Effect of Zn/Co initial preparation ratio in the activity of double metal cyanide catalysts for propylene oxide and CO2 copolymerization

A1 Journal article (refereed)


Internal Authors/Editors


Publication Details

List of Authors: María Pinilla-de Dios, Cristina Andrés-Iglesias, Adrián Fernández, Tapio Salmi, José Román Galdámez, Juan García-Serna
Publication year: 2017
Journal: European Polymer Journal
Journal acronym: Eur. Polym. J.
Volume number: 88
Start page: 280
End page: 291
eISSN: 1873-1945


Abstract

Zn-Co double metal cyanide (DMC) catalysts were prepared by varying the initial amounts of ZnCl2
to analyze the influence of method of preparation on the different
copolymerization parameters. Synthesized catalysts were analyzed by
different techniques, infrared spectrometry and inductively coupled
plasma optical emission spectrometry, scanning electron microscopy, N2-physisorption
and X-ray diffraction to determine whether characteristics affect the
catalytic activity. The copolymers were characterized by infrared
spectrometry and gel permeation chromatography. Highly active catalyst
(2.5 kg polymer/g catalyst) was synthesized, low amounts of cyclic
carbonate byproduct were produced (0.4%) with medium crystallinity
catalysts and considerable amounts of K+ (0.4–1.0 wt%).


Keywords

Chemical Engineering

Last updated on 2019-14-10 at 04:59