US4279874A
Expired / Lapsed
US
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Cu(1) Acetylacetonate complexes for CO separation
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1980-04-17
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Granted: 1981-07-21
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Expires: 2000-04-17
Abstract
Abstract Carbon monoxide is selectively removed from a gas stream by a process which comprises contacting the gas stream with an absorbent solution containing the reaction product of a Cu(I) compound and a halogenated acetylacetone of the formula: ##STR1## where X is a halogen, R 1 is CX 3 , linear or branched C 1 to C 8 alkyl, C 4 to C 6 heterocycle containing O, S or N or C 6 to C 10 aryl, R 2 is hydrogen or C 1 to C 6 alkyl, or R 1 and R 2 are joined together to form a C 6 ring.
Inventors
- 👤 Gerald Doyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:40
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/14; B01D53/1493; B01D53/34; B01D53/46; B01D53/62; Y; Y02; Y02A; Y02A50/00; Y02A50/20
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
110 words
A process for removing CO from a gas stream which comprises contacting the gas stream with an absorbent solution containing an inert solvent and a Cu(I) salt, said salt being the reaction product of a Cu(I) compound and a halogenated acetylacetone of the formula: ##STR5## where X is F or Cl, R 1 is CX 3 , linear or branched C 1 to C 8 alkyl, C 4 to C 6 heterocycle containing O, S or N, or C 6 to C 10 aryl, R 2 is hydrogen or C 1 to C 6 alkyl, or R 1 and R 2 are joined together to form a C 6 ring.
Claim 2
Dependent Claim
110 words
A process for removing CO from a gas stream which comprises contacting the gas stream with an absorbent solution containing an inert solvent and a Cu(I) salt, said salt being the reaction product of a Cu(I) compound and a halogenated acetylacetone of the formula: ##STR5## where X is F or Cl, R 1 is CX 3 , linear or branched C 1 to C 8 alkyl, C 4 to C 6 heterocycle containing O, S or N, or C 6 to C 10 aryl, R 2 is hydrogen or C 1 to C 6 alkyl, or R 1 and R 2 are joined together to form a C 6 ring.
Claim 3
Dependent Claim
9 words
The process of claim 1 wherein X is fluorine.
Claim 4
Dependent Claim
10 words
The process of claim 1 wherein R 2 is hydrogen.
Claim 5
Dependent Claim
12 words
The process of claim 1 wherein the acetylacetone has the formula: ##STR6##
Claim 6
Dependent Claim
18 words
The process of claim 1 wherein the absorbent solution has a temperature of from -80° to +100° C.
Claim 7
Dependent Claim
20 words
The process of claim 1 wherein the gas stream has a CO partial pressure of from 0.001 to 1000 atm.
Claim 8
Dependent Claim
16 words
The process of claim 1 wherein the Cu(I) salt concentration is from 0.01 to 5 M.
Claim 9
Dependent Claim
23 words
The process of claim 1 wherein the Cu(I) compound is Cu 2 O, CuOH, CuOR or CuR where R is alkyl or aryl.
Claim 10
Dependent Claim
126 words
A continuous process for recovering CO from a gas stream which comprises contacting the gas stream with an absorbent solution containing an inert solvent and a Cu(I) salt, said salt being the reaction product of a Cu(I) compound and a halogenated acetylacetone of the formula: ##STR7## where X is F or Cl, R 1 is CX 3 , linear or branched C 1 to C 8 alkyl, C 4 to C 6 heterocycle containing O, S or N, or C 6 to C 10 aryl, R 2 is hydrogen or C 1 to C 6 alkyl, or R 1 and R 2 are joined together to form a C 6 ring, heating the so-treated solution at from 30° to 200° C., and recovering the desorbed Co.
Claim 11
Dependent Claim
126 words
A continuous process for recovering CO from a gas stream which comprises contacting the gas stream with an absorbent solution containing an inert solvent and a Cu(I) salt, said salt being the reaction product of a Cu(I) compound and a halogenated acetylacetone of the formula: ##STR7## where X is F or Cl, R 1 is CX 3 , linear or branched C 1 to C 8 alkyl, C 4 to C 6 heterocycle containing O, S or N, or C 6 to C 10 aryl, R 2 is hydrogen or C 1 to C 6 alkyl, or R 1 and R 2 are joined together to form a C 6 ring, heating the so-treated solution at from 30° to 200° C., and recovering the desorbed Co.
Claim 12
Dependent Claim
125 words
A continuous process for recovering CO from a gas stream which comprises contacting the gas stream with an absorbent solution containing an inert solvent and a Cu(I) salt, said salt being the reaction product of a Cu(I) compound and a halogenated acetylacetone of the formula: ##STR8## where X is F or Cl, R 1 is CX 3 , linear or branched C 1 to C 8 alkyl, C 4 to C 6 heterocycle containing O, S or N, or C 6 to C 10 aryl, R 2 is hydrogen or C 1 to C 6 alkyl, or R 1 and R 2 are joined together to form a C 6 ring, purging the so-treated solution with a CO-free inert gas, and recovering the desorbed CO.
Claim 13
Dependent Claim
125 words
A continuous process for recovering CO from a gas stream which comprises contacting the gas stream with an absorbent solution containing an inert solvent and a Cu(I) salt, said salt being the reaction product of a Cu(I) compound and a halogenated acetylacetone of the formula: ##STR8## where X is F or Cl, R 1 is CX 3 , linear or branched C 1 to C 8 alkyl, C 4 to C 6 heterocycle containing O, S or N, or C 6 to C 10 aryl, R 2 is hydrogen or C 1 to C 6 alkyl, or R 1 and R 2 are joined together to form a C 6 ring, purging the so-treated solution with a CO-free inert gas, and recovering the desorbed CO.
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) | 1984-07-20 | 1985-01-19 | 1985-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-20 | 1989-01-19 | 1989-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-20 | 1993-01-19 | 1993-07-21 | $7700.00 | Window Closed / Lapsed |