Patent US3928533A successfully refreshed from Google Patents.
US3928533A
Expired / Lapsed
US
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Base metal titanate catalysts
Assignee: Corning Glass Works
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Filing: 1974-03-07
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Granted: 1975-12-23
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Expires: 1994-03-07
Abstract
Abstract Refractory base metal titanate catalysts showing considerable activity in the oxidation of hydrocarbons and carbon monoxide, comprising titaniferous crystal phases of spinel, ilmenite and/or pseudobrookite structure which consist essentially, in weight percent on the oxide basis, of about 15-85% TiO2, 15-70% M'''' O wherein M'''' is Mn 2, Co 2, Fe 2 or Cu 2, and 0-60% M2''''''O3 wherein M'''''' is Al 3, Fe 3, Cr 3, Mn 3 or Co 3, are disclosed.
Inventors
- 👤 George H Beall
- 👤 David M Miller
- 👤 Hermann L Rittler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:29
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/889; B01J23/8892; B01D; B01D53/00; B01D53/34; B01D53/92; B01D53/94; B01D53/944; B01J23/85; B01J23/86; Y; Y02; Y02A; Y02A50/00; Y02A50/20
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
120 words
A PROCESS FOR CATALYTICALLY OXIDIZING HYDROCARBONS AND CARBON MONOXIDE PRESENT IN A MOVING GAS STREAM WHICH COMPRISES THE STEP OF CONTACTING THE MOVING GAS STREAM AT A CATALYST TEMPERATURE ININ THE RANGE OF ABOUT 700*-2000*F. WITH A CRYSTALLINE CATALYTIC MATERIAL CONSISTING ESSENTIALLY, IN WEIGHT PERCENT ON THE OXIDE BASIS, OF ABOUT 15-85% TIO2, 15-70% M"O, WHEREIN M" IS SELECTED FROM THE GROUP CONSISTING OF MN+2, CO+2, CU+2 AND FE+2, AND O-60% M2''" O3, WHEREIN M''" IS SELECTED FROM THE GROUP CONSISTING OF AL+3, FE+3, MN+3, CR+3 AND CO+3, SAID MATERIAL HAVING A MAJOR CRYSTAL PHASE CONSISTING OF AT LEAST ONE CRYSTALLINE SPECIES SELECTED FROM THE GROUP CONSISTING OF TITANIFEROUS SOLID SOLUTIONS OF SPINEL (M2"TIO4-M#"M2''"O4), ILMENITE (M"TIO3-M2''"O3) AND PSEUDOBROOKITE (M"TI2O5-M2"TIO5) STRUCTURE.
Claim 2
Dependent Claim
120 words
A PROCESS FOR CATALYTICALLY OXIDIZING HYDROCARBONS AND CARBON MONOXIDE PRESENT IN A MOVING GAS STREAM WHICH COMPRISES THE STEP OF CONTACTING THE MOVING GAS STREAM AT A CATALYST TEMPERATURE ININ THE RANGE OF ABOUT 700*-2000*F. WITH A CRYSTALLINE CATALYTIC MATERIAL CONSISTING ESSENTIALLY, IN WEIGHT PERCENT ON THE OXIDE BASIS, OF ABOUT 15-85% TIO2, 15-70% M"O, WHEREIN M" IS SELECTED FROM THE GROUP CONSISTING OF MN+2, CO+2, CU+2 AND FE+2, AND O-60% M2''" O3, WHEREIN M''" IS SELECTED FROM THE GROUP CONSISTING OF AL+3, FE+3, MN+3, CR+3 AND CO+3, SAID MATERIAL HAVING A MAJOR CRYSTAL PHASE CONSISTING OF AT LEAST ONE CRYSTALLINE SPECIES SELECTED FROM THE GROUP CONSISTING OF TITANIFEROUS SOLID SOLUTIONS OF SPINEL (M2"TIO4-M#"M2''"O4), ILMENITE (M"TIO3-M2''"O3) AND PSEUDOBROOKITE (M"TI2O5-M2"TIO5) STRUCTURE.
Claim 3
Dependent Claim
40 words
A process according to claim 1 wherein M'''' is selected from the group consisting of Co 2, Cu 2 and Mn 2, and wherein said material has a principal crystal phase consisting essentially of titaniferous spinel and/or ilmenite solid solutions.
Claim 4
Dependent Claim
19 words
A process according to claim 1 wherein said crystalline catalytic material consists essentially of cobalt, manganese, and titanium oxides.
Claim 5
Dependent Claim
19 words
A process according to claim 1 wherein said crystalline catalytic material consists essentially of copper, manganese, and titanium oxides.
Claim 6
Dependent Claim
15 words
A process according to claim 1 wherein said moving gas stream comprises automotive exhaust gases.
Claim 7
Dependent Claim
14 words
A process according to claim 5 wherein the catalyst temperature ranges from about 1000*-1600*F.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |