Process for the production of a carbon supported catalyst

A process for the production of a carbon supported catalyst, which comprises the following steps:

• (a) precipitation of at least one metal oxide onto a surface of a carbon-comprising support by preparing an initial mixture, comprising the carbon-comprising support, at least one metal oxide precursor and an organic solvent, and spray-drying of the initial mixture to obtain an intermediate product,
• (a) loading of noble-metal-comprising particles onto the surface of the intermediate product in a liquid medium by deposition, precipitation and/or reduction of a noble-metal-comprising precursor with a reducing agent,
• (b) heat treating the catalyst precursor resulting from step (b) at a temperature higher than 400° C.
• wherein the spray-drying is carried out in a countercurrent mode.

A process for the production of a carbon supported catalyst, which comprises the following steps:

• (c) precipitation of at least one metal oxide onto a surface of a carbon-comprising support by preparing an initial mixture, comprising the carbon-comprising support, at least one metal oxide precursor and an organic solvent, and spray-drying of the initial mixture to obtain an intermediate product,
• (d) loading of noble-metal-comprising particles onto the surface of the intermediate product in a liquid medium by deposition, precipitation and/or reduction of a noble-metal-comprising precursor with a reducing agent,
• (e) heat treating the catalyst precursor resulting from step (b) at a temperature higher than 400° C.,
• wherein the spray-drying is carried out with an inert drying gas.