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为了研究K＋、Al3＋对Zn－Co－O尖晶石催化性能的影响，用Rietveld分析法测定了由共沉淀法制备的Zn－Co－O体系的结构，并考察添加K＋、Al3＋对该体系结构的影响．结果表明，该体系均由（CoZn）O固溶体ZnCo2O4尖晶石二相以及部分非晶态组成，添加K＋、Al3＋能使尖晶石相含量增加，对氧参数的影响呈相反趋势，氧参数大小规律与氧的活动性大小相对应．
A2BO4型复合氧化物Dy0.5Sr1.5Mn1-xNixO4(0<=x<=1)的Rietveld分析和CO氧化催化活性
氧化 一氧化碳 Ｘ射线衍射分析 氧化锰 氧化镍 复氧化物 氧化锶 化学计量学 催化活性 氧化镝 浙江省自然科学基金
2007/12/19
摘要 X射线衍射Rietveld分析和微反分析表明, A位含Dy的A2BO4型过渡金属稀土复合氧化物Dy0.5Sr1.5Mn1-xNixO4(0<=x1.0。x=0.2的样品, 在空速5000h^-^1, 463K时, CO转化率达80%。
氧化锆粉体的Rietveld方法X射线衍射定量分析
2007/7/28
期刊信息
篇名
氧化锆粉体的Rietveld方法X射线衍射定量分析
语种
中文
撰写或编译
撰写
作者
王佩玲,贾迎新,王大志,罗毅
第一作者单位
刊物名称
无机材料学报
页面
12 (1997)551-55
出版日期
1997年
月
日
文章标识(ISSN)
相关项目
Rietveld方法用于ZrO2相丰度的定量分析研究
Microstructure Characterization of ZnFe2-xMxO4 (M = Bi, Y and x = 0.1, 0.2) Ferrites by the Rietveld Refinement
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The microstructure of the ferrites was analyzed by the Reitveld refinement method. The Bi-containing ferrites revealed a decrease in the lattice parameter as the Bi3+ concentration is increased, due t...
Refinement of Monoclinic ReO2 Structure from XRD by Rietveld Method
Monoclinic ReO2 Structure XRD Rietveld Method
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ReO2 presents two crystalline variants, with monoclinic and orthorhombic structures. The former is metastable and irreversibly transforms to an orthorhombic structure above 460oC. The structure of the...
Rietveld refinement of the crystallographic structure of human dental enamel apatites
Rietveld refinement crystallographic structure human dental enamel apatites
2012/4/1
Rietveld refinements using 12 sets of X-ray diffraction powder data from milligram samples of
human dental enamel provide detailed information about the structure and composition of enamel
apatite. ...
High-resolution synchrotron X-ray powder diffraction and Rietveld structure refinement of two (Mg0.95,Fe0.05)SiO3 perovskite samples synthesized under different oxygen fugacity conditions
high-resolution synchrotron X-ray powder diffraction
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Thispaperpresentshigh-resolutionsynchrotronX-raypowderdiffractiondataat290K
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Fe )SiO synthesizedat25GPaand1920Kinamulti-a...
Structure Refinement of Synthetic Deuterated Kaolinite by Rietveld Analysis Using Time-of-Flight Neutron Powder Diffraction Data
Crystal Structure Kaolinite Neutron Powder Diffraction Rietveld Refinement Synthetic Kaolinite
2011/12/22
Abstract: The crystal structure of synthetic deuterated kaolinite was refined by Rietveld analysis using time-of-flight (TOF) neutron powder diffraction data. For non-hydrogen atoms, C1 symmetry was a...
A Rietveld and infrared study of synthetic amphiboles along the potassium-richterite-tremolite join
Rietveld infrared study synthetic amphiboles potassium-richterite-tremolite join
2012/4/5
Amphibolesweresynthesizedat750 C,1kbar(H O)forcompositionsat20%intervalsalongthejoinpotassium-richterite¤Ctremolite.Structuralvariations,siteoccupancies,an
modalanalysesoftheexperimentalproducts(amph...
Thestructureofthehigh-pressurecubicdoubleperovskiteCa TiSiO wasre?nedusingsynchrotronX-raypowderdata[S.G. Fm3m,a 7.4105(1)A, Z 4].TiandSiarefullyorderedintoalternatingoctahedraintheperovskiteframework...
Site occupancies in synthetic monoclinic amphiboles: Rietveld structure refinement and infrared spectroscopy of (nickel, magnesium, cobalt)-richterite
Site occupancies synthetic monoclinic amphiboles Rietveld structure refinement infrared spectroscopy nickel magnesium cobalt richterite
2012/4/5
Amphibolesweresynthesizedat750C,1kbar(H O)onthebinaryjoins(nickel,
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cupancieswerecharacterizedbyRietveldstructurer...
Rietveld方法的R.A.Young程序的改进及其在矿物学中的应用
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Quantitative analysis of alkali feldspar minerals using Rietveld refinement of X-ray diffraction data
Quantitative analysis alkali feldspar minerals X-ray diffraction data
2012/4/6
Microcline +albite and albite + quartz standard mixtures werequantitatively analyzed using Rietveld refinement to investigate the reliability of the method. The method was also applied to the determin...
Hydrogen positions and thermal expansion in lizardite-1T from Elba: A low-temperature study using Rietveld refinement of neutron diffraction data
Hydrogen positions thermal expansion lizardite-1T Elba low-temperature study neutron diffraction data
2012/4/6
Thestructure oflizardite-l Tfrom MonteFico,Elba,wasrefined in spacegroupP31m usingneutron diffractiondata, measuredat 8, 150,and 294K,and full-profile Rietveld
refinement techniques. Thelattice param...
Mn crystal chemistry in pumpellyite: A resonant scattering powder diffraction Rietveld study using synchrotron radiation
Mn crystal chemistry pumpellyite scattering powder diffraction synchrotron radiation
2012/4/5
The present study attempts to clarify the structural role of Mnin two pumpellyite specimens with the chemical formulas Ca7.so(Als.91Mn1.85Mg1.16Feo.37)Sill.s40s6-xOHx and Cas.12(AI7.99Mn3.41Mgo.71Feo....