Catalyst and process for oxidizing or ammoxidizing n-butenes and/or isobutene

• US 3,895,051 A
• Filed: 04/27/1973
• Issued: 07/15/1975
• Est. Priority Date: 06/09/1972
• Status: Expired due to Term

• Current Assignee: Kazuo Fukuda, Kyoji Ohdan, Sumio Umemura, Terumi Hisayuki
• Original Assignee: Kazuo Fukuda, Kyoji Ohdan, Sumio Umemura, Terumi Hisayuki
• Inventors: Umemura, Sumio, Ohdan, Kyoji, Fukuda, Kazuo, Hisayuki, Terumi
• Primary Examiner(s): Brust, Joseph P.
• Application Number:
  US05/355,301
• Time in Patent Office: 809 Days
• Field of Search: 260/465.3,68E
• US Class Current: 558/324
• CPC Class Codes: B01J 23/30 Tungsten
• CPC Class Codes: C07C 253/26 containing carbon-to-carbon multiple bonds, e.g. unsaturated aldehydes
• CPC Class Codes: C07C 255/08 Acrylonitrile; Methacrylonitrile
• CPC Class Codes: C07C 45/35 in propene or isobutene
• CPC Class Codes: C07C 47/22 Acryaldehyde; Methacryaldehyde
• CPC Class Codes: Y02P 20/52 using catalysts, e.g. selective catalysts

Abstract

Hydrocarbon mixtures containing n-butenes and isobutene are oxidized or ammoxidized to 1,3-butadiene and methacrolein or methacrylonitrile and n-butenes are oxidized to 1,3-butadiene at an elevated temperature in a gaseous phase, in the presence of a catalyst having the empirical formula:

Claims

1. A PROCESS FOR SIMULTANEOUSLY PRODUCING 1,3 BUTADIENE AND METHACRYLONITRILE BY AMMOXIDIZING A HYDROCARBON MIXTURE CONSISTING ESSENTIALLY OF N-BUTENES AND ISOBUTENE AT 350 TO 550*C IN A GASEOUS PHASE IN THE PRESENCE OF A CATALYST SAID HYDROCARBON MIXTURE PREDOMINANTLY CONTAINING THE N-BUTENES AND ISOBUTENE SAID CATALYST CONSISTING OF AN OXIDE COMPOSITION CONTAINING THE ELEMENTS ACCORDING TO THE FORMULA:

2. A process as claimed in claim 1, wherein said ammoxidizing is carried out in the presence of a diluent gas, inactive for the ammoxidizing, selected from the group consisting of steam, nitrogen gas and carbon dioxide.

3. A process ad claimed in claim 1, represented by X wherein said metal is selected from the group consisting of calcium, zinc, cadmium, barium, strontium, magnesium and mercury.

4. A process according to claim 1, wherein said hydrocarbon mixture is a spent fraction prepared by extracting 1,3-butadiene from the C4 fraction of petroleum.