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Bimetallic Ru/Ni supported catalysts for the gas phase hydrogenation of acetonitrile

Paper ID Volume ID Publish Year Pages File Format Full-Text
42036 45908 2010 13 PDF Available
Title
Bimetallic Ru/Ni supported catalysts for the gas phase hydrogenation of acetonitrile
Abstract

A family of bimetallic Ni-Ru catalysts supported on a mesoporous SBA-15 silica was prepared by conventional impregnation method, with constant metal molar loadings, but varying Ni/(Ni + Ru) atomic ratios. The corresponding Ni and Ru monometallic catalysts were also prepared for comparison. These catalysts were characterized by XRD, N2 adsorption–desorption at −196 °C, TEM, XPS, H2-TPR, chemisorption of H2 at r.t., H2-TPD and NH3-TPD techniques. Finally, they were also tested in the hydrogenation of acetonitrile reaction, in the gas phase and at atmospheric pressure. Acetonitrile conversion values depended on the Ni/(Ni + Ru) composition of the bimetallic catalysts. Ru-rich bimetallic catalysts exhibited acetonitrile conversion values higher than that of pure Ni one; thus, although selectivity patterns remained almost unchanged, primary amine yields were increased. These higher conversion values resulted as a consequence of enhanced specific activity of Ni0 atoms, attributable to a strong interaction between both metals, Ni and Ru, likely because NiRu alloy nanoparticles were formed.

Graphical abstractA family of bimetallic Ni-Ru catalysts supported on a mesoporous SBA-15 as well as the corresponding Ni and Ru monometallic catalysts were tested in the hydrogenation of acetonitrile reaction. Ru-rich bimetallic catalysts exhibited conversion values higher than that of pure Ni one, as a consequence of enhanced specific activity of Ni0 atoms, attributable to a strong interaction between both metals.Figure optionsDownload full-size imageDownload high-quality image (89 K)Download as PowerPoint slide

Keywords
Gas phase acetonitrile hydrogenation; Supported nickel-ruthenium bimetallic catalysts; Mesoporous silica; SBA-15
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Bimetallic Ru/Ni supported catalysts for the gas phase hydrogenation of acetonitrile
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 381, Issues 1–2, 15 June 2010, Pages 132–144
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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