Composite catalyst for removing mercaptans from liquids and gasses

摘要

A novel metal phthalocyanine derivative heterogeneous composite catalyst comprising a metal phthalocyanine complex and a bifunctional substrate which, with the phthalocyanine, forms the compositecatalyst. The bifunctional substrate provides a surface for the adsorption of the metal phthalocyanine complex, and possesses the properties of a moderate base, or has been modified in a way which imparts to the substrate the properties of a moderate base. Also disclosed is a method for oxidation of thiols and sulphides to inorganic thiosulphates or sulphates and mercaptans to organic disulphides in gaseous, oily or aqueous liquid wastes by means of the action of the metal phthalocyanine derivative heterogeneous composite catalyst.