US3978137A
Expired / Lapsed
US
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Oxidation of sulfur-containing compounds
Assignee: Honeywell UOP LLC
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Filing: 1975-03-14
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Granted: 1976-08-31
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Expires: 1995-03-14
Abstract
Abstract A process is disclosed which comprises the oxidation of sulfur-containing compounds by treating said sulfur-containing compounds with an oxygen-containing gas in a medium possessing a pH in a range of from about a pH of 8 to a pH of about 14 in the presence of a catalyst system comprising a Group VIIB metal phthalocyanine and a Group VIII metal phthalocyanine.
Inventors
- 👤 Robert R. Frame
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:45
CPC Classifications
C; C07; C07C; C07C319/00; C07C319/22; C07C319/24; B; B01; B01J; B01J31/00; B01J31/16; B01J31/18; B01J31/1805; B01J31/181; B01J31/1825; B01J31/183; B01J2531/00; B01J2531/02; B01J2531/0238; B01J2531/0241; B01J2531/025; B01J2531/80; B01J2531/82; B01J2531/821; B01J2531/827; B01J2531/84; B01J2531/845; B01J2531/847; B01J31/1616
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
101 words
A process for the oxidation of a sulfur-containing compound which comprises treating said sulfur-containing compound at oxidation conditions with an oxygen-containing gas in a medium possessing a pH in a range of from about a pH of 8 to about a pH of 14 in the presence of a catalyst system comprising a Group VIIB metal phthalocyanine and a Group VIII metal phthalocyanine in a ratio of from about 1 to about 6 mols of the Group VIIB metal phthalocyanine per mol of the Group VIII metal phthalocyanine to decrease the uptake of oxygen, and recovering the resultant oxidized sulfur-containing compound.
Claim 2
Dependent Claim
101 words
A process for the oxidation of a sulfur-containing compound which comprises treating said sulfur-containing compound at oxidation conditions with an oxygen-containing gas in a medium possessing a pH in a range of from about a pH of 8 to about a pH of 14 in the presence of a catalyst system comprising a Group VIIB metal phthalocyanine and a Group VIII metal phthalocyanine in a ratio of from about 1 to about 6 mols of the Group VIIB metal phthalocyanine per mol of the Group VIII metal phthalocyanine to decrease the uptake of oxygen, and recovering the resultant oxidized sulfur-containing compound.
Claim 3
Dependent Claim
32 words
The process of claim 1 further characterized in that said catalyst system comprises about 3 parts of the Group VIIB metal phthalocyanine and about 1 part of the Group VIII metal phthalocyanine.
Claim 4
Dependent Claim
36 words
The process of claim 1 further characterized in that the oxidation conditions include a temperature of from about 0° C. to about 500° C. and a pressure of from about 1 atmosphere to about 100 atmospheres.
Claim 5
Dependent Claim
15 words
The process of claim 1 further characterized in that the sulfur-containing compound is a mercaptan.
Claim 6
Dependent Claim
14 words
The process of claim 4 further characterized in that the mercaptan is methyl mercaptan.
Claim 7
Dependent Claim
14 words
The process of claim 4 further characterized in that the mercaptan is propyl mercaptan.
Claim 8
Dependent Claim
13 words
The process of claim 4 further characterized in that the mercaptan is thiophenol.
Claim 9
Dependent Claim
15 words
The process of claim 1 further characterized in that the sulfur-containing compound is hydrogen sulfide.
Claim 10
Dependent Claim
14 words
The process of claim 1 further characterized in that the oxygen-containing gas is oxygen.
Claim 11
Dependent Claim
14 words
The process of claim 1 further characterized in that the oxygen-containing gas is air.
Claim 12
Dependent Claim
26 words
The process of claim 1 further characterized in that the Group VIIB metal phthalocyanine is manganese phthalocyanine and the Group VIII metal phthalocyanine is cobalt phthalocyanine.
Claim 13
Dependent Claim
26 words
The process of claim 1 further characterized in that the Group VIIB metal phthalocyanine is rhenium phthalocyanine and the Group VIII metal phthalocyanine is ruthenium phthalocyanine.
Claim 14
Dependent Claim
26 words
The process of claim 1 further characterized in that the Group VIIB metal phthalocyanine is manganese phthalocyanine and the Group VIII metal phthalocyanine is iridium phthalocyanine.
Claim 15
Dependent Claim
26 words
The process of claim 1 further characterized in that the Group VIIB metal phthalocyanine is rhenium phthalocyanine and the Group VIII metal phthalocyanine is cobalt phthalocyanine.
Claim 16
Dependent Claim
26 words
The process of claim 1 further characterized in that the Group VIIB metal phthalocyanine is manganese phthalocyanine and the Group VIII metal phthalocyanine is nickel phthalocyanine.
Claim 17
Dependent Claim
18 words
The process of claim 1 further characterized in that the catalyst system is dispersed on a solid support.
Claim 18
Dependent Claim
14 words
The process of claim 16 further characterized in that the solid support is carbon.
Claim 19
Dependent Claim
14 words
The process of claim 16 further characterized in that the solid support is γ-alumina.
Claim 20
Dependent Claim
14 words
The process of claim 1 further characterized in that the medium comprises sodium hydroxide.
Claim 21
Dependent Claim
13 words
The process of claim 1 further characterized in that the medium comprises ammonia.
Claim 22
Dependent Claim
16 words
The process of claim 1 further characterized in that the medium comprises a quaternary ammonium compound.
Claim 23
Dependent Claim
17 words
The process of claim 21 further characterized in that the quaternary ammonium compound is tetrabutyl ammonium hydroxide.
Claim 24
Dependent Claim
17 words
The process of claim 21 further characterized in that the quaternary ammonium compound is tetraamyl ammonium methoxide.
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) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |