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

被引：10
|
作者：
Pinilla-de Dios, Maria [1 ,2 ]
Andres-Iglesias, Cristina [1 ]
Fernandez, Adrian [1 ]
Salmi, Tapio [2 ]
Roman Galdamez, Jose [3 ]
Garcia-Serna, Juan [1 ]
机构：
[1] Univ Valladolid, Dept Chem Engn & Environm Technol, High Pressure Proc Grp, Valladolid 47011, Spain
[2] Abo Akad Univ, Johan Gadolin Proc Chem Ctr, Dept Ind Chem & React Engn, Turku 20500, Finland
[3] Ctr Tecnol REPSOL, C Agustin de Betancourt S-N, Mostoles 28935, Madrid, Spain
来源：
EUROPEAN POLYMER JOURNAL | 2017年 / 88卷
关键词：
DMC; Carbon dioxide; Zinc hexacyanocobaltate; Ring opening polymerization; Polypropylene carbonate; Polyurethanes; RING-OPENING POLYMERIZATION; CARBON-DIOXIDE; COMPLEXING AGENTS; EPOXIDES; STABILIZATION; DMC;
D O I：
10.1016/j.eurpolymj.2017.01.028
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
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, N-2-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%). (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：280 / 291
页数：12
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