Abstract
Sulfonated carbon catalysts were prepared by sulfonation of carbonized catkins from willow under different sulfonated conditions. Such materials were characterized by SEM, EDS, FTIR and TGA. The results indicated that sulfonated conditions might influence the acid density of the sulfonated carbon catalysts, but did not influence the microtubular structure. These sulfonated carbon catalysts exhibited high acid capacity, good thermal stability and better catalytic activity for the glycerol esterification. With a molar ratio of acetic acid to glycerol of 5:1, a catalyst amount of 5wt.% and a reaction temperature of 393K for 2h, glycerol was almost completely transformed into a mixture of glycerol esters including monoacetate, diacetate and triacetate. Controlling of acid density of the catalysts and reaction conditions could obtain highly desired products. Meanwhile, the hydrophobic property of these sulfonated carbon catalysts led to some tolerance to water. Moreover, excellent reusability of the catalyst was also confirmed by repeated experiments.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.