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Quantifying the efficiency of CO₂ capture by Lewis pairs.

ABSTRACT: A microfluidic strategy has been used for the time- and labour-efficient evaluation of the relative efficiency and thermodynamic parameters of CO₂ binding by three Lewis acid/base combinations, where efficiency is based on the amount of CO₂ taken up per binding unit in solution. Neither tBu₃P nor B(C₆F₅)₃ were independently effective at CO₂ capture, and the combination of the imidazolin-2-ylidenamino-substituted phosphine (NIiPr)₃P and B(C₆F₅)₃ was equally ineffective. Nonetheless, an archetypal frustrated Lewis pair (FLP) comprised of tBu₃P and B(C₆F₅)₃ was shown to bind CO₂ more efficiently than either the FLP derived from tetramethylpiperidine (TMP) and B(C₆F₅)₃ or the highly basic phosphine (NIiPr)₃P. Moreover, the proposed microfluidic platform was used to elucidate the thermodynamic parameters for these reactions.

SUBMITTER: Chi JJ

PROVIDER: S-EPMC5424443 | biostudies-literature | 2017 Apr

REPOSITORIES: biostudies-literature

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Quantifying the efficiency of CO2 capture by Lewis pairs.

Chi Jay J JJ Johnstone Timothy C TC Voicu Dan D Mehlmann Paul P Dielmann Fabian F Kumacheva Eugenia E Stephan Douglas W DW

Chemical science 20170220 4

A microfluidic strategy has been used for the time- and labour-efficient evaluation of the relative efficiency and thermodynamic parameters of CO2 binding by three Lewis acid/base combinations, where efficiency is based on the amount of CO2 taken up per binding unit in solution. Neither tBu3P nor B(C6F5)3 were independently effective at CO2 capture, and the combination of the imidazolin-2-ylidenamino-substituted ...[more]

PMID: 28553530

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