ortho-Xylene (1,2-dimethyl-benzene, o-xylene, or OX) is an aromatic compound that is commonly derived from crude oil sources. It is found in the mixed xylenes stream, which is a mixture of ortho-xylene, metaxylene (MX), and para-xylene (PX). While very similar in structure, these...
structure. The top layer is sacrificial and serves two functions: (1) sealing of intercrystalline defects from transport and (2) reduction of the loading on the underlying layer to prevent transport ofo-xylene.Silicaliteon ZSM-5 proved to be the optimum layer combination inpervaporationtesting, ...
Structure and thermal decomposition of para- and ortho-xylene on Pt(111): a HREELS, LEED and TPD studyStructure and thermal decomposition of para- and ortho-xylene on Pt(111): a HREELS, LEED and TPD studyHigh resolution electron energy loss spectroscopy (HREELS), thermal desorption spectroscopy...
Kekul structure, resonance, frontier orbital theory, density functional theory, kinetics.Faisant appel la thorie de la densit fonctionnelle B3LYP en relation avec l'ensemble de base 6-311++G**, on a trouv que les vitesses relatives des attaques initiales, qui dterminent la vitesse de la rac...
Fluorescence and Ultraviolet Absorption Spectra, and the Structure and Vibrations of 1,2,3,4-Tetrahydronaphthalene in Its S 1 (π,π*) State The ultraviolet absorption spectra in the static vapor phase and the laser induced fluorescence spectra (both fluorescence excitation and single vibronic l.....
Structure and thermal decomposition of para- and ortho-xylene on Pt(111): a HREELS, LEED and TPD studydoi:10.1016/0039-6028(93)90683-bD.E. WilkC.D. StannersY.R. ShenG.A. Somorjai
It was shown that the shape, size, and structure of particles are determined by processes occurring in the pyrolysis zone, and its temperature is the most important technological parameter, together with the residence time in the reaction zone of products formed in the decomposition of ortho- ...
and it is concluded that since the products of ozonolysis of o-xylene are determined by the relative energies of the transition states leading to the four possible primary ozonides, these transition states should be the focus of theory.Key words: Kekul茅 structure, resonance, frontier ...
kekule structureresonancefrontier orbital theorydensity functional theorykineticsUsing B3LYP density functional theory in conjunction with the 6-311++G** basis set, the relative rates of the initial rate-determining attack of ozone upon the carboncarbon bonds of o-xylene are found to be 4,5- 3,4...
structure‐property relationsX‐rayWe synthesize a new ortho -xylenyl-bridged substituted metallocene catalyst which surprisingly affords ethylene-1-hexene copolymers with broad molecular weight distribution (MWD), when activated with methylaluminoxane (MAO). In order to investigate the reasons of t...