Dual Effect of Carbon and Hydrogen on the Segregation of Pd-Ni Alloy in the Course of Trichloroethylene Decomposition | Sciact - CRIS-system of Boreskov Institute of Catalysis

Dual Effect of Carbon and Hydrogen on the Segregation of Pd-Ni Alloy in the Course of Trichloroethylene Decomposition Full article

Journal

Materials Letters
ISSN: 0167-577X , E-ISSN: 1873-4979

Output data

Year: 2026, Volume: 406, Article number : 139865, Pages count : 3 DOI: 10.1016/j.matlet.2025.139865

Funding (1)

Russian Science Foundation

22-13-00406-П

Pd-Ni alloys were recently found to be effective for the catalytic decomposition of chlorine-substituted organic compounds with the formation of carbon nanofibers. Decomposition of trichloroethylene over a Pd0.80Ni0.20 alloy resulted in the appearance of two types of such nanofibers. It was assumed that at least two kinds of active metal nanoparticles should coexist and catalyze the growth of carbon nanofibers of two types. Therefore, the present research aimed to study the behavior of the initially homogeneous Pd0.80Ni0.20 alloy in the medium containing trichloroethylene and hydrogen. As found, the particles of type I are of 100–300 nm in diameter and enriched with Pd (~90 %). The particles of type II contain ~70 % Ni, and their size is about 10–20 nm. The driving forces of the segregation process appear to be the formation of carbides and hydrides of nickel and palladium, whose stabilities differ.

Potylitsyna A.R. , Bauman Y.I. , Shubin Y.V. , Popov A.A. , Shlyapin D.A. , Mishakov I.V. , Vedyagin A.A.
Dual Effect of Carbon and Hydrogen on the Segregation of Pd-Ni Alloy in the Course of Trichloroethylene Decomposition
Materials Letters. 2026. V.406. 139865 :1-3. DOI: 10.1016/j.matlet.2025.139865

Submitted:	Oct 3, 2025
Accepted:	Nov 24, 2025
Published online:	Nov 25, 2025
Published print:	Mar 1, 2026

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