US3060133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production and regeneration of platinum carrier catalysts for the synthesis of hydroxylamine from nitric oxide and hydrogen
Assignee: BASF SE
•
Filing: 1960-04-05
•
Granted: 1962-10-23
•
Expires: 1980-04-05
Abstract
No abstract record available.
Inventors
- 👤 Jockers Kurt
- 👤 Meier Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:16
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/082; C01B21/14; C01B21/1409; C01B21/1418; B; B01; B01J; B01J21/00; B01J21/20; B01J23/00; B01J23/38; B01J23/40; B01J23/42; B01J23/54; B01J23/56; B01J23/58; B01J23/90; B01J23/96; B01J27/00; B01J27/06; B01J27/128; B01J27/13; B01J21/18; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584; Y10; Y10S; Y10S502/00; Y10S502/506; Y10S502/509
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
A PROCESS FOR THE PRODUCTION OF PLATINUM-CARRIER CATALYST ADAPTED FOR THE SYNTHESIS OF HYDROXYLAMINE FROM NITRIC OXIDE AND HYDROGEN IN THE PRESENCE OF DILUTE MINERAL ACIDS, WHEREIN A PLATINUM (IV) SALT SELECTED FROM THE GROUP CONSISTING OF PLATINUM (IV) CHLORIDE, CHLOROPLATINIC ACID AND H2(PTCI4(OH)2) IS FIRST REDUCED IN THE FORM OF AN AQUEOUS SOLUTION TO THE PLATINUM (11) STAGE WITH A CATALYST CARRIER IN SAID SOLUTION AT A MOLAR CHLORINE ION CONCENTRATION OF FROM 20 TO 50 TIMES THE MOLAR PLATINUM CONCENTRATION OF THE SAID SOLUTION AND AT A PH VALUE OF 4.0 TO 6.5 BY MEANS OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF SODIUM DITHIONITE, ORGANIC DERIVATIVES OF SODIUM DITHIONITE., SODIUM SULFATE,,CALCIUM BISULFITE AND SULFUROUS ACID, AND IN THE SOLUTION THUS OBTAINED THE PLATINUM (11) IS THEN REDUCED TO PRECIPITATE PLATINUM METAL ON THE CARRIER AT A PH VALUE OF 2.3 TO 4.0 BY MEANS OF A REDUCING AGENT SELECTED FROM THE GROUP CONSISTING OF FORMIC ACID, SODIUM FORMATE AND CALCIUM FORMATE.
Claim 2
Dependent Claim
165 words
A PROCESS FOR THE PRODUCTION OF PLATINUM-CARRIER CATALYST ADAPTED FOR THE SYNTHESIS OF HYDROXYLAMINE FROM NITRIC OXIDE AND HYDROGEN IN THE PRESENCE OF DILUTE MINERAL ACIDS, WHEREIN A PLATINUM (IV) SALT SELECTED FROM THE GROUP CONSISTING OF PLATINUM (IV) CHLORIDE, CHLOROPLATINIC ACID AND H2(PTCI4(OH)2) IS FIRST REDUCED IN THE FORM OF AN AQUEOUS SOLUTION TO THE PLATINUM (11) STAGE WITH A CATALYST CARRIER IN SAID SOLUTION AT A MOLAR CHLORINE ION CONCENTRATION OF FROM 20 TO 50 TIMES THE MOLAR PLATINUM CONCENTRATION OF THE SAID SOLUTION AND AT A PH VALUE OF 4.0 TO 6.5 BY MEANS OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF SODIUM DITHIONITE, ORGANIC DERIVATIVES OF SODIUM DITHIONITE., SODIUM SULFATE,,CALCIUM BISULFITE AND SULFUROUS ACID, AND IN THE SOLUTION THUS OBTAINED THE PLATINUM (11) IS THEN REDUCED TO PRECIPITATE PLATINUM METAL ON THE CARRIER AT A PH VALUE OF 2.3 TO 4.0 BY MEANS OF A REDUCING AGENT SELECTED FROM THE GROUP CONSISTING OF FORMIC ACID, SODIUM FORMATE AND CALCIUM FORMATE.
References Cited (Backward Citations)
US2285277A
Cited
US2834730A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-22 | 1966-04-23 | 1966-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-22 | 1970-04-23 | 1970-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-22 | 1974-04-23 | 1974-10-23 | $7700.00 | Window Closed / Lapsed |