{"title":"The Use of Isotopic Exchange in Molecular Hydrogen to Study the Physicochemical Properties of Bimetallic Nanoparticles","authors":"M. B. Pshenitsyn, O. A. Boeva","doi":"10.1134/S0036024424702170","DOIUrl":null,"url":null,"abstract":"<p>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 <i>ortho-</i>to-<i>para</i> conversion of protium. A comparison of the obtained data on the catalytic properties of the samples in isotope exchange reactions in molecular hydrogen and <i>ortho-</i>to<i>-para</i> 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.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"98 12","pages":"2888 - 2890"},"PeriodicalIF":0.7000,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Journal of Physical Chemistry A","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1134/S0036024424702170","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
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.
期刊介绍：
Russian Journal of Physical Chemistry A. Focus on Chemistry (Zhurnal Fizicheskoi Khimii), founded in 1930, offers a comprehensive review of theoretical and experimental research from the Russian Academy of Sciences, leading research and academic centers from Russia and from all over the world.
Articles are devoted to chemical thermodynamics and thermochemistry, biophysical chemistry, photochemistry and magnetochemistry, materials structure, quantum chemistry, physical chemistry of nanomaterials and solutions, surface phenomena and adsorption, and methods and techniques of physicochemical studies.
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