Swelling of polyethylene particles and its relation to sorption equilibria under gas-phase polymerization conditions

2017 ◽  
Vol 134 (27) ◽  
pp. 45035 ◽  
Author(s):  
Martina Podivinská ◽  
Klára Jindrová ◽  
Josef Chmelař ◽  
Juraj Kosek
Keyword(s):  
Gas Phase ◽  
Polyethylene Particles ◽  
Gas Phase Polymerization ◽  
Sorption Equilibria ◽  
Polymerization Conditions

Multizone circulating reactor modeling for gas-phase polymerization. I. Reactor modeling

2004 ◽  
Vol 93 (3) ◽  
pp. 1042-1052 ◽  
Author(s):  
Fabiano A. N. Fernandes ◽  
Liliane M. F. Lona
Keyword(s):  
Gas Phase ◽  
Reactor Modeling ◽  
Gas Phase Polymerization

EXCITED STATES OF ACETYLENE AND THEIR ROLE IN PYROLYSIS

1958 ◽  
Vol 36 (1) ◽  
pp. 131-136 ◽  
Author(s):  
G. J. Minkoff
Keyword(s):  
Liquid Phase ◽  
Induction Period ◽  
Gas Phase ◽  
Recent Work ◽  
Excited States ◽  
Trans Configuration ◽  
Detailed Mechanism ◽  
Vinyl Polymerization ◽  
Gas Phase Polymerization ◽  
Kinetic Form

Previous theories of acetylene pyrolysis are reviewed in the light of recent work by Minkoff, Newitt, and Rutledge. It is shown that the relatively large rates observed at the beginning of the induction period do not agree with mechanisms involving the intervention of comparatively stable dimers. The required kinetic form is obtained, however, if a triplet diradical is produced on the surface in a bimolecular process, followed by gas phase polymerization, with some chain ending on the surface. The detailed mechanism closely resembles Flory's scheme for liquid phase vinyl polymerization. The shape of the radical is discussed, and it is suggested that the trans-configuration leads to polymerization, while the cis facilitates dehydrogenation.

scholarly journals Modeling of Continuous Stirred-Bed Reactor for Gas Phase Polymerization of Propylene.

2000 ◽  
Vol 26 (2) ◽  
pp. 286-292
Author(s):  
HIROSHI HAYAKAWA ◽  
MASATOSHI YOSHIDA ◽  
SHIGERU MATSUMOTO ◽  
YASUNOBU KANEKO ◽  
TAKEO SHIOJIMA
Keyword(s):  
Gas Phase ◽  
Gas Phase Polymerization

Gas Phase Polymerization of α-Olefins with Ziegler — Natta and Metallocene Catalysts: a Comparison

1995 ◽  
pp. 363-386 ◽  
Author(s):  
K. D. Hungenberg ◽  
J. Kerth ◽  
F. Langhauser ◽  
B. Marczinke ◽  
R. Schlund
Keyword(s):  
Gas Phase ◽  
Metallocene Catalysts ◽  
Gas Phase Polymerization
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