Wang, Ding-kai published the artcilePreparation of ethyl levulinate from wheat stalk over Zr(SO4)2/SiO2, HPLC of Formula: 539-88-8, the main research area is catalyst dosage wheat stalk ethyl levulinate; Ethyl levulinate; glucose; solid acid Zr(SO4)2/SiO2; wheat stalk.
A series of Zr(SO4)2/SiO2 solid acid catalysts with different Zr(SO4)2 loadings were prepared by water-soluble-impregnation method at room temperature Then, the prepared catalysts were characterized by Fourier transform IR spectroscopy, transmission electron microscopy and energy-dispersive X-ray spectrum, X-ray diffraction, adsorption/desorption of N2, and temperature programmed desorption of NH3. 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 Et 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 showed that 20 weight% Zr(SO4)2/SiO2 exhibited higher catalytic activity. When reaction temperature, time, catalyst dosage and Zr(SO4)2 loadings were 190°C, 50 min, 20 weight% and 30 weight%, the EL yield reached a maximum of 17.14%. The relative content of EL exceeded 90% after three steps of distillation
Turkish Journal of Chemistry published new progress about Adsorption. 539-88-8 belongs to class esters-buliding-blocks, name is Ethyl 4-oxopentanoate, and the molecular formula is C7H12O3, HPLC of Formula: 539-88-8.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics