Synthesis of porous catalyst Al/Al2O3-support stimulated by electromagnetic radiation of the microwave range
Identifying the role of microwave radiation in the synthesis of porous Al/γ-Al2О3 support used in catalysts, is a fundamentally new direction of research processes, stimulated by a microwave field. This paper presents the results of the synthesis of porous Al/γ-Al2О3 support actively absorbing electromagnetic radiation of the microwave range. Expected to further its use of catalysts for heterogeneous catalytic reactions, stimulated by the energy of the microwave field. The possibility of strong absorption of microwave radiation with a frequency of 2450 MHz samples obtained by hydrothermal treatment of industrial aluminum powders in the presence of the hydrogel of aluminum hydroxide, followed by sintering in the microwave. The average temperature of the sample mass Al/γ-Al2О3 support, achieved under the influence of microwave radiation of varying intensity, comparable to the temperature required for the occurrence of heterogeneous catalytic reactions in the gas phase, in traditional heating the catalyst mixture. It is established that the hydrothermal treatment of aluminum powders in the presence of pre-cooked the hydroxide is only needed for the chemical bonding of aluminum crystallites with the surrounding oxide shell. The properties of the carrier to absorb microwave energy determined by a combination of metal and oxide phases.