01900nas a2200181   4500008004100000245010800041210006900149260000800218300001400226490000700240520123300247100002101480700002101501700001601522700002401538700002901562856012701591       2018                        eng d00aSingle pot selective hydrogenation of furfural to 2-methylfuran over carbon supported iridium catalysts0 aSingle pot selective hydrogenation of furfural to 2methylfuran o  cMAY  a2027-20370 v203 aVarious iridium supported carbon catalysts were prepared and screened for the direct hydrogenation of furfural (FFR) to 2-methyl furan (2-MF). Amongst these, 5% Ir/C showed excellent results with complete FFR conversion and highest selectivity of 95% to 2-MF at a very low H-2 pressure of 100 psig. Metallic (Ir degrees) and oxide (IrO2) phases of Ir catalyzed the first step hydrogenation involving FFR to FAL and subsequent hydrogenation to 2-MF, respectively. This was confirmed by XPS analysis and some control experiments. At a low temperature of 140 degrees C, almost equal selectivities of FAL (42%) and 2-MF (43%) were observed, while the higher temperature (220 degrees C) favored selective hydrodeoxygenation. At optimized temperature, 2-MF was formed selectively while higher pressure and higher catalyst loading favored ring hydrogenation of furfural rather than side chain hydrogenation. With the combination of several control experimental results and detailed catalyst characterization, a plausible reaction pathway has been proposed for the selective formation of 2-MF. The selectivity to various other products in FFR hydrogenation can be manipulated by tailoring the reaction conditions over the same catalyst.1 aDate, Nandan, S.1 aHengne, Amol, M.1 aHuang, K-W.1 aChikate, Rajeev, C.1 aRode, Chandrashekhar, V.  uhttps://library.ncl.res.in/content/single-pot-selective-hydrogenation-furfural-2-methylfuran-over-carbon-supported-iridium