ABSTRACT
Using β-cyclodextrins (β-CD) as raw material, [β-CD-2-C3Im]+[OH]– and [β-CD-6-C3Im]+[OH]– ionic liquids were prepared, and further applied for biodiesel production. The results showed that the catalytic activity of [β-CD-6-C3Im]+[OH]− (6-ILs) was higher than that of [β-CD-2-C3Im]+[OH]− (2-ILs) because 6-ILs had larger specific surface area and higher base strength. Systematic studies indicated that the interaction of between cyclodextrin cavity and triglyceride molecules affected the role of basic active sites for the ester groups.
Funding
This work was financially supported by the Natural Science Foundation of China (number 21576059), Guizhou Provincial, State, University S&T Technology Joint Fund Program (numbers LH [2015]7762, LH [2015]7752) and BS201505, Talents Program of Guizhou Provincial Education Department (number [2012]099).