Phosphates MCr x Ti2 − x (PO4)3: Synthesis, structure, and catalytic properties.

Autor: Pet’kov, V., Shchelokov, I., Kurazhkovskaya, V., Orekhova, N., Ermilova, M., Tereshchenko, G.
Zdroj: Russian Journal of Inorganic Chemistry; Jul2008, Vol. 53 Issue 7, p993-999, 7p
Abstrakt: Complex phosphates of titanium, chromium, and metals(2+) of the general formula M0.5(1 + x )Cr x Ti2 − x (PO4)3 (M = Mg, Ca, Mn, Ni, Sr, Ba, and Pb) were synthesized. Their phase formation was studied by means of X-ray powder diffraction, electron probe microanalysis, differential thermal analysis, and IR spectroscopy. Individual phases and solid solutions crystallizing in kosnarite and langbeinite structure types were identified; their crystallographic parameters were calculated. The catalytic properties of phosphates Ca0.5(1 + x )Cr x Ti2 − x (PO4)3 in methanol conversion were studied. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index