|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|49332||46736||2016||5 صفحه PDF||سفارش دهید||دانلود رایگان|
• A promising catalytic route for 1,2-propanediol preparation from glycidol is reported.
• Pd/C converts quantitatively glycidol to 1,2-PD with high selectivity.
• The use of solvent reduces drastically oligomer production.
The present work deals with the catalytic hydrogenolysis of glycidol to 1,2-propanediol. Reactions were carried out in a closed steel reactor using noble metal based heterogeneous catalysts (Pd, Rh, Pt) under hydrogen pressure (1–8 bars) in the temperature range of 25–140 °C. Pd/C shows the highest glycidol conversion (96%) under solvent free conditions after 24 h with high selectivity to 1,2-propanediol (93%). The effect of the solvent was also investigated and it was demonstrated that ethanol reduces drastically oligomer production enhancing selectivity up to 99% with a significant reaction time reduction (6 h). The Pd/C catalyst shows high recyclability and could be reused several times (9 cycles) without losses in activity and selectivity.
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Journal: Catalysis Communications - Volume 77, 5 March 2016, Pages 98–102