An inorganic-organic hybrid supramolecular complex (H3O)4[(CoC14H12N2O10)1.5(SiW12O40)]·2H2O: synthesis, structure, properties, and application to catalytic elimination methanol

Abstract

An organic–inorganic hybrid supramolecular complex, (H3O)4[(CoC14H12N2O10)1.5(SiW12O40)]·2H2O, is constructed by tungstosilicate anion and 2,3-pyridinedicarboxylic acid cobalt coordination complex via intermolecular forces. Crystal data of the title complex: trigonal system, P-3c1 space group, a = 20.363(3) Å, b = 20.363(3) Å, c = 27.685(5) Å, α = 90 °, β = 90 °, γ = 90 °, V = 9942(3) Å3, Z = 4, Rint = 0.0383, R2 = 0.1645, GOOF = 1.083. The complex has been hydrothermally synthesized and characterized by Infrared spectra, TG-DTA, fluorescence, cyclic voltammetry, and single-crystal X-ray diffraction. The complex exhibits good catalytic activity for elimination of methanol in the gas phase, when the initial concentration of methanol is 2.76 g m−3, and flow rate is 10 mL min−1 at 140 °C, the elimination rate of methanol is 82.6% over 0.2 g of complex.