Gallium-based low-carbon alkane dehydrogenation catalyst as well as preparation method and application thereof

The invention discloses a gallium-based low-carbon alkane dehydrogenation catalyst as well as a preparation method and application thereof, and belongs to the technical field of petrochemical engineering catalysis. The catalyst takes gallium as an active center and vanadium or manganese as an auxiliary agent, and is prepared by dipping a carrier in a solution containing gallium and the auxiliary agent and then roasting at 300-1000 DEG C for 3-8 hours. According to the catalyst, vanadium or manganese is used as an auxiliary agent and has a synergistic effect with gallium, so that the dosage of gallium species is reduced, and the existence state of the gallium element is adjusted, so that the obtained catalyst has better propane dehydrogenation activity and selectivity. The catalyst is applied to propane dehydrogenation and isobutane dehydrogenation reactions, and has high selectivity and good stability of a target product. 本发明公开了一种镓基低碳烷烃脱氢催化剂及其制备方法和应用，属于石油化工催化技术领域。该催化剂以镓为活性中心，以钒或锰为助剂，通过将载体在含镓以及助剂的溶液中浸渍后于300～10