US4036783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supported catalyst containing vanadium and titanium
Assignee: BASF SE
•
Filing: 1976-02-25
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Granted: 1977-07-19
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Expires: 1996-02-25
Abstract
Abstract A supported catalyst containing vanadium and titanium, comprising a ring-shaped carrier having an external diameter of from 7.3 to 8.6 mm, a length of from 5.3 to 7 mm and a wall thickness of from 0.1 to 2 mm, and an active composition, applied thereto, of from 1 to 30 per cent by weight of vanadium pentoxide and from 70 to 99 per cent by weight of titanium dioxide and/or zirconium dioxide.
Inventors
- 👤 Kurt Blechschmitt
- 👤 Peter Reuter
- 👤 Friedrich Wirth
- 👤 Gert Buerger
- 👤 Rolf Seubert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:39
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/255; C07C51/265; B; B01; B01J; B01J23/00; B01J23/16; B01J23/20; B01J23/22; B01J35/00; B01J35/50; B01J35/55; B01J37/00; B01J37/02; B01J37/0215; B01J37/0232; C07C51/31; C07C51/313
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
79 words
A supported catalyst comprising an inert, non-porous ring-shaped carrier which has an external diameter of from 7.3 to 8.6 mm, a length of from 5.3 to 7.0 mm and a wall thickness of from 0.1 to 2 mm, and a layer of from 0.05 to 1 mm of an active composition consisting essentially of from 1 to 30 percent by weight of vanadium pentoxide and from 70 to 99 percent by weight of titanium dioxide, applied to the carrier.
Claim 2
Dependent Claim
79 words
A supported catalyst comprising an inert, non-porous ring-shaped carrier which has an external diameter of from 7.3 to 8.6 mm, a length of from 5.3 to 7.0 mm and a wall thickness of from 0.1 to 2 mm, and a layer of from 0.05 to 1 mm of an active composition consisting essentially of from 1 to 30 percent by weight of vanadium pentoxide and from 70 to 99 percent by weight of titanium dioxide, applied to the carrier.
Claim 3
Dependent Claim
40 words
A supported catalyst as claimed in claim 1, wherein the ring-shaped carrier has an external diameter of from 7.5 to 8.4 mm, a length of from 5.8 to 6.8 mm and a wall thickness of from 0.5 to 1.6 mm.
Claim 4
Dependent Claim
33 words
A supported catalyst as claimed in claim 1 wherein said active composition consists essentially of from 1 to 15% by weight of vanadium pentoxide and 85 to 99% by weight of titanium dioxide.
References Cited (Backward Citations)
US3565829A
Cited
US3830755A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-18 | 1981-01-17 | 1981-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-18 | 1985-01-17 | 1985-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-18 | 1989-01-17 | 1989-07-19 | $7700.00 | Window Closed / Lapsed |