EFFICIENCY OF PT-FE AL2O3 CATALYSTS FOR ACTIVATION OF C-H BONDS IN PROPANE/

The influence of the preparation procedure of low-percentage Pt-Fe/Al2 O3 catalysts ([Pt] = 0.15 at. %, gamma = Fe/Pt = 1-300) on their effic iency in the activation of C-H and C-C bonds in propane is studied. Th e maximum efficiency was shown to be attained using two approaches: (1 ) the choice of the optimal Fe/Pt atomic ratios or (2) the preliminary oxidative thermal treatment of the modified support. When iron is use d as a modifying additive, the catalysts can be prepared that provide a high selectivity of the structure-insensitive reaction of propane de hydrogenation (up to 97-98%), which exceeds the selectivity of the unm odified platinum-containing catalysts in the same reaction. The method of preparation, the pretreatment conditions of Fe(NO3)(3)/Al2O3, and the gamma values were also found to influence the stability of the cat alysts studied.