| 摘要 |
1,260,010. Purifying n-butenes; co-dimerization. ESSO RESEARCH & ENG. CO. 2 June, 1969 [26 June, 1968], No. 27737/69. Heading C5E. Fractions rich in n-butylenes are obtained from mixtures of n- and iso-butylenes by contacting the mixtures with a supported nickel oxide catalyst above ambient temperature under conditions sufficient to polymerize (particularly dimerize) the isobutylene but insufficient for substantial conversion of the n-butylenes, the catalyst employed being one, the formation of which is finished in an acidic medium. The process may be carried out in more than one stage. Silica-alumina is a preferred catalyst support. The purified n-butylenes obtained as above may be co-dimerized with propylene, using a supported nickel oxide catalyst but under more severe conditions than for the purification, to produce C 6-8 fractions predominating in heptenes. Reference has been directed by the Comptroller to Specification 1,171,950.
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