The catalytic cracking and dehydrogenation of lower hydrocarbon gas using "Neobead" and silica-alumina have been studied by the pulse flow microreactor, over the reaction temperature range of 500∼700[℃] and the time factor 1∼7[sec].
The activities of these two catalysts for the cracking and dehydrogenation reactions were compared and discussed.
Under the conditions such as reaction temperature, 650[℃] and time factor, 4.6[sec] for Neobead and 650[℃], 4.05[sec] for silica-alumina, the initial activities and fouling characteristics were checked, and these leads to the conclusion that Neobead is preferable to dehydrogenation of propane and silica-alumina, to cracking of propane.
The optimum reaction temperatures and time factors of olefine formation were found to be 650 ℃ and 1.0 second for "Neobeads"（alumina catalyst）; and 700 ℃ and 1.0 second for silica-alumina catalyst.