Structure-induced catalytic activity of Co–Zn double-metal cyanide complexes for terpolymerization of propylene oxide, cyclohexene oxide and CO2

RSC Advances ◽  
2015 ◽  
Vol 5 (24) ◽  
pp. 18196-18203 ◽  
Author(s):  
Joby Sebastian ◽  
Srinivas Darbha
Keyword(s):  
Catalytic Activity ◽  
Propylene Oxide ◽  
Rhombohedral Structure ◽  
Cyclohexene Oxide ◽  
Metal Cyanide ◽  
Cyanide Complexes

Co–Zn DMC having monoclinic/rhombohedral structure were superior to the cubic complex for terpolymerization of propylene oxide, cyclohexene oxide and CO2.

Zn(II)-Co(III)-Fe(III) multi-metal cyanide complexes as highly active catalysts for ring-opening polymerization of propylene oxide

2007 ◽  
Vol 15 (5) ◽  
pp. 393-395 ◽  
Author(s):  
Seung Hoon Byun ◽  
Hyun Suk Seo ◽  
Sang Hyun Lee ◽  
Chang-Sik Ha ◽  
Il Kim
Keyword(s):  
Propylene Oxide ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Metal Cyanide ◽  
Highly Active ◽  
Cyanide Complexes

scholarly journals Synthesis of Zn–Fe double metal cyanide complexes with imidazolium-based ionic liquid cocatalysts via ball milling for copolymerization of CO2 and propylene oxide

RSC Advances ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 6565-6571 ◽  
Author(s):  
Jia Shi ◽  
Zaifeng Shi ◽  
Huiqiong Yan ◽  
Xianghui Wang ◽  
Xiaopeng Zhang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ball Milling ◽  
Propylene Oxide ◽  
Milling Process ◽  
Metal Cyanide ◽  
Ball Milling Process ◽  
Cyanide Complexes

Zn–Fe DMC complexes with imidazolium-based ionic liquid cocatalysts were prepared by a clean and efficient ball milling process for the copolymerization of CO2 and propylene oxide.

Double metal cyanide complexes synthesized by solvent-free grinding method for copolymerization of CO2 and propylene oxide

2011 ◽  
Vol 123 (2) ◽  
pp. 977-985 ◽  
Author(s):  
Wuyuan Zhang ◽  
Qiang Lin ◽  
Yi Cheng ◽  
Lingbin Lu ◽  
Bo Lin ◽  
...  
Keyword(s):  
Propylene Oxide ◽  
Solvent Free ◽  
Metal Cyanide ◽  
Grinding Method ◽  
Cyanide Complexes

Copolymerization of Carbon Dioxide and Propylene Oxide with Multi-Metal Cyanide Complexes as Catalyst

2013 ◽  
Vol 646 ◽  
pp. 3-7 ◽  
Author(s):  
Ling Bin Lu ◽  
Wu Yuan Zhang ◽  
Qiang Lin ◽  
Li Sha Pan ◽  
Su Juan Pang ◽  
...  
Keyword(s):  
Propylene Oxide ◽  
Metal Salts ◽  
Molar Ratio ◽  
High Catalytic Activity ◽  
Metal Cyanide ◽  
Metal Element ◽  
Cyanide Complexes ◽  
Poly Propylene ◽  
Alternating Copolymerization ◽  
Catalyst Efficiency

A novel and green mechanochemical technique, the grinding-based method, was applied for synthesis of multi-metal cyanide (MMC) complexes. In order to discovery the effect of metal element on structure and catalyst efficiency, the obtained three MMCs were made from deferent three metal salts groups, which including ZnCl2 to NiCl2 to K3Fe(CN)6 molar ratio of 4:3:1 (MMC-1), ZnCl2 to NiCl2 to K3Co(CN)6 molar ratio of 4:4:1 (MMC-2), and ZnCl2 to NiCl2 to K4Fe(CN)6, respectively. And three MMCs were further used for copolymerization of CO2 and propylene oxide. FTIR and 1H NMR results shown, the alternating copolymerization obtained anticipated poly(propylene carbonate) with high catalytic activity. Comparing to the conventional solvent-based synthesis, the strikingly efficient and practically applicable grinding-based method reveals clear merits for syntheses of MMC complexes.

scholarly journals Ring-Opening Copolymerization of Cyclohexene Oxide and Cyclic Anhydrides Catalyzed by Bimetallic Scorpionate Zinc Catalysts

Polymers ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1651
Author(s):  
Felipe de la Cruz-Martínez ◽  
Marc Martínez de Sarasa Buchaca ◽  
Almudena del Campo-Balguerías ◽  
Juan Fernández-Baeza ◽  
Luis F. Sánchez-Barba ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Reaction Mechanism ◽  
Catalytic System ◽  
Phthalic Anhydride ◽  
Ring Opening ◽  
High Selectivity ◽  
Zinc Complexes ◽  
Cyclohexene Oxide ◽  
Reaction Conditions ◽  
Cyclic Anhydrides

The catalytic activity and high selectivity reported by bimetallic heteroscorpionate acetate zinc complexes in ring-opening copolymerization (ROCOP) reactions involving CO2 as substrate encouraged us to expand their use as catalysts for ROCOP of cyclohexene oxide (CHO) and cyclic anhydrides. Among the catalysts tested for the ROCOP of CHO and phthalic anhydride at different reaction conditions, the most active catalytic system was the combination of complex 3 with bis(triphenylphosphine)iminium as cocatalyst in toluene at 80 °C. Once the optimal catalytic system was determined, the scope in terms of other cyclic anhydrides was broadened. The catalytic system was capable of copolymerizing selectively and efficiently CHO with phthalic, maleic, succinic and naphthalic anhydrides to afford the corresponding polyester materials. The polyesters obtained were characterized by spectroscopic, spectrometric, and calorimetric techniques. Finally, the reaction mechanism of the catalytic system was proposed based on stoichiometric reactions.

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