CO2 absorption in amino acid-based ionic liquids: Experimental and theoretical studies

Improved the CO2 adsorption performance in cobalt oxide nanoparticles in the presence of DES

“…Adsorption apparatus performance has been mentioned in the prior studies by authors in detail. 32–36 The adsorption capacity of adsorbent, Q e (mg CO 2 g Co 3 O 4 NPs −1 ) was computed as follows:where Δ F C is the difference between the uncoated and the coated crystal with adsorbent frequencies and Δ F S is the difference between the frequencies of coated crystal under vacuum and the coated crystal after CO 2 adsorption.…”

“…Adsorption apparatus performance has been mentioned in the prior studies by authors in detail. [32][33][34][35][36] The adsorption capacity of adsorbent, Q e (mg CO 2 g Co 3 O 4 NPs À1 ) was computed as follows:…”

Synthesis and characterization of ammonium-based protic ionic liquids for carbon dioxide absorption

“…There are limited publications on CO 2 solubility in APILs consist of amines cation and carboxylate anion combination. However, for comparison purposes, the present CO 2 solubility data was compared with several developed ILs namely 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide [HMIM][NTf 2 ], 1-butyl-4-methyl pyridinium arginate [B 4 MPyr][L-Arg], 46 choline arginate [Cho][Arg] 47 and N , N -diethanolammonium pentanoate [DEEA][Pent]. 45 It has been observed that, the CO 2 absorption by APILs displayed a remarkable performance in comparison to traditional [HMIM][NTf 2 ].…”

“…For example, [TBA][C7] recorded 0.736 mole fraction of CO 2 at 20 bar, 298.15 K while [HMIM][NTf 2 ] demonstrated 0.415 absorption capacity at the same conditions. Research by Noorani et al demonstrated that their amino acid based-IL, 1-butyl-4-methyl pyridinium arginate [BMPyr][L-Arg] recorded the value of 0.594 CO 2 mole fraction at 6 bar, 298.15 K. 46 The same authors also synthesized choline based ILs coupled with amino acid anion. It was observed that the CO 2 absorption capacity by choline arginate [Cho][Arg] was 0.552 mole fraction at 3 bar, 298.15 K. Higher CO 2 solubility in AAILs compared to APILs could be contributed to the presence of two amines group in AAILs structure thus allowing more sites for gas absorption.…”

Improving performance of mesoporous MOF AlTp impregnated with ionic liquids for CO2 adsorption

“…were synthesized with a reported method in the literature [30][31][32] . The procedure to synthesize and purify the ionic liquids was similar to that described previously [33][34][35] . The water amount of the ionic liquids was evaluated by a Karl-Fischer titrator (720-KSS-Metrohm Herisau, Switzerland).…”