Metal Nanoparticles Supported on Al-MCM-41 via In Situ Aqueous Synthesis

Abstract EN

MCM-41 have been used to custom synthesize catalysts in because of the controllable properties, such as pore size, active phase incorporation, crystal size, and morphology, among others.

In this paper, a simple and versatile method for the incorporation of platinum, ruthenium, and palladium onto Al-MCM-41 mesoporous silica by direct inclusion of various precursors was studied.

M/Al-MCM-41 structure, textural properties, morphology, and elemental composition were analyzed.

The results obtained indicate that the Al-MCM-41 mesoporous-ordered structure was not affected by metallic particle incorporation.

High-surface areas were obtained (1131 m2/g).

Metallic nanoparticles dispersion on Al-MCM-41 was homogeneous for all samples and its particles sizes were between 6 nm to 20 nm.

Microscopy results show round shape particles in platinum and palladium samples; however, ruthenium catalysts exhibit a spherical and rod shapes.

Electrochemical testing for Pt/Al-MCM-41 showed electrocatalytic activity for H2 oxidation which indicates that these materials can be used as a catalyst in electrochemical devices.