In this paper, we report a study on the reactivity of the phenylium ion with acetylene, by measuring product yield as a function of pressure and temperature using mass-selected ion mobility mass spectrometry. The reactivity is dominated by a rapid sequential addition of acetylene to form covalently bonded C8H7(+) and C10H9(+) ions with an overall rate coefficient of 7-5 × 10(-10) cm(3) s(-1), i...

Benzene and toluene were pyrolyzed under highly argon-diluted conditions at a nominal pressure of 20 bar in single-pulse shock tube coupled to gas chromatography/gas chromatography–mass spectrometry (GC/GC–MS) diagnostics. Concentration evolutions polycyclic aromatic hydrocarbon (PAH) intermediates measured temperature range 1100–1800 K by analyzing the post-shock mixtures. Different PAH specia...

Merging the latest advances in field of gold catalysis and efficiency hexafluoro-2-propanol (HFIP), a gold-catalyzed orthogonal tandem reaction has been developed to access carbocyclic ketone on naphthalene substrates. The methodology involved cycloisomerization/nucleophilic addition C→O rearrangement. HFIP solvent most probably acted as Lewis-acid isochromene derivatives, through hydrogen dono...

The application of maximum likelihood multivariate calibration methods to the  uorescence emission spectra of mixtures of acenaphthylene, naphthalene, and phenanthrene in acetonitrile is described. Maximum likelihood principal components regression (MLPCR) takes into account the measurement error structure in the spectral data in constructing the calibration model. Measurement errors for the ...

The oxidation of polycyclic aromatic compounds was studied in systems consisting of laccase from Trametes versicolor and so-called mediator compounds. The enzymatic oxidation of acenaphthene, acenaphthylene, anthracene, and fluorene was mediated by various laccase substrates (phenols and aromatic amines) or compounds produced and secreted by white rot fungi. The best natural mediators, such as ...