Open space for improvements of the kinetic investigation for fast reactions at high temperature (high T) and extremely short contact times is offered by the development of more adequate experimental tools. Kinetic data of catalytic CO combustion, partial oxidation of methane and oxidative dehydrogenation of propane, which had been obtained under controlled operating conditions and under the estimated influence of mass-transfer and homogeneous reactions, were fundamental for the correct interpretation of the more complex performance of an adiabatic structured reactor.