Hydrogenation of aromatic hydrocarbons in a mixture with thiophene on sulfided Pd/Al2O3 catalysts
- 41 Downloads
The activity and stability of aluminum-palladium catalysts in the hydrogenation of aromatic hydrocarbons mixed with thiophene were studied. The catalysts were obtained by impregnation of γ-A2O3 with aqueous solutions of salts of palladium complexes. Preliminary sulfiding followed by oxidative activation of Pd/Al2O3 catalysts were found to favor the formation of such palladium state on the surface at which the hydrogenation of aromatic hydrocarbons in the presence of sulfur-containing impurities proceeds without a noticeable change in the activity with time. IR spectroscopy showed that the palladium metal surface fragments forming CO complexes with a characteristic absorption band at 1998 cm–1 are resistant to poisoning with sulfur-containing compounds in the hydrogenation of aromatic hydrocarbons.
Key wordshydrogenation aromatic compounds sulfiding thiophene palladium
Unable to display preview. Download preview PDF.
- 9.V. I. Isaeva, L. M. Kustov, Petroleum Chem. (Engl. Transl.), 2010, 50, No. 3, 167 [Neftekhimiya, 2010, 50, 179].Google Scholar
- 13.H. Bergem, A. Holmen, E. A. Blekkan, EUROPACAT, Maastricht, 3—8 Sept., 1995, 779.Google Scholar
- 14.US Pat. 4,777,308; http://www.findpatent.ru/patent/229/2296618.html.Google Scholar
- 15.US Pat. 3,637,878; http://www.google.com/patent/US3637878.Google Scholar
- 16.N. S. Figoli, J. Chem. Technol. Biotechnol., 1990, 48, 361.Google Scholar
- 20.A. A. Davydov, IK spektroskopiya v khimii poverkhnostnykh okislov [IR Spectroscopy in the Chemistry of Surface Oxides], Novosibirsk, Nauka, 1984, 246 pp. (in Russian).Google Scholar