• preparation of pd/c designed for chiral modified catalyst: comparison with pd/tio2 in enantioselective hydrogenation of α-phenylcinnamic acid

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 901
    • تعداد پرسش و پاسخ ها: 0
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     enantioselective hydrogenation of α-phenylcinnamic acid was investigated on pd/c catalysts prepared in our laboratory to compare activity and selectivity with those on commercial pd/c and pd/tio2 catalysts. the pd/c catalysts after the 353 k-h2-pretreatment exhibited satisfactory and comparable performances obtained with commercially available best ever pd/c by optimizing catalyst preparation. in contrast to pd/tio2, a high loading of pd is not necessary with pd/c, but only 5% loading on a certain activated carbon was found to result in high e.e. it is suggested that the optimum size or size-distribution of pd metal particle are different between the two supports, suggesting a support effect of this catalyst system.

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