Alkylation aide for sulfuric acid catalyzed alkylation units
AssigneeAtlantic Richfield Company
InventorsRichard F. Miller, Michael P. Nicholson
Life of this patent
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Abstract
The efficiency of acid catalyzed alkylation of alkanes with olefins is improved by conducting the alkylation in the presence of small amounts of a fatty acid having 16 to 40 carbon atoms.
Claims15
In an alkylation process comprising contacting an alkylatable hydrocarbon with an olefinic alkylating agent at alkylation conditions in the presence of an acid catalyst and an alkylation promoter, the improvement comprising using as the promoter a fatty acid having the structure ##STR2## wherein R is hydrogen or a saturated or ethylenically unsaturated hydrocarbon radical and R' is a saturated or ethylenically unsaturated hydrocarbon radical and the average sum of carbon atoms in R and R' is 14 to 38.
In an alkylation process comprising contacting a saturated aliphatic hydrocarbon having 4 to 10 carbon atoms with at least one olefinic alkylating agent having 3 to 10 carbon atoms at alkylation conditions in the presence of a strong acid catalyst selected from sulfuric acid, phosphoric acid, hydrofluoric acid, fluorosulfonic acid and mixtures of these and an alkylation promoter, the improvement comprising using as the alkylation promoter about 0.001 to 1.0 percent, based on the total weight of strong acid catalyst of a component comprised of at least one carboxylic acid having the structure ##STR3## wherein R is hydrogen or a saturated or ethylenically unsaturated hydrocarbon group and R' is a saturated or ethylenically unsaturated hydrocarbon group and the average total sum of carbon atoms in R and R' is 14 to 34.
Dependencies are inferred from the claim text.