01667nas a2200157   4500008004100000022001400041245010800055210006900163260011000232300001400342490000700356520096800363100002101331700002901352856012801381       2012                        eng d  a1463-926200aSimultaneous glycerol dehydration and in situ hydrogenolysis over Cu-Al oxide under an inert atmosphere0 aSimultaneous glycerol dehydration and in situ hydrogenolysis ove  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJUL  a2780-27890 v143 a<p>Among various catalysts screened, the Cu-Al oxide catalyst, prepared by a co-precipitation method, exhibited excellent activity for simultaneous glycerol dehydration and its hydrogenolysis without external hydrogen. Detailed characterization by XRD, XPS, HR-TEM, TPR, etc., showed evidence of Cu2+ in the form of CuO and CuAl2O4, along with Cu-0 and Cu1+ species, which are responsible for their multifunctional roles in glycerol APR, dehydration and hydrogenolysis reactions under inert conditions. This catalyst also presented consistent activity for a duration of 400 h for autogeneous hydrogenolysis of refined glycerol with 36% selectivity to 1,2-propanediol (1,2-PDO). Manipulating the temperature and feed flow rate conditions, meant that the selectivity to acetol and 1,2-PDO could be tailored as desired. Substantial enhancement in 1,2-PDO selectivity (75%) was achieved for an aqueous bio-glycerol feed over the same catalyst for 50 h of testing.</p>1 aMane, Rasika, B.1 aRode, Chandrashekhar, V.  uhttps://library.ncl.res.in/content/simultaneous-glycerol-dehydration-and-situ-hydrogenolysis-over-cu-al-oxide-under-inert-0