The decatungstomolybdoniobogermanic heteropoly acid H5[GeW10MoNbO40]·20H2O has been prepared for the first time. The optimal proportion of the solutions of the component and the pH of the synthesis reaction are given. The product was characterized by chemical analysis, conductometric and potentiometric titration, IR, UV, XRD, 183W NMR and TG-DTA. The IR, UV, XRD and 183WW NMR indicate that H5[GeW10MoNbO40]·20H2O possesses the Keggin structure. The TG-DTA curve shows the sequence of water loss in the acid, the amount of the loss as well as the thermostability of the acid.
Bibliographical noteFunding Information:
Scott Arnold from Forests NSW is thanked for providing access to the growth data. Numerous other Forests NSW staff are also thanked for providing site access. Dr Phil West provided useful suggestions for the project. Dr Kevin Glencross is thanked for his discussions on the topic of plantation growth. Dr Carolyn Raymond provided useful advice and two anonymous referees are thanked for their meticulous study of drafts of this paper and their helpful comments. The Australian Research Council (ARC) and SF NSW provided support for the PhD project from which this research has come.
- Deca-tungstomolybdoniobogermanic acid
- Heteropoly acid