A.W. Morawski, K. Kałucki, A. Proń, Z. Kucharski, M. Łukasiak, J. Suwalski
{"title":"Mössbauer由石墨插层化合物衍生的铁石墨催化剂的光谱研究","authors":"A.W. Morawski, K. Kałucki, A. Proń, Z. Kucharski, M. Łukasiak, J. Suwalski","doi":"10.1016/0168-7336(89)80036-1","DOIUrl":null,"url":null,"abstract":"<div><p>Very active catalysts can be prepared from FeCl<sub>3</sub>-GIC precursors through a two-step reduction and washing with HCl. Mössbauer spectrometry during the first (H<sub>2</sub>) reduction step indicates that Fe<sup>0</sup> in the form of α-Fe is obtained together with two non-equivalent Fe<sup>II</sup> sites. This α-Fe is catalytically inactive and can be readily removed from the system treatment with HCl. The second reduction with potassium vapour transforms the remaining Fe<sup>II</sup> into catalytically active Fe<sup>0</sup> which is strongly resistant to the HCl treatment.</p></div>","PeriodicalId":101061,"journal":{"name":"Reactivity of Solids","volume":"7 3","pages":"Pages 199-205"},"PeriodicalIF":0.0000,"publicationDate":"1989-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0168-7336(89)80036-1","citationCount":"3","resultStr":"{\"title\":\"Mössbauer spectroscopy studies of iron-graphite catalysts derived from graphite intercalation compounds\",\"authors\":\"A.W. Morawski, K. Kałucki, A. Proń, Z. Kucharski, M. Łukasiak, J. Suwalski\",\"doi\":\"10.1016/0168-7336(89)80036-1\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Very active catalysts can be prepared from FeCl<sub>3</sub>-GIC precursors through a two-step reduction and washing with HCl. Mössbauer spectrometry during the first (H<sub>2</sub>) reduction step indicates that Fe<sup>0</sup> in the form of α-Fe is obtained together with two non-equivalent Fe<sup>II</sup> sites. This α-Fe is catalytically inactive and can be readily removed from the system treatment with HCl. The second reduction with potassium vapour transforms the remaining Fe<sup>II</sup> into catalytically active Fe<sup>0</sup> which is strongly resistant to the HCl treatment.</p></div>\",\"PeriodicalId\":101061,\"journal\":{\"name\":\"Reactivity of Solids\",\"volume\":\"7 3\",\"pages\":\"Pages 199-205\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1989-08-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0168-7336(89)80036-1\",\"citationCount\":\"3\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Reactivity of Solids\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0168733689800361\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Reactivity of Solids","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0168733689800361","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Mössbauer spectroscopy studies of iron-graphite catalysts derived from graphite intercalation compounds
Very active catalysts can be prepared from FeCl3-GIC precursors through a two-step reduction and washing with HCl. Mössbauer spectrometry during the first (H2) reduction step indicates that Fe0 in the form of α-Fe is obtained together with two non-equivalent FeII sites. This α-Fe is catalytically inactive and can be readily removed from the system treatment with HCl. The second reduction with potassium vapour transforms the remaining FeII into catalytically active Fe0 which is strongly resistant to the HCl treatment.
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