@inproceedings{af30d0b50f34451c9a32acdbdf9f90b4,
title = "Partial miscibility of metals as a key for improved properties",
abstract = "Platinum and iridium are known to belong to a family of partly miscible metals. On the other hand, these metals are high demanded as active components of the catalysts for a variety of industrially important processes. In the present work, a series of bimetallic Pt-Ir catalysts supported on alumina were prepared using a “single source precursor” concept. The ratio of metals in the alloy was varied from 1:3 to 3:1. The thermal stability and catalytic activity in CO oxidation of the samples were studied in a prompt thermal aging regime. Monometallic Pt/γ-Al2O3 and Ir/γ-Al2O3 samples were used as references. All the studied catalysts were characterized by UV-vis spectroscopy in initial state and after the aging treatment. It was found that the bimetallic nanoparticles being subjected to the high temperature aging at 600 and 800 ℃undergo redistribution with further stabilization in a noticeably more active state. The observed increase in the catalytic activity is explained by an enrichment of the particles{\textquoteright} surface with platinum.",
keywords = "Alumina-supported catalysts, CO oxidation, Partly miscible metals, Pt-Ir nanoalloy, Thermal stability",
author = "Vedyagin, {Aleksey A.} and Plyusnin, {Pavel E.} and Kenzhin, {Roman M.} and Stoyanovskii, {Vladimir O.} and Zadesenets, {Andrey V.} and Shubin, {Yury V.}",
year = "2020",
month = jan,
day = "1",
doi = "10.4028/www.scientific.net/MSF.998.151",
language = "English",
isbn = "9783035716061",
series = "Materials Science Forum",
publisher = "Trans Tech Publications Ltd",
pages = "151--156",
editor = "Agarwal, {Ramesh K.}",
booktitle = "Material Science and Engineering Technology VIII",
note = "8th International Conference on Material Science and Engineering Technology, ICMSET 2019 ; Conference date: 19-10-2019 Through 21-10-2019",
}