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Selective hydrogenation of styrene: Poisoning effect of thiophene
Author(s) -
L'Argentiere Pablo C.,
Fígoli Nora S.
Publication year - 1987
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.280380307
Subject(s) - thiophene , ethylbenzene , styrene , catalysis , x ray photoelectron spectroscopy , catalytic hydrogenation , chemistry , catalyst poisoning , spectroscopy , photochemistry , materials science , organic chemistry , copolymer , catalyst support , chemical engineering , polymer , physics , engineering , quantum mechanics
The poisoning effect of thiophene on a commercial selective hydrogenation Pd/Al 2 O 3 catalyst, using the styrene hydrogenation to ethylbenzene as a test reaction, has been studied. It was found that the addition of thiophene to the reactants modifies the electronic properties of Pd and also prevents (within certain limits) the catalyst from a subsequent poisoning when a second amount of thiophene is added. These modifications on Pd electronic state have been followed by X‐ray photoelectron spectroscopy, and the poison addition has been studied by IR spectroscopy.