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کاتالیزور کاربردی a: عمومی 2012
جزئیات رویداد
اینستاگرام تی پی بین
همایش ، رویداد ، ژورنال
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  • redox properties and oxidation catalysis of potassium salts of transition metal-substituted α2-k8p2w17o61(m·oh2) (m = mnii, znii, feii, coii, cuii, and niii) wells-dawson heteropolyacids

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    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 1017
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     potassium salts of transition metal-substituted α2-k8p2w17o61(m·oh2) (m = mnii, znii, feii, coii, cuii, and niii) wells-dawson heteropolyacids were prepared to investigate their redox properties and oxidation catalysis. successful formation of α2-k8p2w17o61(m·oh2) catalysts was confirmed by ft-ir, 31p nmr, and icp-aes measurements. reduction potential and absorption edge energy of α2-k8p2w17o61(m·oh2) catalysts were determined by an electrochemical method and uv–vis spectroscopy in solution, respectively. absorption edge energy of α2-k8p2w17o61(m·oh2) catalysts decreased with increasing reduction potential of the catalysts. it was also found that reduction potential of α2-k8p2w17o61(m·oh2) catalysts increased and absorption edge energy of the catalysts decreased with decreasing tanaka electronegativity of substituted transition metal. vapor-phase benzyl alcohol oxidation was also carried out as a model reaction in order to probe oxidation catalysis of α2-k8p2w17o61(m·oh2) catalysts. yield for benzaldehyde increased with increasing reduction potential and with decreasing absorption edge energy of α2-k8p2w17o61(m·oh2) catalysts. reduction potential and absorption edge energy of α2-k8p2w17o61(m·oh2) catalysts could be utilized as a probe of oxidation catalysis of the catalysts.

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