| http://www.w3.org/ns/prov#value | - The catalyst may be further impregnated using standard impregnating procedures and compounds such as phosphoric acids, ammonium phosphate salts and heteropolyphosphomolybdic acid upon such further impregnation with a phosphorous compound, the catalyst particles are preferably characterized by a phosphorous content of from about 0.5 weight % to about 5.0 weight percent.
|
