W-hexene

Under the operating conditions, the reaction intermediates (w-hexenes and i-hexenes in n-hexane isomerization) are thermodynamically very adverse, hence appear only as traces in the products. These intermediates (which are generally olefinic) are highly reactive in acid catalysis, which explains that the rates of bifunctional catalysis transformations are relatively high. The activity, stability, and selectivity of bifunctional zeolite catalysts depend mainly on three parameters the zeolite pore structure, the balance between hydrogenating and acid functions, and their intimacy. In most of the commercial processes, the balance is in favor of the hydrogenation function, that is, the transformations are limited by the acid function. 

Campbell (22) refers that copolymers of 4-methyl- 1-pentene (4MP) with M-pentene-1 and with w-hexene-1, synthesized with the aid of stereospecific catalysts, were crystalline for M-hexene contents up to 25%, probably because of a partial cocrystallization. Analogous conclusions were attained by Hewett and Weir (23) for the same copolymer systems studied by Campbell on the basis of dynamic measurements correlated with DTA observations. 

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