Li, Yafei published the artcileSynthesis of γ-valerolactone from ethyl levulinate hydrogenation and ethyl 4-hydroxypentanoate lactonization over supported Cu-Ni bimetallic, bifunctional catalysts, Related Products of esters-buliding-blocks, the main research area is ethyl levulinate valerolactone hydrogenation bimetallic catalyst.
A stable and highly efficient supported Cu-Ni catalysts for the conversion of Et levulinate (EL) to gamma;-valerolactone (GVL) was developed. The catalysts were characterized by XRD, TEM, TPD, TPR, and XPS. The support effect of metal oxides (Al2O3, SiO2, ZrO2, and TiO2) revealed that Cu-Ni supported on Al2O3 showed the highest activity for EL hydrogenation to Et 4-hydroxypentanoate (EHP) and the subsequent intramol. esterification of EHP to GVL. EHP intramol. esterification to GVL in the ethanol solution was a reversible reaction with an equilibrium constant of 24 at 453 K. A simplified reaction kinetic network was established. The solvent had a significant influence on the reaction equilibrium and the catalyst stability. Cu-Ni/Al2O3 in n-hexane solvent gave a higher GVL yield than that in ethanol solvent, and showed better recyclability than that in toluene solvent. With optimizing the conditions, Cu-Ni/Al2O3 gave 99.9% conversion and 98% selectivity to GVL with a space-time yield of 1.13 gGVL g-1cath-1 in n-hexane solvent with good recyclability.
Journal of Industrial and Engineering Chemistry (Amsterdam, Netherlands) published new progress about Crystallinity. 539-88-8 belongs to class esters-buliding-blocks, name is Ethyl 4-oxopentanoate, and the molecular formula is C7H12O3, Related Products of esters-buliding-blocks.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics