Pyrrolidinium- and piperidinium-based ioic liquids for carbon dioxide absorption

摘要

PURPOSE: The vapor pressure of itself nearly has no and the thermal stability excels. The property of well absorbing the carbon dioxide has. The demount of the absorbed carbon dioxide can be proceed in the relatively low temperature. The initial uptake knuckle can be kept nearly even when reiterating the absorption, and degassing. CONSTITUTION: The ionic liquid carbon dioxide absorbent. With the cation selected from the chemical formula 1 and chemical formula 2 of one kind or 2 kind. It is included of the negative ion selected from the dialkyl phosphate of the alkyl phosphate of the chemical formula 3 and chemical formula 4 of one kind or 2 kind. In the chemical formula 1. R1 and R2 the alkyl group of the respective H or the carbon number 1 ~ 8.