Chemisorption of carbon dioxide in imidazolium based ionic liquids with carboxylic anions

Autor:	Thomas Schiestel, Natalie Deubler, Thomas Hirth, Jessica Blath
Rok vydání:	2012
Předmět:	General Chemical Engineering Inorganic chemistry Enthalpy Superbase Solvation General Chemistry Industrial and Manufacturing Engineering Ion chemistry.chemical_compound chemistry Chemisorption Ionic liquid Environmental Chemistry Carboxylate Absorption (chemistry)
Zdroj:	Chemical Engineering Journal. :152-158
ISSN:	1385-8947
DOI:	10.1016/j.cej.2011.11.042
Popis:	The absorption ability of carbon dioxide in ionic liquids (IL) containing a basic anion like acetate was investigated and compared to common ionic liquids as well as nitrogen data. Thereby, the IL showed chemisorption due to a formation of carboxylate at the imidazolium ring. The results obtained from [EMIM] [pivalate] are promising, since the IL could be completely recovered with a simple evacuating step, and without further heating, while having a similar absorption ability than [EMIM] [OAc]. From the temperature dependency of the carbon dioxide absorption in [EMIM] [OAc] it can be seen that the solvation enthalpy is much smaller compared to common ionic liquids with physical absorption. Furthermore, the addition of the superbase DBU to [EMIM] [OAc] increased the CO2-loading capacity.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::702b10387c33813efbc5cc339abf4086 https://doi.org/10.1016/j.cej.2011.11.042 Zobrazit plný text záznamu Full Text from ScienceDirect