The Use of Isotopic Exchange in Molecular Hydrogen to Study the Physicochemical Properties of Bimetallic Nanoparticles

The catalytic and adsorption properties of supported mono- and bimetallic nanoparticles of the copper–silver and copper–gold systems were studied. The particle sizes were 5–9 nm. The catalytic properties of the samples were studied at 77 K in deuterium–hydrogen exchange reactions and ortho- to- para...

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Bibliographic Details
Published in:Russian Journal of Physical Chemistry A 2024-12, Vol.98 (12), p.2888-2890
Main Authors: Pshenitsyn, M. B., Boeva, O. A.
Format: Article
Language:English
Subjects:
Bimetals
Catalytic converters
Chemistry
Chemistry and Materials Science
Copper
Copper converters
Deuterium
Electronegativity
Exchanging
Gold
Hydrogen
Light water
Magnetic properties
Nanoparticles
Physical and Chemical Processes in Atomic Systems
Physical Chemistry
Silver
Synergistic effect
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Summary:The catalytic and adsorption properties of supported mono- and bimetallic nanoparticles of the copper–silver and copper–gold systems were studied. The particle sizes were 5–9 nm. The catalytic properties of the samples were studied at 77 K in deuterium–hydrogen exchange reactions and ortho- to- para conversion of protium. A comparison of the obtained data on the catalytic properties of the samples in isotope exchange reactions in molecular hydrogen and ortho- to -para conversion of protium showed that the mono- and bimetallic nanoparticles of the systems have magnetic properties. A comparison of the activities of the mono- and bimetallic systems in the deuterium–hydrogen exchange reaction revealed a more significant synergistic effect for the copper–gold system relative to the copper–silver system, which is explained by the greater difference between the electronegativities of atoms in the systems.
ISSN:0036-0244
1531-863X
DOI:10.1134/S0036024424702170