Facile synthesis of poly(ether carbonate)s via copolymerization of CO2 and propylene oxide under combinatorial catalyst of rare earth ternary complex and double metal cyanide complex

2011 ◽  
Vol 50 (2) ◽  
pp. 362-370 ◽  
Author(s):  
Yanlei Dong ◽  
Xianhong Wang ◽  
Xiaojiang Zhao ◽  
Fosong Wang
Keyword(s):  
Rare Earth ◽  
Propylene Oxide ◽  
Ternary Complex ◽  
Cyanide Complex ◽  
Facile Synthesis ◽  
Metal Cyanide

scholarly journals Fabrication and characterization of the ternary composite catalyst system of ZnGA/RET/DMC for the terpolymerization of CO2, propylene oxide and trimellitic anhydride

RSC Advances ◽  
2021 ◽  
Vol 11 (15) ◽  
pp. 8782-8792
Author(s):  
Ningzhang Liu ◽  
Chuanhai Gu ◽  
Qinghe Wang ◽  
Linhua Zhu ◽  
Huiqiong Yan ◽  
...  
Keyword(s):  
Propylene Oxide ◽  
Ternary Complex ◽  
Catalyst System ◽  
Composite Catalyst ◽  
Trimellitic Anhydride ◽  
Ternary Composite ◽  
Metal Cyanide ◽  
Fabrication And Characterization ◽  
Poly Propylene

For poly(propylene carbonate trimellitic anhydride) with good yield, thermal stability and high molecular weight, a catalyst of zinc glutarate/rare earth ternary complex/double metal cyanide was used for terpolymerization of CO2, propylene oxide and trimellitic anhydride.

Promoting Effect of Metal Promoters on Fe(II)-Zn-Based Double Metal Cyanide Complex Catalysts for Biodiesel Synthesis

2011 ◽  
Vol 236-238 ◽  
pp. 3041-3045 ◽  
Author(s):  
Ling Mei Yang ◽  
Peng Mei Lv ◽  
Zhen Hong Yuan ◽  
Wen Luo ◽  
Zhong Ming Wang ◽  
...  
Keyword(s):  
Rare Earth ◽  
Transition Metal ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Molecular Formula ◽  
Cyanide Complex ◽  
X Ray Diffraction ◽  
X Ray ◽  
Metal Cyanide ◽  
Biodiesel Synthesis

Fe(II)-Zn-based double metal cyanide complex catalysts modified with rare earth metal or transition metal promoters(lanthanum, cerium, zirconium, manganese) for the production of biodiesel were prepared, and the effect of the addition of different metal promoters on the characteristics of the catalyst was studied by using X-ray diffraction (XRD), BET, ICP and Infrared techniques .The experiment results show that the Fe(II)-Zn-based catalyst promoted with 1 wt.% of La(NO3)3·nH2O exhibits the highest catalytic activity for the reaction, being as high as 99.3% of the yield of fatty acid methyl esters (FAME). Fe(II)-Zn-based catalysts have a tentative molecular formula: K2Zn3[Fe(CN)6]2·xH2O· (t-BuOH), where x=3-9 determined by using elemental analysis and ICP. It has been shown that the molecular formula of Fe(II)-Zn-based double metal cyanide complex catalysts did not change by adding 1 wt.% of rare earth metal or transition metal promoters. X-ray diffraction and BET results showed that Fe(II)-Zn-based catalysts with 1 wt.% of metal promoters salts exhibit smaller particle size, higher surface area than the Fe(II)-Zn catalyst ,which may be related to the higher activity of the catalysts.

Atom-Exchange Coordination Polymerization of Carbon Disulfide and Propylene Oxide by a Highly Effective Double-Metal Cyanide Complex

2008 ◽  
Vol 41 (5) ◽  
pp. 1587-1590 ◽  
Author(s):  
Xing-Hong Zhang ◽  
Fei Liu ◽  
Xue-Ke Sun ◽  
Shang Chen ◽  
Bin-Yang Du ◽  
...  
Keyword(s):  
Carbon Disulfide ◽  
Propylene Oxide ◽  
Cyanide Complex ◽  
Coordination Polymerization ◽  
Metal Cyanide ◽  
Highly Effective

Selective copolymerization of carbon dioxide with propylene oxide catalyzed by a nanolamellar double metal cyanide complex catalyst at low polymerization temperatures

Polymer ◽  
2011 ◽  
Vol 52 (24) ◽  
pp. 5494-5502 ◽  
Author(s):  
Xing-Hong Zhang ◽  
Ren-Jian Wei ◽  
Xue-Ke Sun ◽  
Jiang-Feng Zhang ◽  
Bin-Yang Du ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Propylene Oxide ◽  
Cyanide Complex ◽  
Complex Catalyst ◽  
Metal Cyanide

Ring-Opening Polymerization of Propylene Oxide Catalyzed by a Calcium-Chloride-Modified Zinc-Cobalt Double Metal-Cyanide Complex

2010 ◽  
Vol 211 (11) ◽  
pp. 1229-1237 ◽  
Author(s):  
Yi-Jun Huang ◽  
Xing-Hong Zhang ◽  
Zheng-Jiang Hua ◽  
Shi-Liang Chen ◽  
Guo-Rong Qi
Keyword(s):  
Calcium Chloride ◽  
Propylene Oxide ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Cyanide Complex ◽  
Metal Cyanide

Copolymerization of CO2, propylene oxide, and itaconic anhydride with double metal cyanide complex catalyst to form crosslinked polypropylene carbonate

e-Polymers ◽  
2021 ◽  
Vol 21 (1) ◽  
pp. 854-868
Author(s):  
Liang Luo ◽  
Wen-Zhen Wang ◽  
Li Wang ◽  
Lei-Lei Li ◽  
Yi-Le Zhang ◽  
...  
Keyword(s):  
Weight Loss ◽  
Propylene Oxide ◽  
Average Molecular Weight ◽  
Polymerization Process ◽  
High Catalytic Activity ◽  
Cyanide Complex ◽  
Scanning Calorimetry ◽  
Complex Catalyst ◽  
Metal Cyanide ◽  
Itaconic Anhydride

Abstract In this study, a high-activity Zn–Co double metal cyanide complex was synthesized and used to catalyze the ternary polymerization of carbon dioxide, propylene oxide, and itaconic anhydride to produce a new class of polypropylene carbonates characterized by excellent performance and low ether content. The number average molecular weight of the terpolymer was as high as 2.14 × 105 g·mol−1, and the polydispersity index was as high as 1.58. In the case of PPCIAn3, the 5% weight loss temperature increased by 70°C, the total weight loss temperature increased by 100°C, the tensile strength increased by 6.6 MPa, and the elongation at break decreased to 14.5% with respect to traditional polypropylene carbonate. The apparent efficiency of the catalyst was as high as 45.79 gpolymer/gcatalyst, indicating its high catalytic activity. 1H-NMR spectrometry, gel permeation chromatography, differential scanning calorimetry, thermogravimetric analysis, and in situ Fourier-transform infrared spectroscopy were used to characterize the polymerization process and the structural properties of the obtained terpolymers.

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