| 摘要 |
This specification discloses a process for the alkylation of olefins. The olefins are alkylated by contacting in the presence of an alkylating agent with a catalyst. The catalyst comprises a crystalline aluminosilicate zeolite having a silica to alumina ratio of at least about 12, a constraint index of about 1 to 12, and containing phosphorus incorporated with the crystal structure thereof in an amount of at least about 0.78 percent by weight. The zeolite, preferably, also has a dried crystal density of not less than about 1.6 grams per cubic centimeter. Olefins that may be alkylated include ethylene, propylene, butene-2 and isobutylene. Alkylating agents include methanol, dimethyl ether, and methyl chloride. |
