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US3664972A Expired / Lapsed US ⏱️ 0.0 years remaining

Hydrothermal method for manufacturing a catalytic material useful in preparing catalysts for hydrocarbon conversion processes

Assignee: Chevron USA Inc
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Filing: 1970-05-20
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Granted: 1972-05-23
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Expires: 1990-05-20
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Abstract

Abstract Hydrothermal conversion method for manufacturing a catalytic material useful in preparing catalysts for hydrocarbon conversion processes, comprising coprecipitating silica and alumina in amorphous form as a hydrogel slurry in the presence of acetate ion, filtering and drying said slurry to produce a hydrogel material, washing said hydrogel material, and subjecting said washed hydrogel material to autoclave conditions of elevated temperature and pressure in a reaction zone until a substantial amount of a layered crystalline clay-type aluminosilicate mineral is formed, preferably in an intimate admixture with a substantial amount of unreacted amorphous cogel comprising silica and alumina, and if desired incorporating in the reaction zone product before or after drying thereof a component comprising a hydrogenating metal.

Inventors

  • 👤 Joseph Jaffe

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 00:24
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/16; B01J29/00; B01J29/04; B01J29/049; C; C10; C10G; C10G49/00; C10G49/02; C10G49/08; B01J2229/00; B01J2229/30; B01J2229/42

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 18 words
The method as in claim 1, wherein a compound of fluorine is present in said second hydrogel slurry.
Claim 2
Dependent Claim 33 words
The method as in claim 1, with the additional steps of incorporating in said intimate admixture a component comprising a hydrogenating metal, and drying and calcining the resulting composite to produce a catalyst.
Claim 3
Dependent Claim 22 words
The method as in claim 3, wherein said intimate admixture is dried before incorporation therein of said component comprising a hydrogenating metal.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-05-23 1975-11-22 1976-05-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-05-23 1979-11-22 1980-05-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-05-23 1983-11-22 1984-05-23 $7700.00 Window Closed / Lapsed

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