초록

One aspect of the present invention relates to a catalytic compound of anion-modified metal oxides doped with metal ions. Another aspect of the present invention relates to a method of isomerizing an alkane or alkyl moiety.

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1. A catalytic compound represented by the formula: 1 /R 4 /R 2 -R 3 wherein:R 1 is a metal, metal alloy, or bimetallic system;R 2 is any metal dopant;R 3 is a metallic oxide or mixtures of any metallic oxide;R 4 is WO x , MoO x , SO 4 2− or PO 4 3− ; andx is a whole o

1. A catalytic compound represented by the formula: 1 /R 4 /R 2 -R 3 wherein:R 1 is a metal, metal alloy, or bimetallic system;R 2 is any metal dopant;R 3 is a metallic oxide or mixtures of any metallic oxide;R 4 is WO x , MoO x , SO 4 2− or PO 4 3− ; andx is a whole or fractional number between 2 and 3 inclusive. 2. The catalytic compound of claim 1, wherein R 1 is a Group VIII metal. 3. The catalytic compound of claim 1, wherein R 1 is a combination of Group VIII metals. 4. The catalytic compound of claim 2, wherein R 1 is selected from the group consisting of platinum, palladium, iridium, rhodium, and combinations thereof. 5. The catalytic compound of claim 1, wherein R 1 is selected from the group consisting of an alloy and bimetallic systems Pt—Sn, Pt—Pd, and Pt—Ge. 6. The catalytic compound of claim 1, wherein R 2 is selected from the group consisting of Al 3+ , Ga 3+ , Ce 4+ , Sb 5+ , Sc 3+ , Mg 2+ , Co 2+ , Fe 3+ , Cr 3+ , Y 3+ , Si 4+ , and In 3+ . 7. The catalytic compound of claim 6, wherein R 2 is Al 3+ . 8. The catalytic compound of claim 1, wherein R 3 is selected from the group consisting of zirconium oxide, titanium oxide, tin oxide, ferric oxide, and cerium oxide. 9. The catalytic compound of claim 8, wherein R 3 is ZrO 2 . 10. The catalytic compound of claim 1, wherein the ratio of metal dopant to metal in the oxide is less than or equal to about 0.20. 11. The catalytic compound of claim 10, wherein the ratio of metal dopant to metal in the oxide is less than or equal to about 0.05. 12. The catalytic compound of claim 10, wherein the ratio of metal dopant to metal in the oxide is about 0.05. 13. The catalytic compound of claim 1, wherein R 4 is WO x , wherein x is a whole or fractional number between 2 and 3 inclusive. 14. The catalytic compound of claim 13, wherein x is about 3. 15. The catalytic compound of claim 13, wherein x is about 2.9. 16. A method of alkane or alkyl moiety isomerization comprising the reaction step of contacting a catalyst with an alkyl, wherein said catalyst is represented by the formula: 1 /R 4 /R 2 -R 3 wherein:R 1 is a metal, metal alloy, or bimetallic system;R 2 is any metal dopant;R 3 is a metallic oxide or mixtures of any metallic oxide;R 4 is WO x , MoO x , SO 4 2− or PO 4 3− ; andx is a whole or fractional number between 2 and 3 inclusive. 17. The method of claim 16, wherein the alkane isomerization is a straight chain alkane isomerization. 18. The method of claim 17, wherein the alkane isomerization is a C 4 -C 10 alkane isomerization. 19. The method of claim 18, wherein the alkyl isomerization is a C 6 -C 8 alkane isomerization. 20. The method of claim 16, wherein the reaction step occurs at less than 210° C. 21. The method of claim 16, wherein the reaction step occurs at less than 170° C. 22. The method of claim 16, wherein the reaction step occurs at less than 150° C. 23. The method of claim 16, wherein the reaction yield is greater than 70%. 24. The method of claim 23, wherein the reaction yield is greater than 80%. 25. The method of claim 16, wherein the alkane isomerization increases the octane number of the alkane. 26. A compound represented by the formula Pt/WO 3 /Al—ZrO 2 .