Claims
- 1. A catalyst composition comprising zinc, titanium, and at least one promoter selected from the group consisting of vanadium, chromium, cobalt, molybdenum, tungsten, platinum, palladium, rhodium, ruthenium, and compounds thereof, wherein the concentration by weight of said at least one promoter in said catalyst composition is less than the total concentration by weight of said zinc and said titanium in said catalyst composition and wherein said catalyst composition is prepared by calcining a mixture of zinc oxide and titanium dioxide in the presence of molecular oxygen at a temperature in the range of about 650.degree. C. to about 1050.degree. C. to form zinc titanate and adding said at least one promoter to said zinc titanate to form said catalyst composition.
- 2. A composition in accordance with claim 1 wherein the atomic ratio of zinc to titanium in said catalyst composition is in the range of about 1:1 to about 3:1.
- 3. A composition in accordance with claim 1 wherein the atomic ratio of zinc to titanium in said catalyst composition is in the range of about 1.8:1 to about 2.2:1.
- 4. A composition in accordance with claim 1 wherein said catalyst composition has been calcined in the presence of molecular oxygen at a temperature in the range of about 500.degree. C. to about 650.degree. C. after said at least one promoter has been added to said zinc titanate.
- 5. A composition in accordance with claim 1 wherein the concentration of vanadium, chromium, cobalt, nickel, molybdenum, or tungsten as individual promoters, expressed as an element, if present, is in the range of about 0.1 to about 16 weight percent based on the weight of said catalyst composition and the concentration of rhenium, palladium, rhodium, ruthenium or platinum as individual promoters, expressed as the element, if present, is in the range of about 0.2 to about 1.6 weight percent based on the weight of said catalyst composition.
- 6. A composition in accordance with claim 5 wherein the total concentration of any combination of the group from which said at least one promoter is selected, expressed as an element, is in the range of about 0.1 to about 24 weight percent based on the weight of the catalyst composition.
- 7. A composition in accordance with claim 1 wherein said at least one promoter is cobalt and molybdenum.
- 8. A composition in accordance with claim 7 wherein the cobalt:molybdenum atomic ratio in said catalyst composition is in the range of about 0.6:1 to about 0.8:1.
- 9. A composition in accordance with claim 1 wherein said catalyst composition is completely sulfided after said at least one promoter is added to said zinc titanate.
Parent Case Info
This application is a division of application Ser. No. 125,429, filed Feb. 18, 1980, now abandoned.
US Referenced Citations (10)
Foreign Referenced Citations (1)
Number |
Date |
Country |
384473 |
Dec 1932 |
GBX |
Divisions (1)
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Number |
Date |
Country |
Parent |
125429 |
Feb 1980 |
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