| 摘要 |
An isoparaffin:olefin alkylation catalyst, an isoparaffin:olefin alkylation process, and a method for making the catalyst, which catalyst comprises: (a) a Bronsted acid selected from the group consisting of hydrofluoric acid and the halogenated sulfonic acids; (b) an additive having a Donor Number of from about 1 to about 40, wherein said additive is present in a quantity sufficient to effect deactivation of said Bronsted acid for isoparaffin:olefin alkylation such that the catalytic properties of admixture of said Bronsted acid and said additive, in the absence of superacid promoter are characterized by the conversion of a mixed isoparaffin:olefin stream to product containing less than about 50 weight percent of the trimethylpentanes product; and (c) a superacid promoter in concentration sufficient such that contacting said catalyst composition comprising said Bronsted acid, said additive, and said superacid promoter with a mixed isobutane:2-butene feedstream in an isobutane:2-butene molar ratio of more than about 2:1 under alkylation conversion conditions yields a product containing at least 50 weight percent of the trimethylpentanes product. |
