RT info:eu-repo/semantics/article
T1 Effect of Zn/Co initial preparation ratio in the activity of Double Metal Cyanide catalysts for propylene oxide and CO2 copolymerization
A1 Pinilla de Dios, María
A1 Andrés Iglesias, Cristina
A1 Fernández, Adrian
A1 Salmi, Tapio
A1 Galdámez Peña, José Román
A1 García Serna, Juan
AB 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% to 1.0%wt).
PB Elsevier
YR 2017
FD 2017
LK http://uvadoc.uva.es/handle/10324/23479
UL http://uvadoc.uva.es/handle/10324/23479
LA spa
NO European Polymer Journal, Marzo 2017, vol. 88, p. 280-291
DS UVaDOC
RD 22-nov-2024