Claims
- 1. In an improved catalyst composition comprising reducible metal-containing oxides selected from the group consisting of at least one of Mn, Sn, In, Ge, Pb, Sb, Bi, Pr, Tb, Ce, Fe, and Ru oxides, the improvement which comprises further providing in the composition:
- (a) at least one member of the group consisting of Li and compounds thereof,
- (b) at least one member of the group consisting of boron and compounds thereof, and
- (c) at least one member of the group consisting of alkaline earth metals and compounds thereof.
- 2. The composition of claim 1 wherein the catalyst is a mixed oxide composition containing at least one reducible metal oxide from the group consisting of metal oxides of Mn, Sn, In, Ge, Pb, Sb, Bi, Pr, Tb, Ce, Fe and Ru, and satisfying the empirical formula:
- MLi.sub.a B.sub.b C.sub.c O.sub.x
- wherein M is selected from the group consisting of at least one of Mn, Sn, In, Ge, Pb, Sb, Bi, Pr, Tb, Ce, Fe, and Ru; B is boron; C is at least one alkaline earth metal; and wherein a is within the range of about 0.01 to about 10, b is within the range of about 0.1 to about 20, c is within the range of about 0.1 to about 100, and x is the number of oxygen atoms required by the valence states of the other elements.
- 3. The composition of claim 2 wherein b is within the range of about 0.1 to about 10.
- 4. The composition of claim 2 wherein c is within the range of about 1 to about 7.
- 5. The composition of claim 2 wherein the mixed oxide composition comprises reducible oxides of Mn.
- 6. The composition of claim 5 wherein M is Mn.
- 7. The composition of claim 2 wherein C is Mg.
- 8. The composition of claim 2 wherein C is Ca.
- 9. A mixed oxide composition containing Mn, Na, B and Mg which is characterized by:
- (a) The presence of the crystalline compound NaB.sub.2 Mg.sub.4 Mn.sub.2 O.sub.x and
- (b) a stoichiometric excess in the composition of Mn relative to at least one of the other elements of said crystalline compound.
- 10. The composition of claim 9 wherein a stoichiometric excess of Mn relative to boron is provided.
- 11. The composition of claim 10 wherein the mixed oxide composition contains excess amounts of Na, Mg and Mn relative to the amounts required by the amount of boron present to satisfy the stoichiometry of said crystalline compound.
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a division of Ser. No. 212357, filed Jun. 27, 1988, now U.S. Pat. No. 4,861,936, which is a division of Ser. No. 877574, filed Jun. 23, 1986, now U.S. Pat. No. 4,777,313, which is a continuation-in-part of U.S. patent application Ser. No. 06/683,296 filed Dec. 18, 1984, now abandoned, which in turn is a continuation-in-part of the following U.S. patent applications Ser. No. 600,654, filed Apr. 16, 1984, now U.S. Pat. No. 4,547,611, which in turn is a continuation-in-part of Ser. No. 522,937, filed Aug. 12, 1983, now U.S. Pat. No. 4,499,322 and of Ser. No. 522,936, filed Aug. 12, 1983, now U.S. Pat. No. 4,495,374; Ser. No. 600,655, filed Apr. 16, 1984, now abandoned, which in turn is a continuation-in-part of Ser. No. 522,937, filed Aug. 12, 1983, now U.S. Pat. No. 4,499,322 and of Ser. No. 522,936, filed Aug. 12, 1983, now U.S. Pat. No. 4,495,374.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
3501547 |
Nolan et al. |
Mar 1970 |
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Divisions (2)
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Number |
Date |
Country |
Parent |
212357 |
Jun 1988 |
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Parent |
877574 |
Jun 1986 |
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Continuation in Parts (5)
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Number |
Date |
Country |
Parent |
683296 |
Dec 1984 |
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Parent |
600654 |
Apr 1984 |
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Parent |
522937 |
Aug 1983 |
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Parent |
522936 |
Aug 1983 |
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Parent |
522937 |
Aug 1983 |
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