Synthesis of nickel–tungsten sulfide hydrodearomatization catalysts by the decomposition of oil-soluble precursors
作者:I. A. Sizova、A. B. Kulikov、M. I. Onishchenko、S. I. Serdyukov、A. L. Maksimov
DOI:10.1134/s0965544115080174
日期:2016.1
Nickel–tungsten sulfide catalysts for the hydrogenation of aromatic hydrocarbons have been prepared by the in situ decomposition of an oil-soluble tungsten hexacarbonyl precursor in a hydrocarbon feedstock using oil-soluble nickel salt nickel(II) 2-ethylhexanoate as a source of nickel. The in situ synthesized Ni–W–S catalyst has been characterized by X-ray photoelectron spectroscopy. The activity of
Anil-Synthese. 3. Mitteilung [1] Über die Darstellung von Styryl-Derivaten aus methyl-substituierten carbocyclischen Aromaten
作者:A. E. Siegrist、P. Liechti、H. R. Meyer、K. Weber
DOI:10.1002/hlca.19690520836
日期:——
1,4-Diphenylbutadien-, Tolan-, 1,4-Diphenylbutadiin-, Naphtalin-, Anthracen-und Phenanthren-Reihe werden mit Anilen aromatischer Aldehyde in Dimethylformamid in Gegenwart von Kaliumhydroxid oder Kalium-t-butylat zu Styryl-Derivaten umgesetzt.
甲基取代碳环芳烃,二苯基,三联苯,Stilben-,1,4-二苯基丁二烯-,Tolan-,1,4-二苯基丁二烯-,萘酚-,蒽环与苯并蒽-苯并二氮杂-苯并二氢萘Gegenwart von Kaliumhydroxid oder Kal-叔丁基中的二甲基甲酰胺。
Skeletal Transformation of Unactivated Arenes Enabled by a Low-Temperature Dearomative (3 + 2) Cycloaddition
作者:Sajan Pradhan、Fahimeh Mohammadi、Jean Bouffard
DOI:10.1021/jacs.3c02314
日期:2023.6.7
exchange of the ring carbons: a two-carbon fragment from the original aromatic ring is replaced with another from the incoming dienophile, introducing an unconventional disconnection for the synthesis of ubiquitous aromatic building blocks. Applications of this two-step sequence to the preparation of substituted acenes, isotopically labeled molecules, and medicinally relevant compounds are demonstrated
Nickel-tungsten sulfide aromatic hydrocarbon hydrogenation catalysts synthesized in situ in a hydrocarbon medium
作者:I. A. Sizova、S. I. Serdyukov、A. L. Maksimov
DOI:10.1134/s0965544115060110
日期:2015.7
Nickel-tungsten sulfide nanocatalysts for the hydrogenation of aromatic hydrocarbons (HCs) have been prepared by the in situ decomposition of a nickel thiotungstate precursor in a HC feedstock using 1-butyl-1-methylpiperidinium nickel thiotungstate complex [BMPip](2)Ni[WS4](2) as the precursor. The in situ synthesized particles have been characterized by X-ray photoelectron spectroscopy and high-resolution transmission electron microscopy. It has been shown that the resulting Ni-W-S particles are nanoplates associated in multilayer agglomerates; the average length of the Ni-W-S particles is 6 nm; the average number of layers in the multilayer packaging is three. The catalytic activity of the synthesized catalysts has been studied in the hydrogenation of model mixtures of mono- and bicyclic aromatic HCs and in the conversion of dibenzothiophene in a batch reactor at a temperature of 350A degrees C and a hydrogen pressure of 5.0 MPa. It has been shown that the studied catalysts can be used for the hydrofining of light cycle oil.
Kruber, Chemische Berichte, 1939, vol. 72, p. 1972,1975