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活性炭載體的超聲波處理對(duì)Pt／C催化劑活性的影響分析
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O623.411

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Effect of Supersonic-Treatment for Active Carbon Supports on Activity of Pt/C Catalysts
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    摘要:

    通過(guò)對(duì)活性炭載體進(jìn)行不同條件的超聲波處理獲得了具有不同表面化學(xué)性質(zhì)的載體，使用比表面積（BET）、酸堿滴定等技術(shù)手段對(duì)載體的物理化學(xué)性質(zhì)進(jìn)行了表征。將經(jīng)過(guò)超聲波處理的活性炭載體制備成Pt／C催化劑，并將催化劑直接用于催化反應(yīng)，考察了活性炭載體的不同超聲波處理?xiàng)l件對(duì)Pt／C催化劑性能的影響。實(shí)驗(yàn)發(fā)現(xiàn)，活性炭載體經(jīng)過(guò)超聲波處理后，表面灰分含量、pH值和中孔孔容有較大的變化；使用經(jīng)過(guò)60min超聲波處理后中孔孔容較大的活性炭作為載體制備的Pt／C催化劑，在催化加氫反應(yīng)性能測(cè)試中顯示了最高的催化活性。在此基礎(chǔ)上，就活性炭載體的超聲波處理對(duì)Pt／C催化劑活性的影響進(jìn)行了討論。

    Abstract:

    A series of carbon supports with different surface chemical nature were obtained by supersonic-treatment on active carbon under various conditions, and characterized by BET and acid-base titration. The supersonic-treatment carbon supported Pt/C catalysts were prepared and the effect of the supersonic-treatment of active carbon on its activities was investigated with application in catalytic reaction. The results revealed that the contents of surface impurities, the value of pH and the mesoporous capacity had biggish change after supersonic treatment. Pt/C catalyst employed the 60 min supersonic-treatment active carbon supports with bigger mesoporous capacity showed the highest catalytic activity of hydrogenation reaction. Based on these results above, we discussed effect of supersonic-treatment for active carbon supports on activity of Pt/C catalysts.

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曾永康 楊喬森 孫潔 朱柏?zé)?潘麗娟 文永忠 張之翔.活性炭載體的超聲波處理對(duì)Pt／C催化劑活性的影響分析[J].鈦工業(yè)進(jìn)展,2007,24(6):42-45.

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  • 收稿日期:2007-03-12
  • 最后修改日期:2007-03-12
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