Claims
- 1. A catalyst composition described by the formula:
- Y.sub.a Sb.sub.b Mo.sub.c V.sub.d Z.sub.e O.sub.x
- wherein
- Y is lithium, cerium or a mixture thereof;
- Z is a metal selected from the group consisting of tungsten, magnesium, aluminum and nickel; and
- wherein
- a and d are numbers from about 0.01 to about 1.0;
- b and c are numbers from about 1 to about 9;
- e is a positive number from 0 to 1;
- x is a number which satisfies the valence requirements of the other elements present; and wherein at least some of the molybdenum in the catalyst is present in a valence state below +6.
- 2. The catalyst of claim 1 wherein Z is added to the catalyst as tungsten metal.
- 3. The catalyst of claim 2 wherein b and c are numbers from about 1.0 to about 8.0 and e is 0.001 to about 0.2.
- 4. The catalyst of claim 3 wherein Y is lithium.
- 5. The catalyst of claim 4 described by the formula Li.sub.0.1 SbMo.sub.3 V.sub.0.1 O.sub.x +W.degree..sub.0.06.
- 6. The catalyst of claim 3 wherein Y is cerium.
- 7. The catalyst of claim 6 described by the formula Ce.sub.0.1 SbMo.sub.3 V.sub.0.1 O.sub.x +W.degree..sub.0.06.
- 8. The catalyst of claim 1 wherein a is 0.01 to about 0.9.
- 9. The catalyst of claim 1 wherein d is about 0.01 to about 0.5.
- 10. The catalyst of claim 1 wherein e is 0 to about 0.2.
- 11. The catalyst of claim 1 wherein the catalyst is prepared by:
- (a) reacting an aqueous slurry containing at least molybdenum oxide with a reducing agent capable of reducing Mo.sup.+6 to obtain a slurry having a bluish color;
- (b) reacting the product of step (a) with antimony oxide to obtain a slurry having a darker color; and
- (c) recovering a solid catalyst from the mixture formed in step (b).
- 12. The catalyst of claim 1 wherein e is a number from 0.001 to 0.2.
REFERENCE TO RELATED APPLICATIONS
This is a continuation-in-part of our earlier application, Ser. No. 640,997, filed Dec. 15, 1975 now U.S. Pat. No. 4,021,427 issued May 1977.
US Referenced Citations (6)
Number |
Name |
Date |
Kind |
3435069 |
Bethell et al. |
Mar 1969 |
|
3773692 |
Hensel et al. |
Nov 1973 |
|
3966802 |
Takenaka et al. |
Jun 1976 |
|
3984353 |
Sergunkin et al. |
Oct 1976 |
|
4014925 |
Ferlazzo et al. |
Mar 1977 |
|
4021427 |
Dolhyj et al. |
May 1977 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
1319287 |
Jun 1973 |
GBX |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
640997 |
Dec 1975 |
|