Preparation of ethyl levulinate from wheat stalk over Zr(SO4)2/SiO2
Preparation of ethyl levulinate from wheat stalk over Zr(SO4)2/SiO2
The results showed that the active component Zr(SO4 )2 was successfully adhered to the mesoporous SiO2 , and the acid amount of Zr(SO4)2/SiO2 increased with the increasing of the Zr(SO4)2 loadings. Finally, the wheat stalk was used as raw material and depolymerized over Zr(SO4)2/SiO2 to produce ethyl levulinate (EL). The reaction mixture was separated and purified by filtration and vacuum distillation. The kinetic characteristics and the reaction pathway were also studied. A comparative study sh