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Patent US4472528A successfully refreshed from Google Patents.
US4472528A
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Catalyst for hydrotreating solvent refined coals and lignites
Assignee: Individual
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Filing: 1982-12-27
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Granted: 1984-09-18
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Expires: 2002-12-27
Abstract
Abstract A catalyst for denitrogenating and desulfurizing liquified or solvent refined coals and lignite which includes catalytic metal oxides and/or sulfides impregnated within a porous base of principally alumina with large surface area and pore volume and pores of sufficient diameter throughout to accomodate the liquified coal or lignite molecules. The base material includes surface area of 150-500 m 2 /gm, pore volume of 0.4-1.0 ml/gm, average pore diameter of 40-250 Å with no part of the pore less than 40 Å. The catalytic metals impregnated into these base materials include 4-20% MoO 3 , 1-8% CoO, 2-16% WO 3 and/or 1-4% NiO.
Inventors
- 👤 Lloyd Berg
- 👤 Nam K. Kim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:43
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/882; B01J35/00; B01J35/60; C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G45/06; C10G45/08; B01J35/61; B01J35/615; B01J35/63; B01J35/633; B01J35/635; B01J35/64; B01J35/647
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
122 words
In a catalyst for the hydrogenation, desulfurization and denitrogenation of carbonaceous liquids produced by the solvent refining of coals and lignites containing about 0.98% sulfur and about 1.07% nitrogen, said catalyst having an alumina base material that includes a surface area in the range of 160-337 square meters per gram, a pore volume in the range of 0.4-0.72 milliliters per gram, an average pore diameter in the range of 89-100 Angstroms, deposited catalytic oxides in the range of approximately 8-10% MoO 3 , 3-4% CoO and 8-10% WO 3 , the improved combination comprising a base material with deposited catalytic metal oxides having a pore configuration which is accessible to nitrocellulose molecules as determined by the hydrodenitrogenation of nitrocellulose in dibutyl phthalate.
Claim 2
Dependent Claim
122 words
In a catalyst for the hydrogenation, desulfurization and denitrogenation of carbonaceous liquids produced by the solvent refining of coals and lignites containing about 0.98% sulfur and about 1.07% nitrogen, said catalyst having an alumina base material that includes a surface area in the range of 160-337 square meters per gram, a pore volume in the range of 0.4-0.72 milliliters per gram, an average pore diameter in the range of 89-100 Angstroms, deposited catalytic oxides in the range of approximately 8-10% MoO 3 , 3-4% CoO and 8-10% WO 3 , the improved combination comprising a base material with deposited catalytic metal oxides having a pore configuration which is accessible to nitrocellulose molecules as determined by the hydrodenitrogenation of nitrocellulose in dibutyl phthalate.
Claim 3
Dependent Claim
23 words
The catalyst of claim 1 in which the catalyst is pretreated with a hydrogen sulfide-hydrogen mixture at a temperature of about 450° C.
Claim 4
Dependent Claim
117 words
In a catalyst for the hydrogenation, desulfurization and denitrogenation of carbonaceous liquids produced by the solvent refining of coals and lignites containing about 0.98% sulfur and about 1.07% nitrogen, said catalyst having an alumina base material that includes a surface area in the range of 160-337 square meters per gram, a pore volume in the range of 0.4-0.72 milliliters per gram, an average pore diameter in the range of 89-100 Angstroms, deposited catalytic oxides in the range of approximately 8-10% MoO 3 and 3-4% CoO, the improved combination comprising a base material with deposited catalytic metal oxides having a pore configuration which is accessible to nitrocellulose molecules as determined by the hydrodenitrogenation of nitrocellulose in dibutyl phthalate.
Claim 5
Dependent Claim
117 words
In a catalyst for the hydrogenation, desulfurization and denitrogenation of carbonaceous liquids produced by the solvent refining of coals and lignites containing about 0.98% sulfur and about 1.07% nitrogen, said catalyst having an alumina base material that includes a surface area in the range of 160-337 square meters per gram, a pore volume in the range of 0.4-0.72 milliliters per gram, an average pore diameter in the range of 89-100 Angstroms, deposited catalytic oxides in the range of approximately 8-10% MoO 3 and 3-4% CoO, the improved combination comprising a base material with deposited catalytic metal oxides having a pore configuration which is accessible to nitrocellulose molecules as determined by the hydrodenitrogenation of nitrocellulose in dibutyl phthalate.
Claim 6
Dependent Claim
23 words
The catalyst of claim 3 in which the catalyst is pretreated with a hydrogen sulfide-hydrogen mixture at a temperature of about 450° C.
References Cited (Backward Citations)
US4200521A
Cited
US4326995A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-18 | 1988-03-19 | 1988-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-18 | 1992-03-19 | 1992-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-18 | 1996-03-19 | 1996-09-18 | $7700.00 | Window Closed / Lapsed |