Role of Amine Structure on Hydrogen Sulfide Capture from Dilute Gas Streams Using Solid Adsorbents
Abstract
The hydrogen sulfide composition in biogas ranges from 0 to 5% depending on the feed source to the biogas digester. To meet renewable natural gas specifications of 0–4 ppm of H2S content, technologies that remove H2S from raw biogas feeds are needed. This contribution assesses three adsorbents with similar textural and physical properties but with different amines grafted to the surface. Specifically, materials containing primary, secondary, and tertiary amines at the end of a propyl surface linker grafted on a silica support are explored. H2S adsorption isotherms and cyclic studies are presented for these materials, and it is shown that secondary amines have the best amine efficiency while tertiary amines are the most stable for H2S capture, of the materials studied. The results suggest the consideration of secondary and tertiary amines for the design of amine adsorbents suitable for H2S removal in dilute gas streams over multiple cycles.
- Authors:
-
[1];
[1]
- Georgia Inst. of Technology, Atlanta, GA (United States). School of Chemical & Biomolecular Engineering
- Publication Date:
- Research Org.:
- Energy Frontier Research Centers (EFRC) (United States). Center for Understanding and Control of Acid Gas-induced Evolution of Materials for Energy (UNCAGE-ME)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1470627
- Grant/Contract Number:
- SC0012577
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Energy and Fuels
- Additional Journal Information:
- Journal Volume: 32; Journal Issue: 6; Related Information: UNCAGE-ME partners with Georgia Institute of Technology (lead); Lehigh University; Oak Ridge National Laboratory; University of Alabama; University of Florida; University of Wisconsin; Washington University in St. Louis; Journal ID: ISSN 0887-0624
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 09 BIOMASS FUELS; catalysis (heterogeneous); defects, membrane; carbon capture; materials and chemistry by design; synthesis (novel materials); synthesis (self-assembly); synthesis (scalable processing)
Citation Formats
Okonkwo, Claudia N., Okolie, Chukwuemeka, Sujan, Achintya, Zhu, Guanghui, and Jones, Christopher W. Role of Amine Structure on Hydrogen Sulfide Capture from Dilute Gas Streams Using Solid Adsorbents. United States: N. p., 2018.
Web. doi:10.1021/acs.energyfuels.8b00936.
Okonkwo, Claudia N., Okolie, Chukwuemeka, Sujan, Achintya, Zhu, Guanghui, & Jones, Christopher W. Role of Amine Structure on Hydrogen Sulfide Capture from Dilute Gas Streams Using Solid Adsorbents. United States. https://doi.org/10.1021/acs.energyfuels.8b00936
Okonkwo, Claudia N., Okolie, Chukwuemeka, Sujan, Achintya, Zhu, Guanghui, and Jones, Christopher W. Tue .
"Role of Amine Structure on Hydrogen Sulfide Capture from Dilute Gas Streams Using Solid Adsorbents". United States. https://doi.org/10.1021/acs.energyfuels.8b00936. https://www.osti.gov/servlets/purl/1470627.
@article{osti_1470627,
title = {Role of Amine Structure on Hydrogen Sulfide Capture from Dilute Gas Streams Using Solid Adsorbents},
author = {Okonkwo, Claudia N. and Okolie, Chukwuemeka and Sujan, Achintya and Zhu, Guanghui and Jones, Christopher W.},
abstractNote = {The hydrogen sulfide composition in biogas ranges from 0 to 5% depending on the feed source to the biogas digester. To meet renewable natural gas specifications of 0–4 ppm of H2S content, technologies that remove H2S from raw biogas feeds are needed. This contribution assesses three adsorbents with similar textural and physical properties but with different amines grafted to the surface. Specifically, materials containing primary, secondary, and tertiary amines at the end of a propyl surface linker grafted on a silica support are explored. H2S adsorption isotherms and cyclic studies are presented for these materials, and it is shown that secondary amines have the best amine efficiency while tertiary amines are the most stable for H2S capture, of the materials studied. The results suggest the consideration of secondary and tertiary amines for the design of amine adsorbents suitable for H2S removal in dilute gas streams over multiple cycles.},
doi = {10.1021/acs.energyfuels.8b00936},
journal = {Energy and Fuels},
number = 6,
volume = 32,
place = {United States},
year = {Tue May 01 00:00:00 EDT 2018},
month = {Tue May 01 00:00:00 EDT 2018}
}
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Works referencing / citing this record:
Amine‐functionalized ordered mesoporous silicas as model materials for liquid phase acid capture
journal, January 2020
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