IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0881815
(2004-06-30)
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발명자
/ 주소 |
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출원인 / 주소 |
- Saudi Basic Industries Corporation
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인용정보 |
피인용 횟수 :
9 인용 특허 :
7 |
초록
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The invention disclosed is a process for the selective conversion of an alkane to an unsaturated carboxylic acid in a one-step process with a mixed metal oxide catalyst composition having the general formula: description="In-line Formulae" end="lead"MoV aNbbTecSbdMeOx description="In-line Formulae"
The invention disclosed is a process for the selective conversion of an alkane to an unsaturated carboxylic acid in a one-step process with a mixed metal oxide catalyst composition having the general formula: description="In-line Formulae" end="lead"MoV aNbbTecSbdMeOx description="In-line Formulae" end="tail" wherein M is optional and may be one or more selected from silver, silicon, sulfur, zirconium, titanium, aluminum, copper, lithium, sodium, potassium, rubidium, cesium, gallium, phosphorus, iron, rhenium, cobalt, chromium, manganese, arsenic, indium, thallium, bismuth, germanium, tin, cerium or lanthanum. This catalyst may be prepared by co-precipitation of metal compounds which are calcined to form a mixed metal oxide catalyst.
대표청구항
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What is claimed is: 1. A process for producing an unsaturated carboxylic acid from an alkane comprising: contacting an alkane and molecular oxygen with a catalyst composition of the formula: description="In-line Formulae" end="lead"MoV aNbbTecSbdMeOx description="In-line Formulae" end="tail" w
What is claimed is: 1. A process for producing an unsaturated carboxylic acid from an alkane comprising: contacting an alkane and molecular oxygen with a catalyst composition of the formula: description="In-line Formulae" end="lead"MoV aNbbTecSbdMeOx description="In-line Formulae" end="tail" wherein Mo is molybdenum, V is vanadium, Nb is niobium, Te is tellurium, Sb is antimony and M is one or more elements selected from the group consisting of silver, silicon, sulfur, zirconium, titanium, aluminum, copper, lithium, sodium, potassium, rubidium, cesium, gallium, phosphorus, iron, rhenium, cobalt, chromium, manganese, arsenic, indium, thallium, bismuth, germanium, tin, cerium and lanthanum; a is 0.05 to 0. 99; b is 0.01 to 0.99; c is 0.01 to 0.15; d is 0.01 to 0.2; e is 0 to 0.5; and x is determined by the valence requirements of the other components of the catalyst composition. 2. The process of claim 1 wherein a is 0.1 to 0.5. 3. The process of claim 2 wherein a is 0.3. 4. The process of claim 1 wherein b is 0.05 to 0.2. 5. The process of claim 4 wherein b is 0.05 to 0.12. 6. The process of claim 1 wherein c is 0.01 to 0.12. 7. The process of claim 6 wherein c is 0.01 to 0.10. 8. The process of claim 1 wherein d is 0.01 to 0.15. 9. The process of claim 8 wherein d is 0.03 to 0.1. 10. The process of claim 1 wherein e is 0.01 to 0.25. 11. The process of claim 10 wherein e is 0.02 to 0.1. 12. The process of claim 1 wherein the catalyst is a supported catalyst on an inert support. 13. The process of claim 12 wherein the inert support is silica, alumina, niobia, titania, zirconia or mixtures thereof. 14. The process of claim 13 wherein the catalyst composition is in the form of powder, granules, spheres, cylinders or saddles. 15. The process of claim 1 wherein the catalyst is selected from the group consisting of MoV0.3Nb0.05Te0.06 Sb0.15Ox and MoV0.3Nb0.12Te0. 09Sb0.09Ox. 16. A process for producing acrylic acid from propane comprising: contacting propane and molecular oxygen with a catalyst composition of the formula: description="In-line Formulae" end="lead"MoV aNbbTecSbdMeOx description="In-line Formulae" end="tail" wherein Mo is molybdenum, V is vanadium, Nb is niobium, Te is tellurium, Sb is antimony and M is one or more elements selected from the group consisting of silver, silicon, sulfur, zirconium, titanium, aluminum, copper, lithium, sodium, potassium, rubidium, cesium, gallium, phosphorus, iron, rhenium, cobalt, chromium, manganese, arsenic, indium, thallium, bismuth, germanium, tin, cerium and lanthanum; a is 0.05 to 0. 99; b is 0.01 to 0.99; c is 0.01 to 0.15; d is 0.01 to 0.2; e is 0 to 0.5; and x is determined by the valence requirements of the other components of the catalyst composition. 17. The process of claim 16 wherein a is 0.1 to 0.5. 18. The process of claim 17 wherein a is 0.3. 19. The process of claim 16 wherein b is 0.05 to 0.2. 20. The process of claim 19 wherein b is 0.05 to 0.12. 21. The process of claim 16 wherein c is 0.01 to 0.12. 22. The process of claim 21 wherein c is 0.01 to 0.10. 23. The process of claim 16 wherein d is 0.01 to 0.15. 24. The process of claim 23 wherein d is 0.03 to 0.1. 25. The process of claim 16 wherein e is 0.01 to 0.25. 26. The process of claim 25 wherein e is 0.02 to 0.1. 27. The process of claim 16 wherein the catalyst is selected from the group consisting of MoV0.3Nb0.05Te0.06 Sb0.15Ox and MoV0.3Nb0.12Te0. 09Sb0.09Ox. 28. The process of claim 16 in which the propane:oxygen molar ratio is in the range from 1:1 to 2:1.
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