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
The Diels-Alder reaction of 5-methyl-2-cyclohexene-1-one (I) with butadiene was examined. It was concluded that addition of butadiene to the dienophile (I) took place from the opposite side to a secondary methyl side to give initially the cis adduct (IIb), which then epimerizes mostly to the trans derivative (IIa).