IMMIDAZOLIUM CATION BASED IONIC LIQUID FOR SELECTIVE SEPARATION OF CARBON DIOXIDE AND ITS USE

摘要

PURPOSE: An imidazolium-based ionic liquid for isolating carbon dioxide is provided to have superior carbon dioxide absorbing ability and to easily separate absorbed carbon dioxide by heating. CONSTITUTION: An imidazolium-based ionic liquid compound has carbon dioxide absorption ability and is denoted by chemical formula 1. A carbon dioxide absorbing agent contains the compound. A method for isolating carbon dioxide from a gas mixture comprises the steps of: absorbing carbon dioxide from the gas mixture using the carbon dioxide absorbing agent; and deaerating the absorbed carbon dioxide.