Preparation of a catalytically active composition for the gas phase oxidation of propylene to acrolein and acrylic acid

US4916103A · kind A · utility

Assignee

• BASF SE

Inventors

• Hans Martan · Bischofswerda, DE
• Matthias Schwarzmann · Schifferstadt, DE
• Karl-Heinz Boehning · Darmstadt, DE
• Heinz Dreyer · Lotte, DE

Key dates

• Filing date: Nov 25, 1988
• Grant date: Apr 10, 1990
• Expiry date: Nov 25, 2008

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2523/00
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A catalytically active composition for the gas phase oxidation of propylene to acrolein and acrylic acid, of the general formula EQU Mo.sub.12 Bi.sub.0.1-10 Fe.sub.0.8-12 [Co,Ni].sub.0.1-10 P.sub.0-2 A.sub.0-10 B.sub.0.001-1 O.sub.x where A is arsenic, antimony, tin, thallium, tungsten, an alkaline earth metal, zinc and/or chromium, B is at least one of the metals sodium, potassium, rubidium, cesium and/or indium and X is the number determined by the atomic valences of the individual elements, is prepared by introducing all or some of the iron and molybdenum in the form of dried pulverulent iron molybdate gel into an aqueous solution or suspension of the other constituents and gelating the mixture by stirring and possibly heating, then comminuting, drying at elevated temperatures and finally calcining.