The (1:1) Pt(2%)-Fe catalysts supported on gamma-Al2O3 (114), TiO2 (44), SiO2 (200) or MgO (93 m(2)/g) calcined 12 h/550degreesC in dry air and 4 h/550degreesC in dry N-2, were studied in the hydrogenation of 2-furaldehyde, cinnamaldehyde, or 3,5,5-trimethylcyclohexen-2-one (isophorone) run at 150,200 or 250degreesC, 1 atm, LSHV 2 h(-1), and (2:1 by mote) H)carbonyl compd. Supported Fe catalysts were inactive. At 150degreesC, the Pt/MgO gave 7% of furfuryl a;c., selectivity 71%; the Pt-Fe/MgO was 97% selective and gave 54.5% of the alc. At 150degreesC, the PtFe/MgO gave 43.2% of cinnamyl atc., selectivity 63%. For isophorone, the (1:1) Pt(2%)-Fe were too active and yielded hydrocarbons only. At 250degreesC, a (1:9) Pt(0.5%)-Fe/MgO gave 42.6% of homomenthol, selectivity 87%. Dry impregnation of MgO with aq. Fe(NO)(3) and H2PtCl6 gave the max, yield catalysts. Fe promoted Pt and made the catalyst more selective. Calcination of Pt-Fe/support catalyst precursors at 1050degreesC led to irreversible inactivity.