Papers by Keyword: Acenaphthene

Abstract: To obtain new fine chemical and intermediate of functional polymer material, the acylation of acenaphthene with benzoyl chloride to 5-acetylacenaphthene catalyzed by silica-supported phosphotungstic heteropoly acid (PW/SiO2) was investigated. Pure 5-acetylacenaphthene was obtained and its structure was identified by GC/MS, FT-IR and 1H NMR spectra. The effects of experimental parameters on the catalytic acylation reaction and the possibility of reusability of PW/SiO2 catalyst were studied. Under optimun conditions, the yield and the selectivity of 5-acetylacenaphthene were up to 81.3 % and 93.6 %, respectively. PW/SiO2 shows well catalytic activity after running for 5 times. The experimental results indicate that PW/SiO2 is a recyclable and environmentally benign catalyst in the synthesis of 5-acetylacenaphthene.

Abstract: Acylation of acenaphthene with benzoyl chloride to 5-benzoylacenaphthene catalyzed by [Bmin]Cl/AlCl₃ ([Bmin]⁺ = 1-butyl-3-methylimidazolium cation) ionic liquid was investigated. Pure 5-benzoylacenaphthene was obtained and the structure of 5-benzoylacenaphthene was identified by GC/MS, FT-IR and ¹H NMR spectra. The yield of 5-benzoylacenaphthene was up to 85.2 % and the selectivity towards 5-benzoylacenaphthene was up to 89.6 %. The [Bmim]C1/A1C1₃ ionic liquid catalyst shows well catalytic activity after running for 5 times. The facile product separation and the recycling performance of the ionic liquid catalyst is expected to contribute to the development of clean and environmentally friendly strategy for the synthesis of 5-benzoylacenaphthene.

Abstract: 3-D Fluorescence Spectrometry analysis and sorption experiments of Acenaphthene (Acp), one of the polycyclic aromatic hydrocarbons (PAHs), were carried on in this paper. Under the experimental conditions, the optimized excitation/emission wavelength (λex/λem) was 280/320nm. The correlative coefficient of 0.998 and the relative standard deviation of 4.03%(n=5) could be obtained over the linear ranges of 0.025mg/L~1mg/L for the calibration curve. The sorption tests of Acp to surface sediment in Chongqing Section of the Yangtze River showed that the sorption isotherms were fitted with different types of model, including traditional linear partition model and Freundlich model. According to the fitted value of model, the sorption behaviors of Acp to the surface sediment was not affected by the single sorption mechanism but the combined action of linear partition process and surface sorption.

Abstract: In order to prepare new functional macromolecule material, the coupling reaction of acenaphthene catalyzed by [Bmim]Cl/FeCl3 ionic liquid was investigated under mild reaction conditions and without any additional organic solvent. Pure 3,3’-biacenaphthene, which is used as intermediate of function aromatic polymer material, was obtained by recrystalling and column chromatography from the reaction mixture and was determined by GC/MS, 1HNMR and FTIR analysis. The influence of various reaction conditions on the coupling reaction of acenaphthene were studied by GC analysis and the optimum synthesis conditions of the reaction were obtain. Under optimun conditions, the yield of 3,3’-biacenaphthene will be 63.5 % and selectivity of that will be 85.6 %. Further more, [Bmim]Cl/FeCl3 is environmentally benign catalyst and solvent and can be reused.