Catalytic Polymerization Of Ethylene, 1,4-Butadiene, and Ethylene Oxide with No Solvent: Heat Effects, Kinetics, and Mechanisms

Abstract

The processes of solid polyethyleneoxide (PEO), polyethylene (PE), and trans-1,4-polybutadiene (PB) formation at solid catalysts in gas-solid systems with no solvent are studied. For a monomer pressure of 760 Torr, maximum rates of 1.5Á10 À7 , 1.2Á10 À5 , and 4Á10 À7 (mol/s cm 3 ) are fixed for C 2 H 4 O, C 2 H 4 , and 1,4-C 4 H 6 polymerization, respectively; therewith, potentialities of intensification of the reactions are not exhausted. The DH 0 298 values measured for the reaction (MON) (gas) ¼ (1/n)(-MON-) n(solid) (MON is a monomer molecule) are À107.5 AE 2.5, À112.5 AE 2.5, and À140.5 AE 3.8 (kJ/mol) for PE, PB, and PEO, respectively.