PREPARATION OF CATALYST FOR SYNTHESIZING ACRYLIC ACID

PURPOSE:To prepare a catalyst with an improved yield on acrylic acid by a method wherein water and/or an alcohol are incorporated in a dried product obtd. from an aq. slurry of a catalytic ingredient and the mixture is molded after mixing and the molded catalyst is frozen and then, heat-treated. CON...

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Bibliographische Detailangaben
Hauptverfasser:	NAITO HIROYUKI, OTANI MASATO, OKITA MOTOMU, SHIOTANI TORU
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	PURPOSE:To prepare a catalyst with an improved yield on acrylic acid by a method wherein water and/or an alcohol are incorporated in a dried product obtd. from an aq. slurry of a catalytic ingredient and the mixture is molded after mixing and the molded catalyst is frozen and then, heat-treated. CONSTITUTION:In a method for preparing a catalyst contg. at least Mo and V as the ingredients for synthesizing acrylic acid by performing vapor phase catalytic oxidation of acrolein with molecular oxygen, a mixed soln. or an aq. slurry contg. the catalytic ingredients is dried and 5-60wt.% water and/or alcohol are added to and mixed with the obtd. dried product and after molding, it is frozen and heat-treated. As the result, a catalyst wherein fine hole area in the catalyst is increased and the yield of acrylic acid is improved, can be prepd.