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US 5,210,363 AGranted
Hydrous zirconium oxide dehydration catalyst
AssigneeChevron Research and Technology Company
InventorWilliam A. Sweeney
Life of this patent
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Abstract
Disclosed is a hydrous zirconium oxide catalyst for the dehydration of alcohols of the general formula ##STR1## to terminal olefins, as well as a method for preparing said catalyst. The catalyst provides high conversion of alcohol to olefin, high dehydration selectivity, and high selectivity for terminal olefin.
Claims4
A method for producing a compound having a terminal double bond comprising dehydrating a compound having the general formula ##STR5## where R is a C.sub.2 -C.sub.20 hydrocarbon group, in the presence of a dehydration catalyst comprising the product produced by the method comprising:
- A. dissolving zirconyl nitrate in water;
- B. hydrolyzing the zirconyl nitrate with ammonia at elevated temperature until substantially all of the zirconyl nitrate is hydrolyzed to hydrous zirconium oxide;
- C. recovering the hydrous zirconium oxide and washing it with aqueous ammonium hydroxide until the hydrous zirconium oxide is essentially free of nitrate ions;
- D. washing the hydrous zirconium oxide with water until it is essentially free of ammonium ions;
- and
- E. drying the resulting product at elevated temperature until it is essentially free of water other than water which is chemically bound to the hydrous zirconium oxide.
3 more elements
Dependencies are inferred from the claim text.