Hydrogenation of aromatic hydrocarbons in a mixture with thiophene on sulfided Pd/Al2O3 catalysts

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-A 2 O 3 with aqueous solutions of salts of palladium complexes. Preliminary sulfiding followed by oxidative act...

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Bibliographic Details
Published inRussian chemical bulletin Vol. 64; no. 12; pp. 2786 - 2790
Main Authors Tarasov, A. L., Malova, O. V., Lishchiner, I. I.
Format Journal Article
LanguageEnglish
Published New York Springer US 01.12.2015
Subjects
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Full Articles
Inorganic Chemistry
Organic Chemistry
aromatic compounds
palladium
thiophene
hydrogenation
sulfiding
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Summary: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-A 2 O 3 with aqueous solutions of salts of palladium complexes. Preliminary sulfiding followed by oxidative activation of Pd/Al 2 O 3 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.
ISSN:1066-5285
1573-9171
DOI:10.1007/s11172-015-1226-6