Albina A. Valeeva , Evgeny Yu. Gerasimov , Olga G. Reznitskikh
{"title":"Effect of particle size of titanium oxide β-Ti3O5 on its thermal stability","authors":"Albina A. Valeeva , Evgeny Yu. Gerasimov , Olga G. Reznitskikh","doi":"10.1016/j.mencom.2024.06.043","DOIUrl":null,"url":null,"abstract":"<div><p>It was established that the particle size of titanium oxide β-Ti<sub>3</sub>O<sub>5</sub> has a great influence on the processes of phase formation and the stability of particles during heating. It was shown that at a temperature of about 456 K, β-Ti<sub>3</sub>O<sub>5</sub> micro crystals undergo a reversible first-order phase transition, in which the low- temperature β-Ti<sub>3</sub>O<sub>5</sub> phase is transformed into the high-temperature λ- Ti<sub>3</sub>O<sub>5</sub> phase, and at higher temperatures the β-Ti<sub>3</sub>O<sub>5</sub> phase is partially oxidized to form the Magnéli phase Ti<sub>4</sub>O<sub>7</sub>. It was found that β-Ti<sub>3</sub>O<sub>5</sub> nanocrystals are unstable in an argon atmosphere and at temperatures above 400 K the β-Ti<sub>3</sub>O<sub>5</sub> powder is oxidized.</p></div>","PeriodicalId":18542,"journal":{"name":"Mendeleev Communications","volume":"34 4","pages":"Pages 601-603"},"PeriodicalIF":1.8000,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Mendeleev Communications","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0959943624002207","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
It was established that the particle size of titanium oxide β-Ti3O5 has a great influence on the processes of phase formation and the stability of particles during heating. It was shown that at a temperature of about 456 K, β-Ti3O5 micro crystals undergo a reversible first-order phase transition, in which the low- temperature β-Ti3O5 phase is transformed into the high-temperature λ- Ti3O5 phase, and at higher temperatures the β-Ti3O5 phase is partially oxidized to form the Magnéli phase Ti4O7. It was found that β-Ti3O5 nanocrystals are unstable in an argon atmosphere and at temperatures above 400 K the β-Ti3O5 powder is oxidized.
期刊介绍:
Mendeleev Communications is the journal of the Russian Academy of Sciences, launched jointly by the Academy of Sciences of the USSR and the Royal Society of Chemistry (United Kingdom) in 1991. Starting from 1st January 2007, Elsevier is the new publishing partner of Mendeleev Communications.
Mendeleev Communications publishes short communications in chemistry. The journal primarily features papers from the Russian Federation and the other states of the former USSR. However, it also includes papers by authors from other parts of the world. Mendeleev Communications is not a translated journal, but instead is published directly in English. The International Editorial Board is composed of eminent scientists who provide advice on refereeing policy.