Performance of immobilized tertiary amine solid sorbents for the capture of carbon dioxide

Autor:	McMahan L. Gray, Henry W. Pennline, Daniel J. Fauth, K. J. Champagne, John P. Baltrus
Rok vydání:	2008
Předmět:	Flue gas Sorbent Tertiary amine Chemistry Inorganic chemistry Management Monitoring Policy and Law Pollution Industrial and Manufacturing Engineering chemistry.chemical_compound General Energy Adsorption Desorption Carbon dioxide Organic chemistry Amine gas treating Stoichiometry
Zdroj:	International Journal of Greenhouse Gas Control. 2:3-8
ISSN:	1750-5836
DOI:	10.1016/s1750-5836(07)00088-6
Popis:	The capture of carbon dioxide (CO2) from a simulated flue gas stream was achieved by utilizing immobilized tertiary amine solid sorbents. The tertiary amine immobilized in these solid substrates was 1, 8 Diazabicyclo-[5.4.0]-undec-7-ene (DBU) and it has the stoichiometric capability of capturing carbon dioxide at a 1:1 R-NH2:CO2 molar ratio. This is a unique feature compared to other primary and secondary amines which capture CO2 at a 2:1 molar ratio, thus making the immobilized DBU solid sorbents competitive with existing commercially available sorbents and liquid amine-based capture systems. The immobilized DBU solid sorbents prepared in this study exhibit acceptable CO2 capture capacities of 3.0 mol CO2/kg sorbent at 298 K; however, at the critical operational temperature of 338 K, the capacity was reduced to 2.3 mol/kg sorbent. The DBU sorbents did exhibit acceptable stability over the adsorption/desorption temperature range of 298–360 K based on XPS and TGA analyses.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1c2c6686d940673e2b3b31a38f9d92b2 https://doi.org/10.1016/s1750-5836(07)00088-6 Zobrazit plný text záznamu Full Text from ScienceDirect