Amino-Modified Silica as Effective Support of the Palladium Catalyst for 4-Nitroaniline Hydrogenation

Federal State Budget Educational Institution of Higher Education «Ivanovo State Polytechnic University», Sheremetevsky ave. 21, 153000 Ivanovo, Russia

Tver State Technical University, Nab. A. Nikitina 22, 170042 Tver, Russia

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Catalysts 2020, 10(4), 375; https://doi.org/10.3390/catal10040375

Received: 4 March 2020 / Revised: 26 March 2020 / Accepted: 29 March 2020 / Published: 31 March 2020

(This article belongs to the Special Issue Catalysis by Silica and Related Materials)

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Abstract

The article describes the synthesis of aminoorgano-functionalized silica as a prospective material for catalysis application. The amino groups have electron donor properties which are valuable for the metal chemical state of palladium. Therefore, the presence of electron donor groups is important for increasing catalysts’ stability. The research is devoted to the investigation of silica amino-modified support influence on the activity and stability of palladium species in 4-nitroaniline hydrogenation process. A series of catalysts with different supports such as SiO₂, SiO₂-C₃H₆-NH₂ (amino-functionalized silica), γ-Al₂O₃ and activated carbon were studied. The catalytic activity was studied in the hydrogenation of 4-nitroaniline to 1,4-phenylenediamine. The catalysts were characterized by scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy and chemisorption of hydrogen by the pulse technique. The 5 wt.% Pd/SiO₂-C₃H₆-NH₂ catalyst exhibited the highest catalytic activity for 4-nitroaniline hydrogenation with 100% conversion and 99% selectivity with respect to 1,4-phenylenediamine. View Full-Text

Keywords: sol-gel; amino-functionalized silica; catalyst; activity; hydrogenation

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MDPI and ACS Style

Latypova, A.R.; Lebedev, M.D.; Rumyantsev, E.V.; Filippov, D.V.; Lefedova, O.V.; Bykov, A.V.; Doluda, V.Y. Amino-Modified Silica as Effective Support of the Palladium Catalyst for 4-Nitroaniline Hydrogenation. Catalysts 2020, 10, 375. https://doi.org/10.3390/catal10040375

AMA Style

Latypova AR, Lebedev MD, Rumyantsev EV, Filippov DV, Lefedova OV, Bykov AV, Doluda VY. Amino-Modified Silica as Effective Support of the Palladium Catalyst for 4-Nitroaniline Hydrogenation. Catalysts. 2020; 10(4):375. https://doi.org/10.3390/catal10040375

Chicago/Turabian Style

Latypova, Adele R., Maxim D. Lebedev, Evgeniy V. Rumyantsev, Dmitry V. Filippov, Olga V. Lefedova, Alexey V. Bykov, and Valentin Y. Doluda. 2020. "Amino-Modified Silica as Effective Support of the Palladium Catalyst for 4-Nitroaniline Hydrogenation" Catalysts 10, no. 4: 375. https://doi.org/10.3390/catal10040375

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Amino-Modified Silica as Effective Support of the Palladium Catalyst for 4-Nitroaniline Hydrogenation

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