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Integrated CO2 capture-fixation chemistry via interfacial ionic liquid catalyst in laminar gas/liquid flow.


ABSTRACT: Simultaneous capture of carbon dioxide (CO2) and its utilization with subsequent work-up would significantly enhance the competitiveness of CO2-based sustainable chemistry over petroleum-based chemistry. Here we report an interfacial catalytic reaction platform for an integrated autonomous process of simultaneously capturing/fixing CO2 in gas-liquid laminar flow with subsequently providing a work-up step. The continuous-flow microreactor has built-in silicon nanowires (SiNWs) with immobilized ionic liquid catalysts on tips of cone-shaped nanowire bundles. Because of the superamphiphobic SiNWs, a stable gas-liquid interface maintains between liquid flow of organoamines in upper part and gas flow of CO2 in bottom part of channel. The intimate and direct contact of the binary reagents leads to enhanced mass transfer and facilitating reactions. The autonomous integrated platform produces and isolates 2-oxazolidinones and quinazolines-2,4(1H,3H)-diones with 81-97% yields under mild conditions. The platform would enable direct CO2 utilization to produce high-valued specialty chemicals from flue gases without pre-separation and work-up steps.

SUBMITTER: Vishwakarma NK 

PROVIDER: S-EPMC5343516 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature

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Integrated CO<sub>2</sub> capture-fixation chemistry via interfacial ionic liquid catalyst in laminar gas/liquid flow.

Vishwakarma Niraj K NK   Singh Ajay K AK   Hwang Yoon-Ho YH   Ko Dong-Hyeon DH   Kim Jin-Oh JO   Babu A Giridhar AG   Kim Dong-Pyo DP  

Nature communications 20170306


Simultaneous capture of carbon dioxide (CO<sub>2</sub>) and its utilization with subsequent work-up would significantly enhance the competitiveness of CO<sub>2</sub>-based sustainable chemistry over petroleum-based chemistry. Here we report an interfacial catalytic reaction platform for an integrated autonomous process of simultaneously capturing/fixing CO<sub>2</sub> in gas-liquid laminar flow with subsequently providing a work-up step. The continuous-flow microreactor has built-in silicon nano  ...[more]

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