which agrees well with those reported previously. The small difference in the activation energies for k p and k ta accounts for the independence of the molecular weight of the polymer on the reaction temperature.