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

• US 9,266,102 B2
• Filed: 03/29/2013
• Issued: 02/23/2016
• Est. Priority Date: 03/29/2013
• Status: Active Grant

• Current Assignee: University Of Kentucky Research Foundation (University of Kentucky)
• Original Assignee: University Of Kentucky Research Foundation (University of Kentucky)
• Inventors: Remias, Joseph E., Lippert, Cameron A., Liu, Kunlei, Odom, Susan Anne, Burrows, Rachael Ann
• Primary Examiner(s): Qian, Yun
• Application Number:
  US13/853,234
• Publication Number:
  US 20140296061A1
• Time in Patent Office: 1,061 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: B01D 2252/20421 Primary amines
• CPC Class Codes: B01D 2252/20431 Tertiary amines
• CPC Class Codes: B01D 2252/504 Mixtures of two or more absorbents
• CPC Class Codes: B01D 2252/602 Activators, promoting agents, catalytic agents or enzymes
• CPC Class Codes: B01D 2258/0283 Flue gases
• CPC Class Codes: B01D 53/1475 Removing carbon dioxide
• CPC Class Codes: B01D 53/1493 Selection of liquid materials for use as absorbents
• CPC Class Codes: B01J 2531/0252 Salen ligands or analogues, e.g. derived from ethylenediamine and salicylaldehyde
• CPC Class Codes: B01J 2531/26 Zinc
• CPC Class Codes: B01J 31/2243 At least one oxygen and one nitrogen atom present as complexing atoms in an at least bidentate or bridging ligand
• CPC Class Codes: Y02C 20/40 of CO2

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.

Claims

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.