Selective hydrogenation of 1,3-butadiene in presence of 1-butene under liquid phase conditions with NiPd/Al^sub 2^O3 catalysts

• Published in: Applied petrochemical research Vol. 6; no. 4; p. 379
• Main Authors: Méndez, Franklin J, Solano, Roger, Villasana, Yanet, Guerra, Julia, Curbelo, Susana, Inojosa, Marcel, Olivera-fuentes, Claudio, Brito, Joaquín L
• Format: Journal Article
• Language: English
• Published: Heidelberg Springer Nature B.V 01-04-2016
• Subjects: Ammonia; Hydrogenation; X-ray diffraction
• ISSN: 2190-5525; 2190-5525
• DOI: 10.1007/s13203-016-0149-y

The catalytic performance of Al2O3-supported monometallic and bimetallic catalysts in selective hydrogenation of 1,3-butadiene in the presence of 1-butene under liquid phase conditions was studied. Bimetallic catalysts were prepared by the coimpregnation method with the required amounts of the precursors salts [Ni(NO3) 2·6H2O and Pd(NH3)4Cl2·H2O] over pellet-form γ-Al2O3 with a constant content of Pd (0.5 wt%) and varying Ni/Pd atomic ratio (0.25, 0.5, 0.75, and 1) obtaining egg-shell profiles of the active components. The catalysts were characterized by X-ray diffraction, temperature-programmed techniques, such as reduction in hydrogen and desorption of ammonia, N2 physisorption, and transmission electron microscopy. The catalytic test showed that the 1,3-butadiene was selectively hydrogenated when bimetallic catalysts were used. The addition of Ni to the Pd-based catalysts suppressed n-butane formation and increased recovery of 1-butene at medium conversion. Therefore, it was observed an improved catalytic performance of the bimetallic catalysts being highest in the case of the 1NiPd/Al 2O3.