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Issue 12, 2008
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Selective oxidation of glucose to gluconic acid over argon plasma reduced Pd/Al2O3

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Abstract

An argon glow discharge plasma approach was employed to reduce PdCl2 supported on γ-Al2O3 at ambient temperature. This environmentally benign reduction approach is energy efficient and economically effective. Characterizations using X-ray powder diffraction (XRD), transmission electron microscopy (TEM) and energy dispersive X-ray spectrometer (EDX) confirmed that the ionic Pd could be effectively reduced to the metallic state during this room temperature plasma reduction. The activities of the plasma reduced catalysts were tested for selective oxidation of glucose to gluconic acid with conventional hydrogen reduced catalysts as comparison. The plasma reduced catalyst followed by calcination under argon atmosphere at 500 °C exhibits a higher activity than the hydrogen thermally reduced one. Furthermore, the high stability against leaching of active metal into the reaction medium, observed in the plasma reduced catalysts, is of importance in the potential industrial application.

Graphical abstract: Selective oxidation of glucose to gluconic acid over argon plasma reduced Pd/Al2O3

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Publication details

The article was received on 25 Mar 2008, accepted on 23 Sep 2008 and first published on 24 Oct 2008


Article type: Paper
DOI: 10.1039/B804904A
Citation: Green Chem., 2008,10, 1318-1322
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    Selective oxidation of glucose to gluconic acid over argon plasma reduced Pd/Al2O3

    X. Liang, C. Liu and P. Kuai, Green Chem., 2008, 10, 1318
    DOI: 10.1039/B804904A

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