Solid State Reactions between Rare Earth Orthophosphate and Oxide
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چکیده
منابع مشابه
Phase Equilibria in Systems Involving the Rare - Earth Oxides . Part II . Solid State Reactions in Trivalent Rare - Earth Oxide Systems
Selected mixtures in 2 l binary and 9 ternary rare-earth oxide syste ms were studied by X-ray diffraction after heat treatment aL 1,650° C and above. Two graphs were drawn to show specific r egions of stability for t he various strucLure types. Each givcs t he a verage ionic rad ius of constiLuent cations versus the mole percent of the smaller cation. One diagram is es~e ntiall :-' divided inLo...
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S. BERTAINA, S. GAMBARELLI, A. TKACHUK, I. N. KURKIN, B. MALKIN, A. STEPANOV AND B. BARBARA* Institut Néel, Département Nanosciences, CNRS, 25 Ave. des Martyrs, BP166, 38042 Grenoble Cedex 9, France Ecole Nationale Supérieure de Physique, INP de Grenoble, Minatec 3 parvis Louis Néel, BP 257, 38016 Grenoble Cedex 9, France Laboratoire de Chimie Inorganique et Biologie (UMR-E 3 CEA-UJF), DRFMC, C...
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Several of the fourteen rare-earth element (plus Sc and Y) orthophosphate standards grown at Oak Ridge National Laboratory in the 1980s and widely distributed by the Smithsonian Institution's Department of Mineral Sciences, are significantly contaminated by Pb. The origin of this impurity is the Pb2P2O7 flux that is derived from the thermal decomposition of PbHPO4. The lead pyrophosphate flux i...
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Rare-earth (RE) oxide surfaces are of significant importance for catalysis and were recently reported to possess intrinsic hydrophobicity. The surface chemistry of these oxides in the low temperature regime, however, remains to a large extent unexplored. The reactions occurring at RE surfaces at room temperature (RT) in real air environment, in particular, in presence of polycyclic aromatic hyd...
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Carbon nanotubes can be chemically modified by attaching various functionalities to their surfaces, although harsh chemical treatments can lead to their break-up into graphene nanostructures. On the other hand, direct coupling between functionalities bound on individual nanotubes could lead to, as yet unexplored, spontaneous chemical reactions. Here we report an ambient mechano-chemical reactio...
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ژورنال
عنوان ژورنال: Bulletin of the Chemical Society of Japan
سال: 1980
ISSN: 0009-2673,1348-0634
DOI: 10.1246/bcsj.53.1455