PMID- 30229246
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20181003
LR  - 20181022
IS  - 1463-9084 (Electronic)
IS  - 1463-9076 (Linking)
VI  - 20
IP  - 38
DP  - 2018 Oct 3
TI  - Intermolecular interactions upon carbon dioxide capture in deep-eutectic 
      solvents.
PG  - 24591-24601
LID - 10.1039/c8cp03724h [doi]
AB  - Herein we report the CO2 uptake in potential deep-eutectic solvents (DESs) formed 
      between hydrogen bond acceptors (HBAs) such as monoethanolammonium chloride 
      ([MEA.Cl]), 1-methylimidazolium chloride ([HMIM.Cl]) and tetra-n-butylammonium 
      bromide ([TBAB]) and hydrogen bond donors (HBDs) like ethylenediamine ([EDA]), 
      diethylenetriamine ([DETA]), tetraethylenepentamine ([TEPA]), 
      pentaethylenehexamine ([PEHA]), 3-amino-1-propanol ([AP]) and 
      aminomethoxypropanol ([AMP]) and analyzed the outcome in terms of the specific 
      polarity parameters. Among various combinations of HBAs and HBDs, [MEA.Cl][EDA]-, 
      [MEA.Cl][AP]-, [HMIM.Cl][EDA]- and [HMIM.Cl][AP] showed excellent CO2 uptake 
      which was further improved upon increasing the mole ratio of HBA : HBD from 1 : 1 
      to 1 : 4. The lowest CO2 uptake in [MEA.Cl][PEHA] (12.7 wt%) and [HMIM.Cl][PEHA] 
      (8.4 wt%) despite the highest basicity of [PEHA] infers that the basicity is not 
      the sole criteria for guiding the CO2 uptake but, in reality, CO2 capture in a 
      DES relies on the interplay of H-bonding interactions between each HBA and HBD. 
      The role of HBAs in guiding CO2 uptake was more prominent with weak HBDs such as 
      [TEPA] and [PEHA]. The speciation of absorbed CO2 into carbamate, carbonate, and 
      bicarbonate was favorable in DES characterized by comparable hydrogen bond donor 
      acidity (alpha) and hydrogen bond acceptor basicity (beta) values, whereas the 
      conversion of carbamate to carbonate/bicarbonate was observed to depend on alpha. The 
      addition of water in DES resulted in lower CO2 uptake due to the decreased 
      basicity (beta).
FAU - Shukla, Shashi Kant
AU  - Shukla SK
AUID- ORCID: 0000-0002-7102-5198
AD  - Technical Chemistry, Department of Chemistry, Chemical-Biological Centre, Umea 
      University, SE-90187 Umea, Sweden. shashi.kant.shukla@umu.se 
      jyri-pekka.mikkola@umu.se.
FAU - Mikkola, Jyri-Pekka
AU  - Mikkola JP
AD  - Technical Chemistry, Department of Chemistry, Chemical-Biological Centre, Umea 
      University, SE-90187 Umea, Sweden. shashi.kant.shukla@umu.se 
      jyri-pekka.mikkola@umu.se and Industrial Chemistry & Reaction Engineering, 
      Department of Chemical Engineering, Johan Gadolin Process Chemistry Centre, Abo 
      Akademi University, FI-20500 Abo-Turku, Finland.
LA  - eng
PT  - Journal Article
PL  - England
TA  - Phys Chem Chem Phys
JT  - Physical chemistry chemical physics : PCCP
JID - 100888160
EDAT- 2018/09/20 06:00
MHDA- 2018/09/20 06:01
CRDT- 2018/09/20 06:00
PHST- 2018/09/20 06:00 [pubmed]
PHST- 2018/09/20 06:01 [medline]
PHST- 2018/09/20 06:00 [entrez]
AID - 10.1039/c8cp03724h [doi]
PST - ppublish
SO  - Phys Chem Chem Phys. 2018 Oct 3;20(38):24591-24601. doi: 10.1039/c8cp03724h.