Catalyst for use in producing acetic acid, process for producing the catalyst, and process for producing acetic acid using the catalyst

摘要

A catalyst for use in producing acetic acid, comprising as essential components (a) palladium and (b) at least one compound selected from heteropolyacids and/or salts thereof, wherein (c) a vanadium element and/or molybdenum element is contained in a specific proportion. Acetic acid is produced from ethylene and oxygen by a gas phase single-stage reaction using the catalyst.