| XAFS STUDIES OF IRON CATALYSTS FOR F-T SYNTHESIS |
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| 作者姓名： | LIU Zhao-Tiel |
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| 作者单位： | LIU Zhao-Tiel(Key Laboratory of Natural Gas Chemistry，Chengdu Institute of Organic ChemistryThe Chinese Academy of SciencesChengdu，Sichuan 610041 |
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| 摘 要： | IntroductionX-rnyabsorptionfinestructure(XAFS)spectroscopeprovidesauniqucopportunitytodetermincthcstructureofnanophasesystemswithshort-rangeorder,suchascatalystslllAnalysisofthcextendedpartofX-rayabsorptionfincstructure(EXAFS)providesthcinformationaboutthcidcntity,intefatomicdistanccs,andcoordinationnumbcrofatomsintheneghboringatomicshellssurroundingthccentralabsorbingatomFortransitionmetalcompondswithincompletelyfilleddshellthesamepre-edgepcaksintheX-rayabsorptionncar-edgestructure(XANE…
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XAFS STUDIES OF IRON CATALYSTS FOR F-T SYNTHESIS |
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| LIU Zhao-Tiel.XAFS STUDIES OF IRON CATALYSTS FOR F-T SYNTHESIS[J].Journal of Natural Gas Chemistry,1996,5(3):195-209. |
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| Authors: | Zhaotie Liu Zhengping Zhu Jinglai Zhou Bijiang Zhang |
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| Institution: | Chengdu Institute of Organic Chemistry; Institute of Coal Chemistry |
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| Abstract: | XAFS was used to determine the changes of the neighboringchemical environment of iron catalysts.The coordination numbers of thefirst Fe/Fe shell for sulfur Poisoned catalysts decreased with the increase ofthe concentration of sulfur fed to catalyst. The variation of deactivation rateresulted from different sulfur compounds formed on catalysts The catalystparticle size increased during reaction or Poisoning processes. |
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| Keywords: | XAFS EXAFS XANES iron catalysts FeS FeS_2 |
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