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Electrocatalysis: From Planar Surfaces to Nanostructured Interfaces. [PDF]
Chem RevFairhurst AR +4 more
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Effect of Synthesis and Processing Conditions on the Sintering Behavior and Total Conductivity of High-Entropy Fluorite/Bixbyite Oxides (RE-HEOs). [PDF]
Materials (Basel)Spiridigliozzi L +5 more
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Acta Crystallographica Section C Crystal Structure Communications, 2001
A single crystal of Sn(1.59)Nb(1.84)O(6.35) was grown at 1273 K from a mixture of sodium niobate and tin(II) chloride. The structure is of pyrochlore type A(2)B(2)O(7). The tin is partially oxidized to tin(IV) and competes with niobium for the occupation of site B.
L P, Cruz, J M, Savariault, J, Rocha
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A single crystal of Sn(1.59)Nb(1.84)O(6.35) was grown at 1273 K from a mixture of sodium niobate and tin(II) chloride. The structure is of pyrochlore type A(2)B(2)O(7). The tin is partially oxidized to tin(IV) and competes with niobium for the occupation of site B.
L P, Cruz, J M, Savariault, J, Rocha
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Pyrochlores for Advanced Oxygen Electrocatalysis
Accounts of Chemical Research, 2022Fuel cells (FCs), water electrolyzers (WEs), unitized regenerative fuel cells (URFCs), and metal-air batteries (MABs) are among the emerging electrochemical technologies for energy storage, fuel (H2), oxidant (O2), and clean energy production. Their commercial applications are hindered by the low oxygen reduction reaction/oxygen evolution reaction (ORR/
Pralay Gayen, Sulay Saha, Vijay Ramani
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Geochemical alteration of pyrochlore group minerals; pyrochlore subgroup
American Mineralogist, 1995Primary alteration of uranpyrochlore from granitic pegmatites is characterized by the substitutions ADYD-+ ACaYO,ANaYF-+ ACaYO,and ANaYOI-I--+ ACaYO.Alteration occurred at "" 450-650 °C and 2-4 kbar with fluid-phase compositions characterized by relatively low aNa+,high aeaH, and high pH.
Gregory R. Lumpkin, Rodney C. Ewing
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Pyrochlores. X. Madelung energies of pyrochlores and defect fluorites
Canadian Journal of Chemistry, 1976Electrostatic (Madelung) lattice energies have been calculated for a wide range of compounds A2B2X6Y with the pyrochlore-type structure. The cases of disorder and partial disorder on the non-metal sites have been examined, as well as the inverse case, where Y is a positive ion.
William W. Barker +2 more
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Journal of Solid State Chemistry, 1994
Abstract The luminescence of the pyrochlores Y2Ti2O7, Cd2Nb2O7, and Pb2Nb2O7 is reported and discussed. Relations with the luminescence of comparable compounds is made.
M. Hamoumi, M. Wiegel, G. Blasse
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Abstract The luminescence of the pyrochlores Y2Ti2O7, Cd2Nb2O7, and Pb2Nb2O7 is reported and discussed. Relations with the luminescence of comparable compounds is made.
M. Hamoumi, M. Wiegel, G. Blasse
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Zirconate pyrochlores under high pressure
Physical Chemistry Chemical Physics, 2010Ab initio total-energy calculations and X-ray diffraction measurements have been combined to study the phase stability of zirconate pyrochlores (A(2)Zr(2)O(7); A = La, Nd and Sm) under pressures up to 50 GPa. Phase transformations to the defect-cotunnite structure are theoretically predicted at pressures of 22, 20 and 18 GPa, in excellent agreement ...
H Y, Xiao +5 more
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Murataite–Pyrochlore Series: A Family of Complex Oxides with Nanoscale Pyrochlore Clusters
Angewandte Chemie International Edition, 2010identified murataite in a Synroc matrixwith imitators of HLRWs from PO Mayak, a radiochemicalfacility for production and reprocessing of nuclear fuel in theRussian Federation. Five volume percent of this phaseaccumulated about 40% of the total uranium present in thesample,andthisledtodetailedinvestigationsofthechemistryand properties of murataite, in ...
Sergey V, Krivovichev +5 more
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Journal of Physics and Chemistry of Solids, 1984
Preparation du compose a partir d'un melange Ga 2 O 3 , Sb 2 O 3 et Gd 2 O 3 dans les rapports molaires 1:1:2, par chauffage a l'air a differentes temperatures.
P. Garcia Casado, I. Rasines
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Preparation du compose a partir d'un melange Ga 2 O 3 , Sb 2 O 3 et Gd 2 O 3 dans les rapports molaires 1:1:2, par chauffage a l'air a differentes temperatures.
P. Garcia Casado, I. Rasines
openaire +1 more source