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- W2000960583 abstract "Abstract Kinetic studies of ethylene gas-phase homopolymerization have been carried out using a supported Ti-based Ziegler-Natta catalyst in the presence and absence of hydrogen. The dependence of the gas-phase polymerization rate on ethylene pressure may be described by the empirical relationship R = k eff · P n E , with n = 1.5–1.6. This effect of ethylene pressure on the rate is completely reversible. The action of hydrogen is also reversible but decreases the ethylene polymerization rate. However, progressively higher hydrogen pressures are incapable of halting the polymerization reaction completely, but reduce the reaction rate by ca . one-half. A reaction scheme for ethylene homopolymerization has been developed which accounts for the observed kinetic behavior. The scheme includes two equilibrium reactions: the activation of potential polymerization centers by ethylene and the reversible poisoning of active centers by hydrogen." @default.
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- W2000960583 date "1989-11-01" @default.
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- W2000960583 title "‘Homogeneous’ interpretation of ethylene polymerization kinetics with supported ziegler-natta catalysts" @default.
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- W2000960583 doi "https://doi.org/10.1016/0304-5102(89)80186-5" @default.
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