A novel polymer electrolyte based on oligo(ethylene glycol) 600, K₂PdCl₄, and K₃Fe(CN)₆

Abstract

New electrolytic systems were prepared by reacting K3Fe(CN)6 and K2PdCl4 in a mixture of water and poly(ethylene glycol) 600 (PEG). The reaction occurs in two steps: first a gel is formed, which then shrinks, releasing the solvent. The product thus obtained has the consistency of a smooth, solid plastic paste and is very stable. The influence of the reaction mixture on the structure, morphology, and conductivity of the products was investigated carrying out three preparations (I, II, III) at increasing ratio PEG 600/H2O. By FT-IR studies and analytical data it was concluded that these materials are inorganic-organic networks containing CN bridges between Fe and Pd atoms and PEG 600 bridges between Pd atoms. Scanning electron microscopy studies revealed that the morphology of polymers I, II, and III is significantly influenced by the conditions of the synthesis. Conductivity measurements made at different temperatures showed that polymers I, II, and III conduct ionically. The conductivity of polymer I, which was synthesized with the highest water/PEG 600 ratio, is on the order of 1.4x10-3 S/cm at 25°C

MgCl2-supported catalysts for the propylene polymerization: effects of triethers as internal donors on the activity and stereoselectivity

“…These results indicate that the correlations of structurecatalyst performance previously reported 11) for bulky diethers are not fully transferable to triether catalyst systems. In fact, as reported previously 16,17) the polyether conformation could change as a result of the metal ion coordination. In general, these structural modulations take place in such a way that a large number of oxygen atoms of the polyether backbone could join the metal ion coordination.…”

A Pt–Fe Carbon Nitride Nano‐electrocatalyst for Polymer Electrolyte Membrane Fuel Cells and Direct‐Methanol Fuel Cells: Synthesis, Characterization, and Electrochemical Studies

“…The correlative assignments of vibrational peaks are listed in Table 3. [22][23][24][25][26][27][28][29][30][31][32][33][34][35][36] The vibrational spectra are diagnostic of the following three main structural characteristics: a) modes associated with carbon nitride (CN) backbone material components; b) bands associated with cyanide bridging and terminal groups; c) peaks attributed to vibrations of ether, phenol, alcohol, and carboxyl groups on the surface of CN grains; d) metal-ligand modes associated with the active metal complexes supported on CN particles. The MIR and micro-Raman frequencies in the region 1800-1000 cm -1 show important spectral features associated with graphitic-like materials.…”

“…2, Table 3) suggests that the nitrogen not involved in the formation of carbon nitride bulk particles gives rise to two types of surface cyanide groups. [22][23][24] The first bridges Fe and Pt atoms, and the second is present as terminal free groups. Inspection of the FIR (Fig.…”

“…[20,21] A and B consist, respectively, of H 2 PtCl 6 and K 3 Fe(CN) 6 dissolved in an aqueous solution of sucrose. The processes take place by wellestablished reactions: [22][23][24]45] the Cl -ligand, which is a good leaving ion, may be substituted in PtCl 6 2-by either the nitrogen atom of Fe(CN) 6 3-cyanometalate, or the hydroxyl groups of sucrose.…”

Synthesis and characterization of [PEG400-alt-DEOS]/(δ-MgCl2)0.2597 complex

“…[5][6][7] Therefore great attention is now being addressed to the preparation of new inorganicorganic hybrid systems superior to the ''classic'' polymer electrolytes. [8][9][10][11][12][13] Until now, efforts to produce hybrid ionic conducting materials have generated four different groups of materials which fall into the following classes on the basis of their polymer matrixes: a) the linear inorganic-organic hybrid polymer electrolytes [14][15][16] ; b) the ORMOCERS-APE (ORganically Modified CERamicS As Polymer Electrolytes) inorganic-organic networks [8][9][10] ; c) the Z-IOPE (Zeolitic Inorganic Organic Polymer Electrolytes) [11][12][13] and d) the CPE (Composite Polymer Electrolytes). [5][6][7] Ion-conducting materials based on linear inorganicorganic polymers are prepared with the aim to modulate the physical properties of the products by coupling suitable amounts of inorganic and organic polymer moieties along the polymer chains.…”