title: Optimization of levulinic acid from lignocellulosic biomass using a new hybrid catalyst.
abstract: Conversion of glucose, empty fruit bunch (efb) and kenaf to levulinic acid over a new hybrid catalyst has been investigated in this study. The characterization and catalytic performance results revealed that the physico-chemical properties of the new hybrid catalyst comprised of chromium chloride and HY zeolite increased the levulinic acid production from glucose compared to the parent catalysts. Optimization of the glucose conversion process using two level full factorial designs (2(3)) with two center points reported 55.2% of levulinic acid yield at 145.2 °C, 146.7 min and 12.0% of reaction temperature, reaction time and catalyst loading, respectively. Subsequently, the potential of efb and kenaf for producing levulinic acid at the optimum conditions was established after 53.2% and 66.1% of efficiencies were reported. The observation suggests that the hybrid catalyst has a potential to be used in biomass conversion to levulinic acid.
authors.affiliation: Chemical Reaction Engineering Group (CREG), Energy Research Alliance, Faculty of Chemical Engineering, Universiti Teknologi Malaysia, 81310 UTM, Skudai, Johor, Malaysia.
authors.forename: Nazlina
authors.initials: N
authors.lastname: Ya'aini
authors.forename: Nor Aishah Saidina
authors.initials: NA
authors.lastname: Amin
authors.forename: Mohd
authors.initials: M
authors.lastname: Asmadi
mesh_terms: D000143:Acids / Q000378:metabolism; D000704:Analysis of Variance; D018533:Biomass; D001709:Biotechnology / Q000379:methods*; D002384:Catalysis; D004055:Differential Thermal Analysis; D005638:Fruit / Q000737:chemistry; D005947:Glucose / Q000378:metabolism; D031584:Hibiscus / Q000737:chemistry; D007982:Levulinic Acids / Q000378:metabolism*; D008031:Lignin / Q000378:metabolism*; D008954:Models, Biological; D013696:Temperature; D013818:Thermogravimetry; D013997:Time Factors
chemical_list: D000143:Acids; D007982:Levulinic Acids; C036909:lignocellulose; D008031:Lignin; D005947:Glucose; C032246:levulinic acid