Process for isomerizing alkyl aromatic hydrocarbons utilizing ZSM-23 zeolite and a hydrogenation/dehydrogenation metal
This patent describes a process for producing a near equilibrium mixture of xylenes from a feed comprising ethylbenzene and mixed xylenes which comprises contacting the feed with hydrogen in the presence of a catalyst composition consisting essentially of 0.1 to 1 weight percent of a hydrogenation/dehydrogenation metal, 5 to 97 weight percent alumina and 3 to 80 weight percent ZSM-23 zeolite. The catalyst contact with the feed is undertaken at a weight hourly space velocity of 0.5 to 15 based on the catalyst, a pressure of from between 0 to 1000 psig and a temperature of from between 600/sup 0/F and 900/sup 0/F. The ZSM-23 is steamed prior to hydrogenation/dehydrogenation metal incorporation into the catalyst composition.
- Assignee:
- Mobil Oil Corp., New York, NY
- Patent Number(s):
- US 4694114
- OSTI ID:
- 5890653
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
ALKYL RADICALS
ALKYLATED AROMATICS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
AROMATICS
BENZENE
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL PREPARATION
CHEMICAL REACTIONS
DEHYDROGENATION
ELEMENTS
ETHYL RADICALS
FLOW RATE
HIGH TEMPERATURE
HYDROCARBONS
HYDROGEN
HYDROGENATION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
ISOMERIZATION
LOW PRESSURE
MATERIALS
MEDIUM PRESSURE
MINERALS
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
RADICALS
SYNTHESIS
XYLENES
ZEOLITES