Abstract: The mechanism of the formation of formic acid and sodium bicarbonate by GLLDD has been studied. The absorption rate of CO2 by the organic phase was found to be almost ten times that by sodium formate solution. It was also shown by experiment that the mass transfer of CO2 from the gas phase into the aqueous phase proceeded essentially through the organic phase rather than directly. CO2 was absorbed in the organic phase before reacting with sodium formate solution to form NaHCO3 and complex amine carbonate. The organic phase was both the extractant of formic acid and the transporter of CO2.

摘要： 作者从化学工程原理出发,对气液液复分解过程的机理进行了解析.实验发现,有机相对二氧化碳的吸收速率远大于甲酸钠溶液吸收二氧化碳的速率,二者之比在10倍以上.实验还发现,二氧化碳经有机相进入水相的速率比二氧化碳直接进入水相的速率大许多.由此可见,二氧化碳在参与水相中的反应前,先经有机相吸收,然后再进入水相与甲酸钠进行复分解反应,反应过程中,有机相既是甲酸的萃取剂又是二氧化碳的输送剂.