Microstructure evolution and oxidation states of Co in perovskite-type oxide Ba1.0Co0.7Fe0.2Nb0.1O3-γ annealed in CO2 atmosphere-中国Betway体育网页登陆

摘要 Ba1.0Co0.7Fe0.2Nb0.1O3-δ(BCFN)oxidewithperovskitecubicstructurewassynthesizedbysolidstatereactionmethod.CO2corrosionofBCFNmembranewasinvestigatedbyX-raydiffraction(XRD),scanningelectronmicroscopy(SEM),diffusereflectanceinfraredFouriertransformedspectroscopy(DRIFT)andX-rayabsorptionfinestructurespectroscopy(XAFS).Cobalt(Co)K-edgeabsorptionspectraofBCFNannealedinCO2revealthattheoxidationstatesofCoinallthesampleswerelargerthan+3andtheydecreasedwiththeincreaseofcalcinationtime.At800℃,1%CO2introducedintoHecouldspeedupthereductionofCocationsincomparisonwithpureHe.Inaddition,sulfateionsinthebulkofBCFNmembranepreferredtomigratetothesurfaceunderCO2calcinationandformmonoclinicBa(CO3)0.9(SO4)0.1besidesorthorhombicwitherite.Moreover,SEMresultsindicatethatthenucleationandgrowthofcarbonatesgrainsstartedatthegrainboundaryofthemembrane.

1LIU Rui-hui;ZHANG Cun-man;MA Jian-xin.Gold Catalysts Supported on Crystalline Fe2O3 and CeO2/Fe2O3 for Low-temperature CO Oxidation.化学,2010-01.
2Wei-Qing Jiang;Jin Guo;Zheng-Cheng Zhou;Yin-Yan Wei.Hydrogen storage properties of as-cast and annealed low-Co La1.8Ti0.2MgNi8.9Co0.1 alloys.金属材料,2016-07.
3Fangli Yu;Zhenping Qu;Xiaodong Zhang;Qiang Fu;Yi Wang.Investigation of CO and formaldehyde oxidation over mesoporous Ag/Co3O4 catalysts.物理,2013-06.
4Xiaomin Zhang;Yuefeng Song;Guoxiong Wang;Xinhe Bao.Co-electrolysis of CO2 and H2O in high-temperature solid oxide electrolysis cells: Recent advance in cathodes.物理,2017-05.
5Lixiao Zhang;Shiqing Hu;Xuefeng Zhu;Weishen Yang.Electrochemical reduction of CO2 in solid oxide electrolysis cells.物理,2017-04.
6梁贵芳.关于CO还原Fe2O3实验的尾气处理.教育学,2012-05.
7Roshidah RUSDI;Norlida KAMARULZAMAN;Kelimah ELONG;Hashlina RUSDI;Azilah ABD-RAHMAN.Electrochemical performance of overlithiated Li1＋xNi0.8Co0.2O2： structural and oxidation state studies.材料科学与工程,2015-02.
8Ya’nan Yao;Yan Gao;Lu Ye;Hu Chen;Licheng Sun.Highly efficient photocatalytic reduction of CO2 and H2O to CO and H2 with a cobalt bipyridyl complex.物理,2018-02.
9连泽仁.CO2制法问答.教育学,2004-01.
10周春露.CO还原Fe2O3实验的微型化改进.教育学,2012-05.

Microstructure evolution and oxidation states of Co in perovskite-type oxide Ba1.0Co0.7Fe0.2Nb0.1O3-γ annealed in CO2 atmosphere

来源期刊

相关推荐

同分类资源更多

相关关键词