Sythesis And Non-isothermal Kinetics Of Heteropoly Acid Glycine Supramolecular Compounds

The design and synthesis of organic-inorganic hybrid supramolecular compounds basedon polyoxometalates has attracted great attention not only stems from their intriguing varietyof architectures and incomparable electronic versatility,but also from their potential applicati-ons in the fields as diverse as catalysis,medicine,molecular magnetism and material science.The time of structure scissor and self-assembly in synthesis of polyoxometalates iscoming,and now a quantity of polyoxometalates with novel structure were synthesized withthe organic templated directing.Polyoxometalates have received a lot of interest in researchbecause of their potential applications in the areas such ascatalysis,medicine and functionalmaterials.Synthesis of heteropoly acid and glycine supermolecule compounds α-K₂（HGly）₃[SiW₁₁Fe（H₂O）O₃₉]·24H₂O and α-K₄（HGly）₃[SiW₁₁Ti（H₂O）O₃₉]·4H₂O,and the use of infraredspectroscopy,UV spectroscopy,and other means of characterization.Thermal decompositionkinetics of supermolecular compounds α-K2（HGly）3[SiW11Fe（H2O）O39]·4H2O was studied byTG-DTG technique. The non-isothermal kinetic data were analyzed with Coats-Redfernmethod,and the Achar method.The mechanism function. kinetic parameters,apparentactivation energy E and pre-exponential factor lnA of the thermal decomposition wereobtained.