• liquid phase hydrogenation of crotonaldehyde over copper incorporated in mcm-48

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 859
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     a series of cu/mcm-48 catalysts is studied for the liquid phase hydrogenation of crotonaldehyde. copper is incorporated in mcm-48 following a classical hydrothermal synthesis or by wet impregnation of the mcm-48 precursor (before eliminating the directing agent) with cu(acac)2. the copper loading is in the 2–20 wt% range. characterization results from tpr and xrd indicate that copper crystals supported on mcm-48 surface coexist with copper incorporated in the mcm-48 walls. the presence of cu+ in mcm-48 is concluded from characterization with ftir of adsorbed co. this species would be the responsible for the relatively high selectivity of cu/mcm-48. these catalysts show approximately 50% of selectivity against 7% of cu/sio2(both values measured at 10% of conversion).

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