Catalysts and methods of increasing mass transfer rate of acid gas scrubbing solvents

Patent metadata

Field	Value
Publication number	US-9266102-B2
Application number	US-201313853234-A
Country	US
Kind code	B2
Filing date	Mar 29, 2013
Priority date	Mar 29, 2013
Publication date	Feb 23, 2016
Grant date	Feb 23, 2016

Abstract

A novel transition metal trimer compound/catalyst is disclosed. A method of increasing the overall mass transfer rate of acid gas scrubbing solvents utilizing that catalyst is also provided.

First claim

What is claimed:

1. A compound having a chemical formula:

2. A method of scrubbing an acid gas comprising: adding a catalyst compound to a solution including an acid gas and an acid gas scrubbing solvent, said catalyst compound having a chemical formula:

3. The method of claim 2 wherein said acid gas scrubbing solvent includes an amine.

4. The method of claim 2 , wherein said acid gas scrubbing solvent includes a mixture of a primary amine and a tertiary amine.

5. The method of claim 2 , wherein said acid gas scrubbing solvent is selected from a group consisting of monoethanolamine, 1-amino-2-propanol (1A2P), 3-amino-1-propanol, 2-amino-1-propanol, 2-amino-1-butanol, 1-amino-2-butanol, 3-amino-2-butanol, 2-(methylamino)ethanol (MAE), 2-(ethylamino)ethanol, morpholine, piperazine (PZ), 1-methylpiperazine (NMP), 2-methylpiperazine, hydroxypiperadine, 2-piperidineethanol, N-aminoethylpierazine (AEP), aminopropylmorpholine, 4-aminopiperidine, 2-Amino-2-methyl-1-propanol (AMP), diethanolamine (DEA), diisopropanolamine (DIPA), glycine, alanine, R-alannine, sarcosine, ethylene diamine (EDA), 1,3-propanediamine, 1,4-butanediamine, 1,5-pentanediamine, 1,6-hexanediamine, methyldiethanolamine (MDEA), triethanolamine (TEA), dimethylethanolamine (DMEA), N,N,N′,N′-tetramethyl-1,8-naphthalenediamine, diethylmonoethanolamine, dipropylmonoethanolamine, 1,4-dimethylpiperazine, N N,N′,N′-tetramethyl-1,6-hexanediamine, N,N,N′,N′-tetrakis(2-hydroxyethyl)ethylenediamine, N,N,N′,N′,N″-pentamethyldiethylenetriamine, N,N,N′,N′-tetramethylethylenediamine, N,N,N′,N′-tetramethylpropane-1,3-diamine, N,N,N′,N′-tetramethylbutane-1,4-diamine, N,N,N′,N′-tetramethyl-1,5-pentanediamine, potassium carbonate, and mixtures thereof.

6. The method of claim 2 wherein said catalyst compound is provided in said solution at a concentration of between 0.1 mM and 50 mM.

Assignees

• Univ Kentucky Res Found

Inventors

• Remias Joseph E
• Lippert Cameron A
• Liu Kunlei
• Odom Susan Anne
• Burrows Rachael Ann

Classifications

• B01D2252/504

  Mixtures of two or more absorbents · CPC title

• B01D2252/20431

  Tertiary amines · CPC title

• B01J31/2243 Primary

  At least one oxygen and one nitrogen atom present as complexing atoms in an at least bidentate or bridging ligand · CPC title

• B01D2252/602

  Activators, promoting agents, catalytic agents or enzymes · CPC title

• B01D53/1475

  Removing carbon dioxide · CPC title