Catalytic composition

• US 4,711,867 A
• Filed: 02/27/1986
• Issued: 12/08/1987
• Est. Priority Date: 03/07/1985
• Status: Expired due to Fees

• Current Assignee: Mitsubishi Kasei Corp. (Mitsubishi Chemical Group Corp.)
• Original Assignee: Mitsubishi Chemical Industries Limited (Mitsubishi Chemical Group Corp.)
• Inventors: Oshima, Kazunori, Ihara, Tatsuya, Hatano, Masakatsu, Kiyono, Kenichi
• Primary Examiner(s): Metz, Andrew
• Assistant Examiner(s): Wright, William G.
• Application Number:
  US06/833,279
• Time in Patent Office: 649 Days
• Field of Search: 502/201, 502/204, 502/205, 502/206
• US Class Current: 502/205
• CPC Class Codes: B01J 23/31 combined with bismuth
• CPC Class Codes: B01J 23/8876 Arsenic, antimony or bismuth
• CPC Class Codes: B01J 23/8878 Chromium
• CPC Class Codes: B01J 23/8885 containing also molybdenum
• 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: Y02P 20/52 using catalysts, e.g. selective catalysts

Abstract

A catalystic composition suitable for producing acrylonitrile from propylene, ammonia and oxygen (or oxygen-containing gas), which composition is represented by the following formula:

(Mo).sub.a (W).sub.b (Bi).sub.c (Pb).sub.d (B).sub.e (Sb).sub.f (X).sub.g

(O)_h

(where: X is chromium or iron; a, b, c, d, e, f, g and h denote respectively number of atoms for molybdenum, tungsten, bismuth, lead, boron, antimony, X and oxygen, and wherein, if it is given that a+b=12, 0≦b≦7, 0.4≦c≦7, 2≦d≦12, 0.2/22≦e/a≦40/22, 0≦f/a≦25/22, and 0≦g/a≦3/22; and h denotes the number of oxygen necessary for satisfying the atomic valence for the individual constituent elements other than oxygen).

Claims

1. A catalyst composition for the production of acrylonitrile from propylene, ammonia and oxygen or an oxygen-containing gas of the formula:

space="preserve" listing-type="equation">(Mo).sub.a (W).sub.b (Bi).sub.c (Pb).sub.d (B).sub.e (Sb).sub.f (X).sub.g (O).sub.h

wherein X is chromium or iron;

a, b, c, d,e, f, g and h respectively denote the number of atoms of molybdenum, tungsten, bismuth, lead, boron, antimony, element X and oxygen, wherein, given thata+b=12,

space="preserve" listing-type="equation">≦

b≦

7,

space="preserve" listing-type="equation">0.4≦

c≦

7,

space="preserve" listing-type="equation">2≦

d≦

12,

space="preserve" listing-type="equation">0.2/22≦

e/a≦

40/22,

space="preserve" listing-type="equation">0≦

f/a≦

25/22,

space="preserve" listing-type="equation">0≦

g/a≦

3/22; and

h denotes the number of oxygen atoms necessary to satisfy the valencies of the remaining constituent elements of the catalyst.

2. The catalyst composition of claim 1, wherein said catalyst is supported on a carrier selected from the group consisting of silica, alumina, titania and silicon carbide.

3. The catalyst composition of claim 1, wherein, given thata+b=12,