Conversion of paraffins to aromatics over zeolites modified with oxides of group IIIA, IVA and VA elements
A process is described for producing aromatic hydrocarbons, the process comprising contacting one or more C/sub 2/-C/sub 12/ alkanes with a catalyst comprising a crystalline zeolite material having the structure of ZSM-5 or ZSM-11, the contacting taking place under aromatization conditions including a temperature of from about 200/sup 0/C to about 700/sup 0/C, a pressure of from about 0.1 atmosphere to about 60 atmospheres, a weight hourly spaced velocity (WHSV) of from about 0.1 to about 400 and a hydrogen/hydrocarbon mole ratio of from about 0 to about 20, the catalyst further comprising an oxide of a Group IIIA, IVA or VA element, the oxide being incorporated into the catalyst by a modification process comprising the steps of: (i) contacting the ZSM-5 or ZSM-11 with a solution or neat liquid of a compound of the Group IIIA, IVA or VA element, thereby impregnating the ZSM-5 or ZSM-11 with the compound; and (ii) heating the impregnated ZSM-5 or ZSM-11 or step (i) for at least one hour at a temperature of at least 150/sup 0/C.
- Assignee:
- Mobil Oil Corp., New York, NY
- Patent Number(s):
- US 4590323
- OSTI ID:
- 5544825
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020400* -- Petroleum-- Processing
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALKANES
AROMATICS
AROMATIZATION
CATALYSTS
CHEMICAL PREPARATION
CHEMICAL REACTIONS
ELEMENTS
HEATING
HIGH TEMPERATURE
HYDROCARBONS
HYDROGEN
IMPREGNATION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
LOW PRESSURE
MATERIALS
MEDIUM PRESSURE
MINERALS
NONMETALS
ORGANIC COMPOUNDS
QUANTITY RATIO
SYNTHESIS
ZEOLITES