Process for producing aromatic compounds from aliphatic hydrocarbons
AssigneeExxon Chemical Patents Inc.
InventorsKenneth R. Clem, Gary D. Mohr, Robert Scott Smith
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Abstract
A dehydrocyclo-oligomerization process is provided for converting aliphatic hydrocarbons to aromatics by contacting the feedstock under conversion conditions which a zeolite bound zeolite catalyst. The zeolite bound zeolite catalyst comprises first zeolite crystals which are bound together by second zeolite crystals. If the zeolite bound zeolite catalyst is selectivated, the process can produce greater than equilibrium amounts of paraxylene.
Claims32
A process for the production of aromatic hydrocarbons by the dehydrocyclo-oligomerization of aliphatic hydrocarbons which comprises contacting a feedstream containing aliphatic hydrocarbons under dehydrocyclo-oligomerization conditions with a zeolite bound zeolite catalyst which comprises:
- (a) first crystals of an intermediate pore size first zeolite having acid activity;
- and,
- (b) a binder comprising of second crystals of a second zeolite having less acid activity than the first zeolite[.];
- wherein said zeolite bound zeolite catalyst contains less than about 10 percent by weight of non-zeolitic binder based on the weight of said first zeolite and said second zeolite.
Dependencies are inferred from the claim text.