Acid catalyzed hydrocarbon conversion processes utilizing a catalyst comprising a group ivb, vb or vib metal oxide on an inorganic refractory oxide support

Patent · Tue Nov 11 04:00:00 EST 1980

OSTI ID:6431167

Grenoble, D C; Kim, C J; Murrell, L L

It has been discovered and forms the basis of the disclosure that various acid catalyzed hydrocarbon conversion processes such as catalytic cracking of gas oil; xylene isomerization; toluene disproportionation; dealkylation of aromatics; ethylene, butylene , isobutylene, propylene polymerization; olefin isomerization; alcohol dehydration; olefin hydration; alkylation; heavy ends cat cracking, etc. are dramatically improved insofar as percent conversion, and selectivity are concerned by the use of a catalyst selected from the group consisting of the oxides of tungsten, niobium and mixtures thereof, and tungsten or niobium oxides in combination with one or more additional metal oxides selected from the group consisting of tantalum oxide, hafnium oxide, chromium oxide, titanium oxide and zirconium oxide, supported on an inorganic refractory oxide support. These catalysts may be prepared by the methods known in the art, I.E., incipient wetness, impregnation, coprecipitation, etc. Of the metal oxide precursor onto or with the supports followed by conversion into the oxide form. Before use, the metal oxide/support combination is preferably subjected to steaming at elevated temperatures either before introduction into the reactor or in situ in the process reactor. Conventional catalytic cracking catalysts are unstable at the elevated temperatures where the metal oxide/support combinations of the present invention are uniquely stable.

• Assignee: Exxon Research And Engineering Co
• Patent Number(s): US 4233139
• OSTI ID: 6431167
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CATALYSTS
CATALYTIC CRACKING
CHALCOGENIDES
CHEMICAL REACTIONS
CONVERSION
CRACKING
DECOMPOSITION
HYDROCARBONS
NIOBIUM COMPOUNDS
NIOBIUM OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PYROLYSIS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
TUNGSTEN COMPOUNDS
TUNGSTEN OXIDES