Several methods are used to synthesize bimetallic catalysts: - Co-Precipitation: A method where metal precursors are co-precipitated from a solution, followed by reduction to form the bimetallic catalyst. - Impregnation: Metal precursors are impregnated onto a support material, followed by calcination and reduction steps. - Chemical Vapor Deposition (CVD): A process where metal vapors are deposited onto a substrate to form thin bimetallic layers.