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US3849337A Expired / Lapsed US ⏱️ 0.0 years remaining

Process for the preparation of oxidation catalysts and catalysts obtained thereby

Assignee: SnamProgetti SpA
•
Filing: 1972-04-21
•
Granted: 1974-11-19
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Expires: 1992-04-21
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Abstract

Abstract 1. A PROCESS FOR THE PREPARATION OF OXIDATION CATALYST BASED ON OXIDES OF ANTIMONY AND OF A SECOND METAL SELECTED FROM THE GROUP CONSISTING IRON, URANIUM, TIN, CERIUM, MANGANESE AND THORIUM SAID PROCESS COMPRISING (I) PROVIDING A POWDERED CATALYTIC MASS BY HEATING COMPOUNDS OF THE SAID METALS WHICH ARE THERMALLY DECOMPOSABLE TO THE METAL OXIDES, (II) DRYING THE FINELY POWDERED CATALYTIC MASS, (II) ADDING A COMPOUND, VOLATILE AT TEMPERATURE LOWER THAN THE CATALYST ACTIVATION TEMPERATURE, AND SELECTED FROM THE GROUP CONSISTING OF AMMONIUM CARBONATE, AMMONIUM BICARBONATE UREA, HEMAMETHYLENETETRAMINE AND OXALIC ACID, (IV) MOLDING THE CATALYST PREPARATION TO SHAPE, (V) HEATING THE SHAPED CATALYST UNTIL SAID VOLATILE COMPOUND IS COMPLETELY ELIMINATED AND (VI) THEN CALCINING TO OBTAIN THE OXIDES OF THE SAID METALS.

Inventors

  • 👤 G Manara
  • 👤 V Fattore

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 17:08
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/24; C07C253/26; B; B01; B01J; B01J23/00; B01J23/16; B01J23/70; B01J23/76; B01J23/84; B01J23/843; B01J23/8435; B01J37/00; B01J37/0009; B01J37/0018; C07C45/00; C07C45/27; C07C45/32; C07C45/33; C07C45/34; C07C45/35; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 121 words
A PROCESS FOR THE PREPARATION OF OXIDATION CATALYST BASED ON OXIDES OF ANTIMONY AND OF A SECOND METAL SELECTED FROM THE GROUP CONSISTING IRON, URANIUM, TIN, CERIUM, MANGANESE AND THORIUM SAID PROCESS COMPRISING (I) PROVIDING A POWDERED CATALYTIC MASS BY HEATING COMPOUNDS OF THE SAID METALS WHICH ARE THERMALLY DECOMPOSABLE TO THE METAL OXIDES, (II) DRYING THE FINELY POWDERED CATALYTIC MASS, (II) ADDING A COMPOUND, VOLATILE AT TEMPERATURE LOWER THAN THE CATALYST ACTIVATION TEMPERATURE, AND SELECTED FROM THE GROUP CONSISTING OF AMMONIUM CARBONATE, AMMONIUM BICARBONATE UREA, HEMAMETHYLENETETRAMINE AND OXALIC ACID, (IV) MOLDING THE CATALYST PREPARATION TO SHAPE, (V) HEATING THE SHAPED CATALYST UNTIL SAID VOLATILE COMPOUND IS COMPLETELY ELIMINATED AND (VI) THEN CALCINING TO OBTAIN THE OXIDES OF THE SAID METALS.
Claim 2
Dependent Claim 121 words
A PROCESS FOR THE PREPARATION OF OXIDATION CATALYST BASED ON OXIDES OF ANTIMONY AND OF A SECOND METAL SELECTED FROM THE GROUP CONSISTING IRON, URANIUM, TIN, CERIUM, MANGANESE AND THORIUM SAID PROCESS COMPRISING (I) PROVIDING A POWDERED CATALYTIC MASS BY HEATING COMPOUNDS OF THE SAID METALS WHICH ARE THERMALLY DECOMPOSABLE TO THE METAL OXIDES, (II) DRYING THE FINELY POWDERED CATALYTIC MASS, (II) ADDING A COMPOUND, VOLATILE AT TEMPERATURE LOWER THAN THE CATALYST ACTIVATION TEMPERATURE, AND SELECTED FROM THE GROUP CONSISTING OF AMMONIUM CARBONATE, AMMONIUM BICARBONATE UREA, HEMAMETHYLENETETRAMINE AND OXALIC ACID, (IV) MOLDING THE CATALYST PREPARATION TO SHAPE, (V) HEATING THE SHAPED CATALYST UNTIL SAID VOLATILE COMPOUND IS COMPLETELY ELIMINATED AND (VI) THEN CALCINING TO OBTAIN THE OXIDES OF THE SAID METALS.

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) 1977-11-18 1978-05-20 1978-11-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-11-18 1982-05-20 1982-11-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-11-18 1986-05-20 1986-11-19 $7700.00 Window Closed / Lapsed

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