A Composite Catalyst with a Lamellar Fe3O4/Pt/Fe3O4 Structure and Complementary Dual Catalytic Functions

A composite catalyst with a lamellar Fe3O4/Pt/Fe3O4 structure has been prepared from an Al67Pt7Fe26 (at.%) alloy by leaching with an aqueous 10 % NaOH solution. The lamellar Fe3O4/Pt/Fe3O4 phase exhibits significant catalytic performance as measured by activity and selectivity during the steam reforming of methanol superior to the catalytic performance of Pt obtained from Al2Pt and a conventional impregnated Pt/Fe3O4 catalyst under the same reaction conditions. It is clear that the Pt and Fe3O4 were primarily responsible for the catalysis of the decomposition of methanol and the water gas shift reaction , respectively. These two reactions work together in a complementary manner to facilitate the overall SRM reaction due to efficient the heat transfer characteristics of the lamellar Fe3O4/Pt/Fe3O4 structure. In this study, we demonstrate that a lamellar structure is available to couple two separate reactions to obtain a new catalytic function. In order to improve catalytic properties (stability, functionality), we combined with eutectic alloys and leaching treatment to obtain alternately binary phases with nano-architecture for catalytic materials. [GRAPHICS] .