Synthesis of thermally stable mesostructured alumina nanocomposites and their applications to catalytic combustion of methane

摘要

Mesostructured MnOx-MOx-Al_2O_3(M = Ba orCs) catalysts have been synthesized by reverse microemulsion combined with hydrothermal treatment technique. Compared with the conventionally prepared materials, the microemulsion-derived catalysts exhibit a higher activity and higher stability for methane combustion. The Tio of the Mn-containing catalysts is lower than 500°C, suggesting the catalysts are active enough to ignite methane combustion in gas turbines. The effect of pore structure of the catalysts on their catalytic behaviors and the stability of the catalysts are also discussed.