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

Abstract

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.

Terpolymerizations of CO2, Propylene Oxide and DL‐Lactide Catalyzed by Zn‐Fe DMC Catalysts with Quaternary Ammonium Salts

“…The CN bond was moved to higher frequencies contrasted with DMC‐Blank. This demonstrates that CN − serves as a σ‐donor by contributing electrons to Fe 3+ , and act a π‐ electron donor by chelating to Zn 2+ . These FT‐IR consequences also certify the presence of unique practical groups in the Zn–Fe DMC catalysts.…”

Controlling coefficients of thermal expansion in thermoplastic materials: effects of zinc cyanide and ionic liquid

“…Zinc and iron cyanide complexes are known to be insoluble in imidazolium ionic liquids. 46 The moisture content and decomposition behaviour of the composites were measured using TGA to ensure that the materials were not hygroscopic and that exposure to ambient humidity causing variation in residual water content would not affect testing. No mass loss corresponding to water evaporation is observed (Fig.…”

Co-Ni Cyanide Bi-Metal Catalysts: Copolymerization of Carbon Dioxide with Propylene Oxide and Chain Transfer Agents

“…However, when the latter was followed exactly as it was described, the product was heterogeneous in color. This happened because it seems to have heterogeneous distribution of poly(tetrahydrofuran) (poly(THF)) over the Other metal cyanide complexes were also applied to copolymerize PO and CO 2 : Zn-Cr [35,36], Zn-Fe [36][37][38][39][40][41], Zn-Ni-Fe, Zn-Ni-Co [42], Zn-Mo, Zn-Mn, Zn-Cd [36], Zn-Ni [36,43,44], Co-Ni [43,45]. Co-Ni catalyst obtained by dehydration of Co(H 2 O) 2 [M(CN) 4 ] 4H 2 O seemed to us to be attractive as it copolymerized CO 2 and PO with relatively high productivity and produced no PC [45].…”

“…Other metal cyanide complexes were also applied to copolymerize PO and CO2: Zn-Cr [35,36], Zn-Fe [36][37][38][39][40][41], Zn-Ni-Fe, Zn-Ni-Co [42], Zn-Mo, Zn-Mn, Zn-Cd [36], Zn-Ni [36,43,44], Co-Ni [43,45]. Co-Ni catalyst obtained by dehydration of Co(H2O)2[M(CN)4] 4H2O seemed to us to be attractive as it copolymerized CO2 and PO with relatively high productivity and produced no PC [45].…”