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Non-selective oxidation of ZrAl3 ZrAl3的非选择性氧化
Journal of The Less Common Metals
Pub Date : 1991-10-01 DOI: 10.1016/0022-5088(91)90014-U
M. Paljević
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引用次数: 11
SrHgO2: Ein oxomercurat mit delafossitstruktur 弓状x光片
Journal of The Less Common Metals
Pub Date : 1991-10-01 DOI: 10.1016/0022-5088(91)90015-V
M. Soll, H. Müller-Buschbaum
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引用次数: 13
The structures of binary compounds, (Cohesion and Structure, vol. 2) 二元化合物的结构，(衔接与结构，第2卷)
Journal of The Less Common Metals
Pub Date : 1991-10-01 DOI: 10.1016/0022-5088(91)90025-Y
H. Luecken Dr. (Professor)
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引用次数: 1
Dimers and chains in lanthanide acetate-chloride hydrates [M(CH3COO)2(H2O)3]Cl (M  Ce-Lu, Y) and [M(CH3COO)(H2O)6]Cl2 · H2O (M  La-Sm): a survey of their synthesis, crystal chemistry and thermal decomposition 醋酸镧-氯化物水合物[M(CH3COO)2(H2O)3]Cl (MCe-Lu, Y)和[M(CH3COO)(H2O)6]Cl2·H2O (MLa-Sm)的二聚体和链:合成、晶体化学和热分解的综述
Journal of The Less Common Metals
Pub Date : 1991-10-01 DOI: 10.1016/0022-5088(91)90016-W
Adalbert Lossin, Gerd Meyer

Two types of lanthanide- acetate-chloride hydrates, [M(CH3COO)(H2O)6]Cl2 · H2O (M  La-Sm) and [M(CH3COO)2(H2O)3]Cl (M  Ce-Lu, Y), are obtained by the reaction of the chloride hydrates MCl3 · xH2O (x = 7, 6) and the oxychlorides MOCl respectively with and in acetic acid (solution). The first compound type contains cationic dimers o∞{[M(CH3COO)(H2O)6]2}4+ and is therefore called “type 0” (0 for zero dimensional). The characteristic structural feature of the latter is a cationic chain 1∞[M(CH3COO)2(H2O)3]+; it is a “type 1” compound (1 for one dimensional). All compounds were characterized by X-ray powder diffraction (Guinier method) and their thermal behaviour was investigated by thermal analysis.

镧系元素醋酸盐氯化物水合物[M（CH3COO）（H2O）6]Cl2·H2O（M La Sm）和[M（CH3COO）2（H2O）3]Cl（M Ce-Lu，Y）是由氯化物水合物MCl3·xH2O（x=7,6）和氯氧化物MOCl分别与乙酸（溶液）和在乙酸（溶液中）反应得到的。第一种化合物类型包含阳离子二聚体o∞{[M（CH3COO）（H2O）6]2}4+，因此被称为“0型”（0表示零维）。后者的特征结构特征是阳离子链1∞[M（CH3COO）2（H2O）3]+；它是一种“1型”化合物（1表示一维）。通过X射线粉末衍射（Guinier法）对所有化合物进行了表征，并通过热分析研究了它们的热行为。
{"title":"Dimers and chains in lanthanide acetate-chloride hydrates [M(CH3COO)2(H2O)3]Cl (M  Ce-Lu, Y) and [M(CH3COO)(H2O)6]Cl2 · H2O (M  La-Sm): a survey of their synthesis, crystal chemistry and thermal decomposition","authors":"Adalbert Lossin,&nbsp;Gerd Meyer","doi":"10.1016/0022-5088(91)90016-W","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90016-W","url":null,"abstract":"<div><p>Two types of lanthanide- acetate-chloride hydrates, [M(CH<sub>3</sub>COO)(H<sub>2</sub>O)<sub>6</sub>]Cl<sub>2</sub> · H<sub>2</sub>O (M  La-Sm) and [M(CH<sub>3</sub>COO)<sub>2</sub>(H<sub>2</sub>O)<sub>3</sub>]Cl (M  Ce-Lu, Y), are obtained by the reaction of the chloride hydrates <em>MCl</em><sub>3</sub> · <em>xH</em><sub>2</sub><em>O</em> (<em>x</em> = 7, 6) and the oxychlorides MOCl respectively with and in acetic acid (solution). The first compound type contains cationic dimers <sup>o</sup><sub>∞</sub>{[M(CH<sub>3</sub>COO)(H<sub>2</sub>O)<sub>6</sub>]<sub>2</sub>}<sup>4+</sup> and is therefore called “type <strong>0</strong>” (<strong>0</strong> for zero dimensional). The characteristic structural feature of the latter is a cationic chain <sup>1</sup><sub>∞</sub>[M(CH<sub>3</sub>COO)<sub>2</sub>(H<sub>2</sub>O)<sub>3</sub>]<sup>+</sup>; it is a “type <strong>1</strong>” compound (<strong>1</strong> for one dimensional). All compounds were characterized by X-ray powder diffraction (Guinier method) and their thermal behaviour was investigated by thermal analysis.</p></div>","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"175 2","pages":"Pages 301-308"},"PeriodicalIF":0.0,"publicationDate":"1991-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-5088(91)90016-W","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71754673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Structure and magnetic properties of the ThMn2-type compounds RFe12−xRex (R Ce-Nd, Sm, Gd−Tm, Lu, Y, Th, U) thmn2型化合物RFe12−xRex (R Ce-Nd, Sm, Gd−Tm, Lu, Y, Th, U)的结构和磁性能
Journal of The Less Common Metals
Pub Date : 1991-10-01 DOI: 10.1016/0022-5088(91)90018-Y
M. Gueramian, K. Yvon, F. Hulliger
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引用次数: 10
The structures of binary compounds, (Cohesion and Structure, vol. 2) 二元化合物的结构，(衔接与结构，第2卷)
Journal of The Less Common Metals
Pub Date : 1991-10-01 DOI: 10.1016/0022-5088(91)90025-Y
H. Luecken
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引用次数: 1
An IR spectroscopic investigation of copper manganite CuxMn3−xO4 (O < x <1) spinels and their oxidation products 铜锰矿CuxMn3−xO4 (O < x <1)尖晶石及其氧化产物的红外光谱研究
Journal of The Less Common Metals
Pub Date : 1991-10-01 DOI: 10.1016/0022-5088(91)90013-T
M. Kharroubi, B. Gillot, R. Legros, R. Metz, A. Vajpei, A. Rousset
{"title":"An IR spectroscopic investigation of copper manganite CuxMn3−xO4 (O < x <1) spinels and their oxidation products","authors":"M. Kharroubi, B. Gillot, R. Legros, R. Metz, A. Vajpei, A. Rousset","doi":"10.1016/0022-5088(91)90013-T","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90013-T","url":null,"abstract":"","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"91 1","pages":"279-287"},"PeriodicalIF":0.0,"publicationDate":"1991-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77433388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
Specific Heat of UOs2 and UOsIr UOs2和UOsIr的比热
Journal of The Less Common Metals
Pub Date : 1991-10-01 DOI: 10.1016/0022-5088(91)90002-L
M Baldus, B Andraka, G.R Stewart

The low temperature specific heats of C-15 structure UOs2 and UOsIR have been measured in order to compare them with the systems NpOs2, a ferromagnet with TCurie = 7.9 K, and NpOsIr, newly discovered to be a spin fluctuation system with a specific heat γ of 375 mJ mol−1 K−2. The uranium compounds, with U—U separations of 3.25 Å, less than the Hill limit of 3.4 Å, show normal metallic behavior, with γ(UOs2) = 20 ± 2 mJ mol−1K−2 and γ(UOsIr) = 33 ± 3 mJ mol−1 K−2.

测量了C-15结构UOs2和UOsIR的低温比热，以将其与新发现的比热γ为375 mJ mol−1 K−2的系统NpOs2（TCurie=7.9 K的铁磁体）和NpOsIr（自旋涨落系统）进行比较。铀化合物的U-U分离度为3.25Å，小于3.4Å的Hill极限，表现出正常的金属行为，γ（UOs2）=20±2 mJ mol−1K−2，γ（UOsIr）=33±3 mJ mol–1 K−2。
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引用次数: 0
Non-selective oxidation of ZrAl3 ZrAl3的非选择性氧化
Journal of The Less Common Metals
Pub Date : 1991-10-01 DOI: 10.1016/0022-5088(91)90014-U
M. Paljević

The oxidation of ZrAl3 in dry oxygen in the temperature range 865–1073 K obeys a logarithmic rate law in the first period of reaction. An activation energy of 214 kJ mol−1 has been estimated. Some time after this first period, depending on the temperature, the protective oxide film transforms to a porous one and the reaction rate increases. The oxide layer consists of α-Al2O3, tetragonal ZrO2 and small amounts of monoclinic ZrO2, in contrast to the ZrO2 oxide layer formed during oxidation of other phases in the Zr-Al system, where the selective oxidation of zirconium takes place.

在865–1073K的温度范围内，ZrAl3在干氧中的氧化在反应的第一阶段遵循对数速率定律。估计活化能为214 kJ mol−1。在第一段时间后的一段时间内，根据温度的不同，保护性氧化膜转变为多孔氧化膜，反应速率增加。氧化层由α-Al2O3、四方ZrO2和少量单斜ZrO2组成，与Zr-Al系统中其他相氧化过程中形成的ZrO2氧化层不同，在Zr-Al体系中，锆发生选择性氧化。
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引用次数: 11
Kinetic study of the hafnium-hydrogen reaction 铪-氢反应动力学研究
Journal of The Less Common Metals
Pub Date : 1991-10-01 DOI: 10.1016/0022-5088(91)90007-Q
Y. Levitin, J. Bloch, M. Mintz
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引用次数: 9
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