01769nas a2200265   4500008004100000022001400041245008200055210006900137260007300206300001200279490000800291520089000299653000601189653002301195653001101218653001601229653002801245653002001273100001701293700002501310700002101335700002401356700001701380856010601397       2011                        eng d  a0920-586100aRole of promoters in copper chromite catalysts for hydrogenolysis of glycerol0 aRole of promoters in copper chromite catalysts for hydrogenolysi  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcAPR  a447-4500 v1643 a<p>Various copper chromite catalysts with and without promoters were prepared by simultaneous co-precipitation and digestion technique and the role of promoters (Al, Ba and Zn) was investigated for hydrogenolysis of glycerol to 1,2-propylene glycol (1,2-PG) in both batch and continuous operations. Among various promoters studied, copper chromite catalyst with Ba as a promoter showed the highest activity and selectivity of 85% to 1,2-PG. This catalyst was found to be active for more than 800 h in a continuous operation also. Ammonia TPD results showed that barium promoted copper chromite catalyst had the highest acidity which facilitates the dehydration of glycerol to acetol which is the first step in hydrogenolysis of glycerol to 1,2-PG. The effect of barium content and variation in the promoters combination was also studied. (C) 2010 Elsevier B.V. All rights reserved.</p>10a110a2-Propylene glycol10aAcetol10aAmmonia TPD10aGlycerol hydrogenolysis10aSurface acidity1 aMane, R., B.1 aGhalwadkar, Ajay, A.1 aHengne, Amol, M.1 aSuryawanshi, Y., R.1 aRode, C., V.  uhttps://library.ncl.res.in/content/role-promoters-copper-chromite-catalysts-hydrogenolysis-glycerol-0