Sythesis And Nature Of Heteropolytungstates And Tetrabutylammanium Charge-Transfer Complex

In recent years, heterophony acid compound attracted the attention of nationalresearchers as a photo catalyst in the photo catalytic field. Because heterophony acidcompound and catalyst does not have with other more specific advantages as a catalyst.So itcan be used to degrade polluting environmental protection and other fields a very broadapplication prospects in environmental protection and other fields a very broad applicationprospects.Charge-Transfer Complex–（TBA）₆[SiW₁₁Mn （H₂O）O₃₉]·24H₂O and TBA6[SiW₁₁O₃₉Al （H₂O）·22H₂O were synthesized by solid phase in room temperature. It wascharacterized by means of elementary analysis IR,UVandTG-DTG. The results indicate thatheterophony anion still remains its Keggin structure in super molecular compounds.Thenon-isothermal kinetic data were analyzed with the Used Coats-Redfern method, and Doylemethod. The mechanism function, kinetic parameters apparent activation energy E andpre-exponential factor lnA of the thermal decomposition were obtained.Synthesizde the TAB-Keggin structure heterophony compuunds β1-（TBA）₆H₂[SiW₁₁Mn（H₂O）O₃₉]·24H₂O as catalysts for the photo catalytic is used to degradate congo red dye.Synthesizde the TAB-Keggin structure heterophony compuunds β1-（TBA）₆H₂[SiW₁₁Al（H₂O）O₃₉]·22H₂O as catalysts for the photo catalytic reaction is used degradate metnylorange dye. Composite matetrials has a strong absorption prioerties in particular wavelenthrange by Uv-Vis.Congo red and methyl orange are used the photocatalytic degradationexperiments under Uv light irradiation.This thesis discusses the catalytic bleaching effect ofcatalyst dosage, initial concentration and acidity. And contrast catalytic effect on varietydifferent conditions and between ultraviolet and visible light irradiation of congo red andmetnyl orange. Experiments show that the synthesis of heterophony compounds on thedegradation of congo red and metnyl orange photo catalytic activity have good catalyticeffect.The decolorization rate of congo red is up to94.8%under the best conditions of initialconcentration for10mg/L,amout of catalyst for10mg/L,pH=1and UV irradiation in120min.The decolorization rate of methyl orange is up to91.2%under the best conditions of initial concentration for11mg/L,amout of catalyst for20mg/L,pH=1.5and UV irradiation in120min.