Factors determining the chemoselectivity of phosphorus-modified palladium catalysts in the hydrogenation of chloronitrobenzenes


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The precursor nature effect on the state of the Pd–P surface layer in palladium catalysts and on their properties in the liquid-phase hydrogenation of chloronitrobenzenes under mild conditions has been investigated. A general feature of the Pd–P-containing nanoparticles obtained from different precursors and white phosphorus at P/Pd = 0.3 (PdCl2 precursor) and 0.7 (Pd(acac)2 precursor) is that their surface contains palladium in phosphide form (BE(Pd3d5/2) = 336.2 eV and BE(Р2р) = 128.9 eV) and Pd(0) clusters (BE(Pd3d5/2) = 335.7 eV). Factors having an effect on the chemoselectivity of the palladium catalysts in chloronitrobenzenes hydrogenation are considered, including the formation of small palladium clusters responsible for hydrogenation under mild conditions.

作者简介

N. Skripov

Irkutsk State University

Email: belykh@chem.isu.ru
俄罗斯联邦, Irkutsk, 664003

L. Belykh

Irkutsk State University

编辑信件的主要联系方式.
Email: belykh@chem.isu.ru
俄罗斯联邦, Irkutsk, 664003

T. Sterenchuk

Irkutsk State University

Email: belykh@chem.isu.ru
俄罗斯联邦, Irkutsk, 664003

V. Akimov

Vinogradov Institute of Geochemistry, Siberian Branch

Email: belykh@chem.isu.ru
俄罗斯联邦, Irkutsk, 664033

V. Tauson

Vinogradov Institute of Geochemistry, Siberian Branch

Email: belykh@chem.isu.ru
俄罗斯联邦, Irkutsk, 664033

F. Schmidt

Irkutsk State University

Email: belykh@chem.isu.ru
俄罗斯联邦, Irkutsk, 664003

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