01729nas a2200241   4500008004100000022001400041245009900055210006900154260009500223300001000318490000800328520083300336653001001169653003001179653001901209653001901228653001801247653002901265653002601294100002701320700001701347856012301364       2012                        eng d  a0021-951700aIntramolecular selective hydrogenation of cinnamaldehyde over CeO2-ZrO2-supported Pt catalysts0 aIntramolecular selective hydrogenation of cinnamaldehyde over Ce  a525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USAbACADEMIC PRESS INC ELSEVIER SCIENCEcJAN  a31-400 v2853 a<p>Selective liquid phase hydrogenation of cinnamaldehyde is reported, for the first time, over CeO2, ZrO2, and CeO2-ZrO2-supported Pt catalysts. Cinnamyl alcohol is the selective product. These catalysts are highly active and selective even at 25 degrees C and found to be superior to most of the hitherto known supported Pt catalysts. Alkali addition (NaOH) has enhanced the performance of these catalysts. At an optimized reaction condition, 95.8% conversion of cinnamaldehyde and 93.4% selectivity of cinnamyl alcohol have been obtained. Acidity of the support (due to the presence of ZrO2 component) and higher electron density at Pt (due to CeO2 component) are attributed to be responsible for the superior catalytic activity of Pt supported on CeO2-ZrO2 composite material. (C) 2011 Elsevier Inc. All rights reserved.</p>10aalpha10abeta-Unsaturated aldehyde10aCeria-zirconia10aCinnamaldehyde10aHydrogenation10aPromotion by alkali ions10aSupported Pt catalyst1 aBhogeswararao, Seemala1 aSrinivas, D.  uhttps://library.ncl.res.in/content/intramolecular-selective-hydrogenation-cinnamaldehyde-over-ceo2-zro2-supported-pt-0