کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
39991 | 45842 | 2014 | 6 صفحه PDF | دانلود رایگان |
• Easy preparation of a novel magnetic nanocatalyst.
• Simple catalyst removing by an external magnetic field.
• The lowest catalyst loading reported for this transformation.
• The use of complicated and expensive organic ligands, used in related processes, is avoided.
A new catalyst derived from osmium has been prepared, fully characterized and tested in the dihydroxylation of alkenes. The catalyst was prepared by wet impregnation methodology of OsCl3·3H2O on a commercial micro-magnetite surface. The catalyst allowed the reaction with one of the lowest osmium loadings for a heterogeneous catalyst and was selective for the monodihydroxylation of 1,5-dienes. Moreover, the catalyst was easily removed from the reaction medium by the simple use of a magnet. The selectivity of catalyst is very high with conversions up to 99%. Preliminary kinetics studies showed a first-order reaction rate with respect to the catalyst.
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Journal: Applied Catalysis A: General - Volume 470, 30 January 2014, Pages 177–182