title: Raman study of the formation of beta silicomolybdic acid supported on silica, prepared by impregnation method.
abstract: Beta silicomolibdic acid/silica (β-SMA, a metastable form of silicomolybdic acid - H(4)SiMo(12)O(40)) forms by the impregnation of fumed silica into molybdenum solution obtained by hydrolyzation of MoO(2)Cl(2.) β-SMA/silica is found to be stable up to 300 °C after calcination for 1h due to the existence of an interlayer MoO(3) between silica surface and β-SMA. Structures of molybdenum species in the preparation process (including precursor solution) were analyzed by Raman spectroscopy and XRD.
authors.affiliation: Department of Environmental and Life Sciences, Toyohashi University of Technology, 2-1 Hibarigaoka, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan. nhhphuc@gmail.com
authors.forename: Nguyen Huu Huy
authors.initials: NH
authors.lastname: Phuc
authors.forename: Hironobu
authors.initials: H
authors.lastname: Ohkita
authors.forename: Takanori
authors.initials: T
authors.lastname: Mizushima
authors.forename: Noriyoshi
authors.initials: N
authors.lastname: Kakuta
mesh_terms: D006358:Hot Temperature; D008982:Molybdenum / Q000737:chemistry*; D017655:Silicon Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D012822:Silicon Dioxide / Q000737:chemistry*; D013059:Spectrum Analysis, Raman / Q000379:methods
chemical_list: D017655:Silicon Compounds; C013250:silicomolybdate; D012822:Silicon Dioxide; D008982:Molybdenum