title: Liquid phase esterification of acetic acid over WO3 promoted β-SiC in a solvent free system.
abstract: A series of tungstate promoted β-SiC catalysts was synthesized by a wetness impregnation method. The as synthesized catalysts were unambiguously characterized by XRD, Raman, FTIR, XPS, UV-Vis DRS, TEM, BET surface areas and FE-SEM, and simultaneously the total amount of the acidity of the catalysts was estimated by NH(3)-TPD. The catalytic activities of the synthesized materials were tested in the liquid phase esterification of acetic acid with n-butanol in a solvent free medium. The reaction parameters were optimized to a temperature of 120 °C, molar ratio of butanol and acetic acid of 1:2 and a reaction time of 6 h after performing a number of experiments. Under the optimum conditions, the catalytic esterification revealed a significant effect of 88% conversion with 100% selectivity to butyl acetate in 20 wt% WO(3)/β-SiC. This is the first report on the effective utilization of β-SiC as a catalyst support for liquid phase esterification of acetic acid.
authors.affiliation: Advanced Materials Technology Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751013, Odisha, India.
authors.forename: Gopa
authors.initials: G
authors.lastname: Mishra
authors.forename: Gobinda C
authors.initials: GC
authors.lastname: Behera
authors.forename: S K
authors.initials: SK
authors.lastname: Singh
authors.forename: K M
authors.initials: KM
authors.lastname: Parida
mesh_terms: D020001:1-Butanol / Q000737:chemistry; D019342:Acetic Acid / Q000737:chemistry*; D017554:Carbon Compounds, Inorganic / Q000138:chemical synthesis / Q000737:chemistry*; D002384:Catalysis; D004951:Esterification; D008958:Models, Molecular; D010087:Oxides / Q000737:chemistry*; D017655:Silicon Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D013057:Spectrum Analysis; D014414:Tungsten / Q000737:chemistry*
chemical_list: D017554:Carbon Compounds, Inorganic; D010087:Oxides; D017655:Silicon Compounds; D020001:1-Butanol; C511604:tungsten oxide; D019342:Acetic Acid; D014414:Tungsten; C022088:silicon carbide