US4018705A
Expired / Lapsed
US
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Reactivation of a spent liquid phthalocyanine catalytic composite
Assignee: Universal Oil Products Co
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Filing: 1975-05-19
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Granted: 1977-04-19
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Expires: 1995-05-19
Abstract
Abstract A spent liquid catalytic phthalocyanine composite is reactivated by a method which comprises percolating said spent liquid phthalocyanine composite through a bed comprising an absorbent compound, recovering the percolated liquid catalytic phthalocyanine composite, adding a solid metal phthalocyanine compound to the recovered percolated liquid phthalocyanine composite and recovering the reactivated liquid catalytic phthalocyanine composite for reuse in organic oxidation reactions.
Inventors
- 👤 David H. J. Carlson
- 👤 Peter Urban
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:12
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/40; B01J31/4015; B01J31/4023; B01J31/403; B01J31/16; B01J31/1616; B01J31/18; B01J31/1805; B01J31/181; B01J31/1815; B01J31/26; C; C10; C10G; C10G27/00; C10G27/04; C10G27/10; B01J21/00; B01J21/02; B01J21/04; B01J21/18; B01J2231/00; B01J2231/70; B01J2531/00; B01J2531/02; B01J2531/0238; B01J2531/0241; B01J2531/025; B01J2531/10; B01J2531/16; B01J2531/50; B01J2531/56; B01J2531/60; B01J2531/62; B01J2531/64; B01J2531/80; B01J2531/84; B01J2531/845
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
162 words
The method of reactivating a spent liquid phthalocyanine catalyst comprising a phthalocyanine of a metal selected from the group consisting of cobalt, vanadium, iron, copper, nickel and chromium dispersed in a liquid hydroxide of a metal selected from the group consisting of sodium, potassium, calcium, rubidium, strontium, cesium, barium, francium, lithium and beryllium, said catalyst having been deactivated during treatment of hydrocarbons wherein mercaptans are oxidized to disulfides, which process comprises percolating said liquid phthalocyanine catalyst through a bed of solid absorbent selected from the group consisting of activated charcoal and gamma alumina at a temperature of from about 0° C. to about 300° C. and a pressure of from about 1 atmosphere to about 100 atmospheres at a liquid hourly space velocity of from about 0.5 to about 10, thereafter adding to said liquid catalyst a solid phthalocyanine of a metal selected from the group consisting of cobalt, vanadium, iron, copper, nickel and chromium, and recovering the resultant reactivated phthalocyanine catalyst.
Claim 2
Independent Claim
162 words
The method of reactivating a spent liquid phthalocyanine catalyst comprising a phthalocyanine of a metal selected from the group consisting of cobalt, vanadium, iron, copper, nickel and chromium dispersed in a liquid hydroxide of a metal selected from the group consisting of sodium, potassium, calcium, rubidium, strontium, cesium, barium, francium, lithium and beryllium, said catalyst having been deactivated during treatment of hydrocarbons wherein mercaptans are oxidized to disulfides, which process comprises percolating said liquid phthalocyanine catalyst through a bed of solid absorbent selected from the group consisting of activated charcoal and gamma alumina at a temperature of from about 0° C. to about 300° C. and a pressure of from about 1 atmosphere to about 100 atmospheres at a liquid hourly space velocity of from about 0.5 to about 10, thereafter adding to said liquid catalyst a solid phthalocyanine of a metal selected from the group consisting of cobalt, vanadium, iron, copper, nickel and chromium, and recovering the resultant reactivated phthalocyanine catalyst.
Claim 3
Dependent Claim
19 words
The method of claim 1 further characterized in that the metal phthalocyanine is in the form of a sulfonate.
Claim 4
Dependent Claim
15 words
The method of claim 1 further characterized in that the absorbent compound is activated charcoal.
Claim 5
Dependent Claim
14 words
The method of claim 1 further characterized in that the absorbent compound is γ-alumina.
Claim 6
Dependent Claim
27 words
The method of claim 1 further characterized in that the spent liquid catalytic phthalocyanine composite comprises cobalt phthalocyanine tetrasulfonate dissolved in a caustic medium comprising sodium hydroxide.
Claim 7
Dependent Claim
27 words
The method of claim 1 further characterized in that the spent liquid catalytic phthalocyanine composite comprises vanadium phthalocyanine tetrasulfonate dissolved in a caustic medium comprising potassium hydroxide.
Claim 8
Dependent Claim
27 words
The method of claim 1 further characterized in that the spent liquid catalytic phthalocyanine composite comprises molybdenum phthalocyanine tetrasulfonate dissolved in a caustic medium comprising calcium hydroxide.
Claim 9
Dependent Claim
17 words
The method of claim 1 further characterized in that the solid metal phthalocyanine is cobalt phthalocyanine tetrasulfonate.
Claim 10
Dependent Claim
17 words
The method of claim 1 further characterized in that the solid metal phthalocyanine is vanadium phthalocyanine tetrasulfonate.
Claim 11
Dependent Claim
17 words
The method of claim 1 further characterized in that the solid metal phthalocyanine is molybdenum phthalocyanine tetrasulfonate.
Claim 12
Dependent Claim
26 words
The method of claim 1 further characterized in that the resultant reactivated phthalocyanine catalyst is cobalt phthalocyanine tetrasulfonate dissolved in a caustic medium comprising sodium hydroxide.
Claim 13
Dependent Claim
26 words
The method of claim 1 further characterized in that the resultant reactivated phthalocyanine catalyst is vanadium phthalocyanine tetrasulfonate dissolved in a caustic medium comprising potassium hydroxide.
Claim 14
Dependent Claim
26 words
The method of claim 1 further characterized in that the resultant reactivated phthalocyanine, catalyst is molybdenum phthalocyanine tetrasulfonate dissolved in a caustic medium comprising calcium hydroxide.
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) | 1980-04-18 | 1980-10-18 | 1981-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-18 | 1984-10-18 | 1985-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-18 | 1988-10-18 | 1989-04-19 | $7700.00 | Window Closed / Lapsed |