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Particle growth modeling of gas phase polymerization of butadiene
Author(s) -
Sun Jianzhong,
Eberstein Christopher,
Reichert KarlHeinz
Publication year - 1997
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19970411)64:2<203::aid-app1>3.0.co;2-v
Subject(s) - polymerization , monomer , particle (ecology) , materials science , thermal diffusivity , mass transfer , particle size , polymer chemistry , chemical engineering , heat transfer , phase (matter) , catalysis , polymer , thermodynamics , chemistry , composite material , chromatography , organic chemistry , oceanography , physics , engineering , geology
Butadiene polymerization in the gas phase is modeled by a polymeric multilayer model. Intraparticle mass and heat transfer effects are studied. The effects of catalyst size and diffusivity of butadiene on the radial profile of monomer concentration in polymeric particles and on the rate of particle growth are significant. Intraparticle temperature gradients do appear to be negligible under normal reaction conditions. External boundary layer heat effects are studied for various operation conditions. The model predicts that there is no significant temperature rise of the polymeric particles, even in the case of large catalyst particles. The effect of deactivation of active sites on the rate of particle growth is also studied. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 64: 203–212, 1997