Léa Gonçalves, Olinda Gimello, Karim Bouchmella, Peter Hesemann and Johan G. Alauzun
{"title":"Titanium dioxide functionalized silicon carbide phases as heterogeneous epoxidation catalysts†","authors":"Léa Gonçalves, Olinda Gimello, Karim Bouchmella, Peter Hesemann and Johan G. Alauzun","doi":"10.1039/D4NA00575A","DOIUrl":null,"url":null,"abstract":"<p >We report silicon carbide (SiC) based epoxidation catalysts constituted of a silicon carbide core and a silica/titania (SiO<small><sub>2</sub></small>/TiO<small><sub>2</sub></small>) shell. The catalysts were obtained <em>via</em> surface modification of SiC microparticles and were used as heterogeneous catalysts for the epoxidation of cyclohexene using <em>tert</em>-butyl hydroperoxide or cumyl hydroperoxide as the oxidant. Conversions up to 83% and selectivities of more than 90% were obtained.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 24","pages":" 6358-6364"},"PeriodicalIF":4.6000,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11520354/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nanoscale Advances","FirstCategoryId":"88","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2024/na/d4na00575a","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
We report silicon carbide (SiC) based epoxidation catalysts constituted of a silicon carbide core and a silica/titania (SiO2/TiO2) shell. The catalysts were obtained via surface modification of SiC microparticles and were used as heterogeneous catalysts for the epoxidation of cyclohexene using tert-butyl hydroperoxide or cumyl hydroperoxide as the oxidant. Conversions up to 83% and selectivities of more than 90% were obtained.