HIGHLY ACTIVE Ag/Al2O3 CATALYST AND PREPARATION METHOD THEREOF

Abstract

The present inventive concept relates to a method for preparing a silver-alumina catalyst using a solid-state impregnation method. According to the inventive concept, when Ag is supported on a γ-Al2O3 support, the Ag precursor and γ-Al2O3 are ground and mixed in the solid-state without the use of water, followed by calcination. As a result, the molten salt derived from the metallic silver (Ag) precursor in the calcination step exhibits low mobility, which limits its interaction with surface defects such as surface hydroxyl groups on γ-Al2O3. This limited interaction leads to the formation of bulk metallic Ag species, which exhibit superior oxidation performance in CO and NH3 oxidation reactions compared to Ag oxides present in Agw/γ-Al2O3 catalysts prepared by the conventional wet impregnation method.

Dependencies are inferred from the claim text.