Dehydrogenations selective coefficient

The lattice parameter also influenced the selectivity of the catalyst. At all temperatures the selectivity coefficient for dehydrogenation decreased with increasing lattice parameter, which indicates that the... 

Beretta, Forzatti and co-workers also studied the oxidative dehydrogenation of ethane and propane in short contact time reactors. Experiments were first performed in an isothermal, single channel reactor with an annular configuration (wherein the fluodynamics were simple, mass transfer coefficients were known and catalyst temperature was well controlled and easily measured, as illustrated in the following) the comparison between the results obtained in the absence of the catalyst with those obtained with increasing amounts of catalyst confirmed that olefins were uniquely produced via gas-phase reactions, while the Pt/Al203 catalyst was a non-selective oxidation catalyst (producing only COx, H2 and H2O). 

---