| 摘要 |
1,271,241. Alkylating isobutane. UNION CARBIDE CORP. 25 June, 1969 [26 June, 1968], No. 32011/69. Heading C5E. [Also in Division C1] Isobutane is alkylated with an olefin containing 2 to 5 carbon atoms in the presence of a catalyst which is a three dimensional zeolitic molecular sieve having a pore size large enough to adsorb 2,2,3-trimethyl pentane and has a composition expressed in terms of mole ratios of oxides, as where I, II, III, and IV are mono-, di-, tri-, and tetravalent metal cations respectively, a is from 0 to 0À15, b is from 0 to 0À75, c and d are from 0 to 1 and e is from 2 to 20, with certain provisos (see Claim 1); the zeolite also has less than 60% of its maximum OH exhibiting infra-red absorption in the region 3480 to 3670 cm.<SP>-1</SP> and is at least 75% crystalline with respect to oxygen adsorptivity. Examples describe the alkylation of isobutane with but-1-ene, to give 2,2,3-trimethyl pentane. |
