Low temperature selective oxidation of methane using gold-palladium colloids

• DOI: 10.1016/j.cattod.2018.12.017
• Publication Date: 2018-12-12T13:06:57Z
• Authors: Rebecca McVicker; Nishtha Agarwal; Simon J. Freakley; Qian He; Sultan Althahban; Stuart H. Taylor; Christopher. J. K...; Graham J. Hutchings
• Keywords: Oxygenate

Methane upgrading into energy-dense liquid derivatives (such as methanol or mid-range hydrocarbons) is a highly desirable process to increase its utilisation. The selective oxidation of methane using hydrogen peroxide has been investigated using unsupported gold-palladium nanoparticles prepared using colloidal methods. The effect of the reaction conditions and the catalyst parameters have been systematically investigated. Poly(vinyl)pyrrolidone (PVP) stabilised Au-Pd colloids produce methyl hydroperoxide as the primary reaction product, which is subsequently converted to methanol with high oxygenate selectivity. The stability and re-use characteristics of the colloidal catalyst have also been assessed for methane oxidation with hydrogen peroxide.