01866nas a2200241   4500008004100000022001400041245011300055210006900168260000800237300001400245490000800259520106200267653001801329653002101347653001301368653001301381653002201394100002501416700002201441700002601463700000501489856013001494       2023                        eng d  a0008-403400aActivity performance and kinetics for glycerol carbonylation with urea over Zn-Co mixed metal oxide catalyst0 aActivity performance and kinetics for glycerol carbonylation wit  cAPR  a2075-20930 v1013 a<p>
	Efficient carbonylation of glycerol using urea with Zn-Co mixed metal oxide (MMO) catalyst has been achieved. Various methods of catalyst preparation were explored for glycerol carbonate (GC) synthesis. The optimized method of catalyst preparation was found to be co-precipitation (CP) with a Zn:Co ratio of 70:30, achieving 81% glycerol conversion with 97% GC selectivity. X-ray diffraction (XRD) studies revealed the formation of ZnO, Co-3 O-4, and spinel ZnCo2O4 phases. Thermal treatment given to the catalyst allows insertion of Zn cations into Co3O4 lattice forming ZnCo2O4 phase which was also evidenced in X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy. Herein, for the first time, reaction kinetics was studied to propose the rate equation, based on which a plausible reaction pathway is proposed involving two-site adsorption of glycerol (basic site) and urea (acidic site), which undergo carbonylation followed by cyclization into GC. A recycle study and hot filtration test have proven the reusability of the catalyst.</p>
10aCarbonylation10acyclic carbonate10aGlycerol10akinetics10amixed metal oxide1 aKondawar, Sharda, E.1 aKasar, Gaytri, B.1 aKhatua, Angshuman, S.1 a  uhttps://library.ncl.res.in/content/activity-performance-and-kinetics-glycerol-carbonylation-urea-over-zn-co-mixed-metal-oxide