• cob/open-cnts catalysts for hydrogen generation from alkaline nabh4 solution

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/01/01
    • تاریخ انتشار در تی پی بین: 1392/01/01
    • تعداد بازدید: 454
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     cob catalysts supported on carbon nanotubes with open tips (o-cnts) were successfully prepared and used in hydrogen production from nabh4 hydrolysis. the properties and morphologies of o-cnts supports and cob/o-cnts catalysts were characterized by ft-ir, xrd, sem–edx and tem, which showed that o-cnts possess different organic functional groups and many open tips and cob can be effectively loaded. compared with cob catalysts supported on carbon nanotubes with closed tips (c-cnts), cob/o-cnts exhibit significantly higher hydrogen production rate of up to 3041 ml min−1 g−1 under the same conditions. in the experiment, the effect of cob loading, catalyst supports, and operation temperature on hydrogen production rate was investigated in detail, which demonstrated that o-cnts possess higher cob loading than c-cnts. it was shown that the apparent activation energy of cob/o-cnts is 37.63 kj mol−1, which is obviously lower than 44.43 kj mol−1 of cob/c-cnts.

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