Novel Preparation Method for Keggin Type of Molybdophosphoric Blues——Glow Discharge H2-Plasma Solid-State Reduction Method

Chem. J. Chinese Universities

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Novel Preparation Method for Keggin Type of Molybdophosphoric Blues——Glow Discharge H2-Plasma Solid-State Reduction Method

LI Yang, CHU Wei*, CHEN Mu-Hua

Department of Chemical Engineering, Sichuan University, Chengdu 610065, China

Received:2006-10-09 Revised:1900-01-01 Online:2007-04-10 Published:2007-04-10
Contact: CHU Wei

Abstract

Abstract: A novel glow discharge plasma solid-state reduction route was developed to synthesize molybdophosphoric heteropoly blues(MB). The glow discharge plasma played a role of activating hydrogen mole-cules and generated a lot of active species which rapidly induced molybdophosphoric heteropoly acid(PMo₁₂) to form four-electron MB within several minutes. Analyses of the heteropoly blues via UV-Vis, FTIR, XRD and Py-IR confirmed that the materials retained not only the similar Keggin structures of their oxidized parents, but also exhibited more surface acidity due to protonation.

Key words: Molybdophosphoric heteropoly blues, Glow discharge H₂-plasma, Solid-state reduction, Keggin structure, Protonation

CLC Number:

O644

TrendMD:

LI Yang, CHU Wei*, CHEN Mu-Hua. Novel Preparation Method for Keggin Type of Molybdophosphoric Blues——Glow Discharge H2-Plasma Solid-State Reduction Method[J]. Chem. J. Chinese Universities, doi: .

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Novel Preparation Method for Keggin Type of Molybdophosphoric Blues——Glow Discharge H2-Plasma Solid-State Reduction Method

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