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US4608239A Expired / Lapsed US ⏱️ 0.0 years remaining

Removal of iron pentacarbonyl from gaseous streams containing carbon monoxide

Assignee: Eastman Chemical Co
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Filing: 1985-12-06
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Granted: 1986-08-26
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Expires: 2005-12-06
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Abstract

Abstract A process for removing iron pentacarbonyl from carbon monoxide feed gas, comprising contacting the gas with a removal agent comprising alkali metal hydroxide in association with a high boiling hydroxylic solvent to form a nonvolatile iron carbonylate salt, and separating the gas from said agent and the salt. Preferably, the removal agent is adsorbed on a porous support such as diatomaceous earth at a concentration of from about 1% to about 40% by weight of the support, and the solvent is selected from one or mixtures of ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, 2,2,4-trimethyl-1,3-pentanediol, glycerine, triethanolamine, 1,4-butanediol, 1,2-propanediol, 1,3-butanediol, 2,5-hexanediol, 1-hexanol and 2-hexanol.

Inventors

  • 👤 Thomas J. Devon

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 22:45
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/40

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 48 words
A process for removing iron pentacarbonyl from carbon monoxide feed gas, comprising contacting said gas with a removal agent comprising alkali metal hydroxide in association with a high boiling hydroxylic solvent to form a nonvolatile iron carbonylate salt, and separating said gas from said agent and said salt.
Claim 2
Dependent Claim 48 words
A process for removing iron pentacarbonyl from carbon monoxide feed gas, comprising contacting said gas with a removal agent comprising alkali metal hydroxide in association with a high boiling hydroxylic solvent to form a nonvolatile iron carbonylate salt, and separating said gas from said agent and said salt.
Claim 3
Dependent Claim 15 words
The process of claim 1 wherein said removal agent is adsorbed on a porous support.
Claim 4
Dependent Claim 17 words
The process of claim 1 wherein the solvent is selected from triethylene glycol, methanol and mixtures thereof.
Claim 5
Dependent Claim 60 words
The process of claim 1 wherein said removal agent is adsorbed on a porous support at a concentration of from about 1% to about 40% by weight of the support, and the solvent is selected from one or mixtures of ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol. 2,2,4-trimethyl 1,3-pentanediol, glycerine, triethanolamine, 1,4-butanediol, 1 2-propanediol, 1,3-butanediol, 2,5-hexanediol, 1-hexanol and 2-hexanol.
Claim 6
Dependent Claim 14 words
The process of any one of claims 1-4 wherein the support is diatomaceous earth.
Claim 7
Dependent Claim 17 words
The process of any one of claims 1-4 wherein the process is carried out in continuous manner.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1989-08-25 1990-02-24 1990-08-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1993-08-25 1994-02-24 1994-08-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1997-08-25 1998-02-24 1998-08-26 $7700.00 Window Closed / Lapsed

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