Effect of the reduction conditions of the supported palladium precursor on the activity of Pd/C catalysts in hydrogenation of sodium 2,4,6-trinitrobenzoate


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The study addresses the effect of the reduction conditions of palladium polynuclear hydroxo complexes (PHC) supported on the Sibunit carbon material on the dispersion of the metal particles and the activity of 0.5%Pd/Sibunit catalysts in the selective hydrogenation of sodium 2,4,6-trinitrobenzoate to 1,3,5-triaminobenzene in an aqueous solution (temperature of 323 or 343 K, pressure of 0.5 MPa). The palladium PHC were reduced using the most common methods pertaining to catalyst preparation: liquid-phase reduction with sodium formate and reduction in a hydrogen flow at elevated temperature. It was found that high-temperature reduction in the gas phase gives rise to Pd particles with a markedly lower dispersion compared with the sample obtained under mild liquid-phase reduction conditions. The catalytic activity of the sample containing large Pd particles proved to be higher than the activity of the catalyst obtained by reduction with sodium formate.

作者简介

O. Belskaya

Institute of Hydrocarbons Processing, Siberian Branch of the Russian Academy of Sciences; Omsk State Technical University

Email: ch-mrm@mail.ru
俄罗斯联邦, 54 ul. Neftezavodskaya, Omsk, 644040; 11 prosp. Mira, Omsk, 644050

R. Mironenko

Institute of Hydrocarbons Processing, Siberian Branch of the Russian Academy of Sciences; F. M. Dostoevsky Omsk State University

编辑信件的主要联系方式.
Email: ch-mrm@mail.ru
俄罗斯联邦, 54 ul. Neftezavodskaya, Omsk, 644040; 55a prosp. Mira, Omsk, 644077

T. Gulyaeva

Institute of Hydrocarbons Processing, Siberian Branch of the Russian Academy of Sciences

Email: ch-mrm@mail.ru
俄罗斯联邦, 54 ul. Neftezavodskaya, Omsk, 644040

M. Trenikhin

Institute of Hydrocarbons Processing, Siberian Branch of the Russian Academy of Sciences; Omsk State Technical University; Omsk Scientific Center, Siberian Branch of the Russian Academy of Sciences

Email: ch-mrm@mail.ru
俄罗斯联邦, 54 ul. Neftezavodskaya, Omsk, 644040; 11 prosp. Mira, Omsk, 644050; 15 prosp. Karla Marksa, Omsk, 644024

V. Likholobov

Institute of Hydrocarbons Processing, Siberian Branch of the Russian Academy of Sciences; Omsk State Technical University; Omsk Scientific Center, Siberian Branch of the Russian Academy of Sciences

Email: ch-mrm@mail.ru
俄罗斯联邦, 54 ul. Neftezavodskaya, Omsk, 644040; 11 prosp. Mira, Omsk, 644050; 15 prosp. Karla Marksa, Omsk, 644024

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