Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases p. 3089 - 3100 (1982)
Update date:2022-08-17
Topics:
Haining, Ian H. B.
Kemball, Charles
Whan, David A.
Reactions with excess hydrogen of n-hexane and methylcyclopentane at 550 K have been studied in a static reactor system on a series of platinum-rhenium catalysts containing 0.5percent metal by weight.The various reactions which took place have been grouped into two main categories according to the pattern of activity found across the series of catalysts. (1) Ring opening of methylcyclopentane, and the minor process of its demethanation, and 1,5 cyclization of n-hexane occured readyl over platinum but activity decreased steadily with increase of rhenium content and was low for pure rhenium. (2) Skeletal isomerization of n-hexane, ring enlargement of methylcyclopentane and general hydrogenolysis (more important with n-hexane than with methylcyclopentane) were catalysed most effectively by catalysts with about equal amounts of the two metals and less rapidly on the platinum-rich or rhenium-rich catalysts.Ist is suggested that the first category of reactions involves either 1,5 or 1,2 adsorbed hydrocarbon species whereas the second category is dependent on the formation of 1,3 adsorbed species.
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