Selective Hydrogenation of the C≡C to С=С Bond on Fe-Containing Catalysts


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Abstract

Supported monometallic Fe/SiO2 and bimetallic Fe–Cu/SiO2 catalysts were synthesized by incipient wetness impregnation. The synthesized catalytic systems were studied in selective hydrogenation of phenyl-acetylene with molecular hydrogen under mild reaction conditions (H2 pressure 1.3 MPa, 80–110°C). The catalytic properties of monometallic samples depend on the conditions of thermal treatment. The best results on the selectivity of styrene formation (78%) at complete conversion of phenylacetylene were obtained on the reduced sample, in which iron was in the metal state. The modification of the iron oxide phase with copper (0.4 wt %) makes it possible to exclude the stage of reduction of FeOx to Fe0 in hydrogen at high temperatures and to retain high catalytic activity and attain styrene selectivity of 78%.

About the authors

A. A. Shesterkina

Zelinskii Institute of Organic Chemistry, Russian Academy of Sciences

Author for correspondence.
Email: anastasiia.strelkova@mail.ru
Russian Federation, Moscow, 119991

E. V. Shuvalova

Zelinskii Institute of Organic Chemistry, Russian Academy of Sciences

Email: anastasiia.strelkova@mail.ru
Russian Federation, Moscow, 119991

O. A. Kirichenko

Zelinskii Institute of Organic Chemistry, Russian Academy of Sciences; Lomonosov Moscow State University of Fine Chemical Technologies (MITHT)

Email: anastasiia.strelkova@mail.ru
Russian Federation, Moscow, 119991; Moscow, 119454

L. M. Kustov

Zelinskii Institute of Organic Chemistry, Russian Academy of Sciences; Department of Chemistry, Moscow State University

Email: anastasiia.strelkova@mail.ru
Russian Federation, Moscow, 119991; Moscow, 119991

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