Characterization of Au-Cu, and Au-Ni Spinel Supported Catalysts for Partiar Oxidation of Methane and Methanol Synthesis

摘要

The aim of this work was the determination of the effect of support and gold promotion on physicochemical properties, and catalytic activity in partial oxidation of methane and methanol synthesis. The kind and amount of coke deposition formed during partial methane oxidation (POM) and methanol synthesis (MS) were determined. The influence of gold addition on physicochemical properties of mono- and bimetallic (Cu, Fe, Ni) spinel (MgAl2O4, FeAlO3, ZnAl2O4, CrAl3O6) supported catalysts was determined. It was found that modification by gold-copper or nickel supported catalysts have no strong influence on their reducibility. Catalytic activity almost does not change before and after gold introduction for POM reaction and increases significantly for MS reaction. In both cases gold promotion decreases coke formation and makes easier its oxidation.