| 摘要 |
A process for preparing an alkanolamine compound of formula I and/or formula II, or salts thereof: wherein: R1 and R2 are independently selected from hydrogen and a substituent; said process comprising the following steps: i) preparing glycidol in a one-pot reaction of glycerol with dimethylcarbonate, at a temperature of from 100°C-160°C and a molar ratio of glycerol to dimethylcarbonate of from 1:4-1:10, in the presence of an ionic liquid catalyst having the formula: [Cat+][X-] wherein: [Cat+] represents one or more cationic species, and [X-] represents one or more anionic species; ii) reacting the product of step i) with an amine of formula III, wherein: R1 and R2 are as defined for formula I and II. These alkanolamines are useful in the removal of CO2 and/or H2S from a CO2 and/or H2S containing gaseous stream. The preparation of the alkanolamines is conducted using selected ionic liquids under selected reaction conditions. |
