The adsorption of the linear C4 olefins (1-butene, cis-2-butene and trans-2-butene) and of 1,3-butadiene on MgFe2O4, and the evolution of the surface and gas-phase species upon heating has been followed by FT-IR spectroscopy. For comparison, the behavior of several C4 oxygenates has also been investigated. It has been found that the three linear butenes give rise by interaction with the oxidized catalyst sites to but-3-en-2-oxide species that later decompose to butadiene. The main pathway giving rise to total oxidation likely goes through but-2-en-3-one that breaks to give different carboxylate species. © 1997 Elsevier Science B.V. All rights reserved.
On the mechanism of the selective oxy-dehydrogenation of n-butenes to 1,3-butadiene on magnesium ferrite: An FT-IR study
FINOCCHIO, ELISABETTA;BUSCA, GUIDO;RAMIS, GIANGUIDO;
1997-01-01
Abstract
The adsorption of the linear C4 olefins (1-butene, cis-2-butene and trans-2-butene) and of 1,3-butadiene on MgFe2O4, and the evolution of the surface and gas-phase species upon heating has been followed by FT-IR spectroscopy. For comparison, the behavior of several C4 oxygenates has also been investigated. It has been found that the three linear butenes give rise by interaction with the oxidized catalyst sites to but-3-en-2-oxide species that later decompose to butadiene. The main pathway giving rise to total oxidation likely goes through but-2-en-3-one that breaks to give different carboxylate species. © 1997 Elsevier Science B.V. All rights reserved.
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