US4196101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for forming alumina pellets containing titania and process for producing hydrodesulfurization catalyst containing the pellets
Assignee: Harshaw Chemical Co
•
Filing: 1978-02-03
•
Granted: 1980-04-01
•
Expires: 1998-02-03
Abstract
Abstract Shaped alumina pellets containing titania, catalysts employing the same, and process for producing the same.
Inventors
- 👤 Geoffrey R. Wilson
- 👤 Masami Kayamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:10
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/06; B01J21/063; B01J21/02; B01J21/04; B01J37/00; B01J37/20
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
43 words
A process for forming shaped alumina pellets which comprises mixing alumina hydrate with water and a hydrolyzeable titanium compound, hydrolyzing the titanium compound under substantially non-acid conditions to form hydrated titanium oxide, forming said mixture into a pellet, drying and calcining said pellet.
Claim 2
Dependent Claim
43 words
A process for forming shaped alumina pellets which comprises mixing alumina hydrate with water and a hydrolyzeable titanium compound, hydrolyzing the titanium compound under substantially non-acid conditions to form hydrated titanium oxide, forming said mixture into a pellet, drying and calcining said pellet.
Claim 3
Dependent Claim
26 words
The process of claim 1 in which said titanium compound is titanium tetrachloride and said titanium tetrachloride is hydrolyzed by mixing the same with a base.
Claim 4
Dependent Claim
46 words
The process of claim 1 in which the hydrolyzeable compound is an organo-titanium compound chosed from the group consisting of the alkyl titanates Ti(OR) 4 where the alkyl radical R is C 3 or C 4 or C 6 or C 8 and the titanium chelates.
Claim 5
Dependent Claim
14 words
The process of claim 3 in which the organo-titanium compound is tetra isopropyl titanate.
Claim 6
Dependent Claim
134 words
The process of claim 1 in which the calcined aluminum pellet contains from about 1 to about 40% of titania based on the weight of the alumina expressed as Al 2 O 3 and titania expressed as TiO 2 , adding to said pellet a water solution of salt of a member chosen from the group consisting of the salts of Group VIII and Group VI-B metals, and mixtures thereof, the total weight of said salts being from about 5 to about 30% of the weight of the pellet on a volatile free basis, expressed as the metal with the atomic weight ratio of Group VIII metal to Group VI-B metal being from about 1:0.3 to about 1:10, all based on the weight of metal element plus the substrate, drying and calcining said pellet.
Claim 7
Dependent Claim
26 words
The process of claim 5 in which the titanium compound is titanium tetrachloride and the titanium tetrachloride is hydrolyzed by mixing the same with a base.
Claim 8
Dependent Claim
13 words
The process of claim 4 in which the organo-titanium compound is isopropyl titanate.
Claim 9
Dependent Claim
9 words
The process of claim 5 and sulfiding said catalyst.
Claim 10
Dependent Claim
9 words
The process of claim 6 and sulfiding said catalyst.
Claim 11
Dependent Claim
9 words
The process of claim 7 and sulfiding said catalyst.
References Cited (Backward Citations)
US3184415A
Cited
US3464930A
Cited
US3544617A
Cited
US3997431A
Cited
US4039478A
Cited
US3945946A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-04-01 | 1983-10-01 | 1984-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-01 | 1987-10-01 | 1988-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-01 | 1991-10-01 | 1992-04-01 | $7700.00 | Window Closed / Lapsed |