• the heterogenization of l-phenylalanine–ru(iii) complex and its application as catalyst in esterification of ethyl alcohol with acetic acid

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 786
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     a simple route is demonstrated for the efficient immobilization of silica with l-(n-α-acetylphenylalanine)–ruthenium(iii) complex. this catalyst was labelled as rhaphe–ru. the 29si mas nmr showed the presence of t3, t2, q3 and q4 silicon centers. the 13c mas nmr showed the presence of three chemical shifts consistent with the three carbon atoms of the propyl group. the catalytic performance of rhaphe–ru was tested in the esterification of ethyl alcohol. a conversion of 82% was achieved, with 100% selectivity towards ethyl acetate. the catalyst could be regenerated by washing with ethanol and drying at 110 °c for 24 h without significant loss in reactivity.

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