Three different crystal phases of magnesium oxide [B1 (NaCl), B2 (CsCl), and B${8}_{1}$ (inverse NiAs)] are investigated theoretically. An ab initio all-electron linear combination of atomic orbitals Hartree-Fock approximation is adopted; extended basis sets are used which have been variatio...
The magnesium-based compounds are probably the most common examples having the formula Mg2(Pb, Sn, Ge or Si). These have many features in common with salt-like compounds since their compositions satisfy the chemical valency laws, their range of solubility is small and usually they have high ...
MAGNESIUM FLUORIDECATALYTIC PROPERTIESSolid oxide solutions (SOS) of La, Sr and Cr of the formula La 1-x Sr x CrO 3-β (where δ is the deviation from stoichiometry and 0 < x < 0.5) exhibit catalytic activity for oxidation (CO-oxidation) which rivals that of a highly dispersed 0.5% ...
The matrix mineral support may also be a mineral filler chosen from calcium or magnesium silicates or metasilicates, titanium dioxide, aluminum, zinc or calcium oxide, calcium, zinc or magnesium carbonate, sodium, ammonium or calcium sulfate, bentonite, kaolin, attapulgite, zeolites, fused sodium po...
magnesium carbonate Lansfordite MgCO3.5H2O 1.456 * lead dioxide Lead dioxide PbO2 2.3 * lead persulfate Lead dithionate PbS2O6.4H2O 1.635 * silica Lechatelierite SiO2 1.45 * lime, calcium oxide lime CaO 1.838 * illite, clay Illite (clay) 1.54-1.61 * iridium Iridium Ir 2.4 * iron iron Fe...
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The formulae for specific capacitance (Cs), mass ratio, energy density (E), aerial capacitance (A), and power density (P) are shown below: $$Cs=\frac{I \times dt}{m \times dV}$$ (1) $$E=\frac{1}{2}\left(Cs \times {(dV)}^{2}\right)$$ (2) $$P= \frac{E}{dt}...
摘要: PURPOSE: To improve flame resistancy by unevenly entering a 2-valent transition metal ion in high concn. into solid solution in the vicinity of the surface of each crystal of a magnesium hydroxide-based solid solution expressed by a specific formula....
m in an amount of 3 to 20 parts by mass, and a magnesium oxide having a BET specific surface area, as determined by the one-point method specified by JIS Z8830, of 20 to 150 m2/g in an amount of 4 to 16 parts by mass. A vulcanizate and a molded article obtained by molding ...
Composite ceramics based on magnesium oxide (MgO) as insulator (Ins) with gadolinium doped ceria (GDC) as solid electrolyte (SE) were prepared for model verification. It was found that SE/Ins grain boundaries exhibit conductivities 4–8 times higher than those of SE single phase material despite...