使用负载型金催化剂将甘油无碱一锅法化学催化转化为乳酸甲酯
Base-free, one-pot chemocatalytic conversion of glycerol to methyl lactate using supported gold catalysts.
作者信息
Pazhavelikkakath Purushothaman Rajeesh Kumar, van Haveren Jacco, Melián-Cabrera Ignacio, van Eck Ernst R H, Heeres Hero J
机构信息
Department of Chemical Engineering, University of Groningen, Nijenborgh 4, 9747 AG, Groningen (The Netherlands), Fax: (+31) 50-363-4479; Department of Sustainable Chemistry and Technology, Food and Biobased Research, Wageningen University and Research Centre, Bornseweilanden 9, 6700 AA, Wageningen, Wageningen (The Netherlands).
出版信息
ChemSusChem. 2014 Apr;7(4):1140-7. doi: 10.1002/cssc.201301105. Epub 2014 Mar 5.
We report an efficient one-pot conversion of glycerol (GLY) to methyl lactate (MLACT) in methanol in good yields (73 % at 95 % GLY conversion) by using Au nanoparticles on commercially available ultra-stable zeolite-Y (USY) as the catalyst (160 °C, air, 47 bar pressure, 0.25 M GLY, GLY-to-Au mol ratio of 1407, 10 h). The best results were obtained with zeolite USY-600, a catalyst that has both Lewis and Brønsted sites. This methodology provides a direct chemo-catalytic route for the synthesis of MLACT from GLY. MLACT is stable under the reaction conditions, and the Au/USY catalyst was recycled without a decrease in the activity and selectivity.
我们报道了一种高效的一锅法工艺，以市售超稳Y型沸石（USY）负载的金纳米颗粒为催化剂（160℃，空气，47巴压力，0.25M甘油，甘油与金的摩尔比为1407，10小时），在甲醇中将甘油（GLY）高效转化为乳酸甲酯（MLACT），产率良好（甘油转化率为95%时产率为73%）。使用同时具有路易斯酸和布朗斯特酸位点的USY-600沸石催化剂可获得最佳结果。该方法为从甘油合成乳酸甲酯提供了一条直接的化学催化途径。乳酸甲酯在反应条件下稳定，且金/USY催化剂可循环使用，活性和选择性均无下降。
Zotero 插件