Continuous Esterification in Supercritical Carbon Dioxide
نویسندگان
چکیده
Heterogeneous esterification of 2-ethyl-1-hexanol and 2-ethyl hexanoic acid using AMBERLYST 15 as solid acid-catalyst in supercritical carbon dioxide (SC-CO2) has been studied. Effect of pressure (150, 200, and 250 bar), temperature (75, 110, and 140 C), flow rate of liquid CO2 (0.4, 0.6, and 0.8 mL.min), type of sample collection, and mole ratio of alcohol to acid (2:1, 1:1, and 1:2) on ester yield have been studied. With increasing temperature from 75 to 110 C the yield is increased, but at 140 C the yield is significantly decreased. The flow rate of SC-CO2 and the mole ratio of the alcohol to the acid have no significant effect on the esterification yield.
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