HYDROTHERMAL SYNTHESIS AND CHARACTERIZATION OF A NEW ALUMINUM VANADIUM-OXIDE HYDROXIDE AL-2(OH)(3)(VO4)

Citation
B. Pecquenard et al., HYDROTHERMAL SYNTHESIS AND CHARACTERIZATION OF A NEW ALUMINUM VANADIUM-OXIDE HYDROXIDE AL-2(OH)(3)(VO4), Journal of materials chemistry, 8(5), 1998, pp. 1255-1258
Citations number
24
Categorie Soggetti
Chemistry Physical","Material Science
ISSN journal
09599428
Volume
8
Issue
5
Year of publication
1998
Pages
1255 - 1258
Database
ISI
SICI code
0959-9428(1998)8:5<1255:HSACOA>2.0.ZU;2-1
Abstract
A new aluminium vanadium oxide hydroxide analog of the mineral augelit e has been prepared by hydrothermal treatment of a 1:1:2.65 aqueous so lution of V2O5, Al(NO3)(3) . 9H(2)O, and TMAOH at 200 degrees C for 5 days. X-Ray powder diffraction data show that this phase crystallizes with monoclinic symmetry with space group C2/m. The structure was solv ed by using direct methods and then full profile Rietveld refinement w as carried out; it's cell parameters are: a = 13.5634(2) Angstrom, b = 8.2267(2) Angstrom, c = 5.31232(9) Angstrom and beta = 112.741(1)degr ees in space group C2/m. The structure contains clusters of edge shari ng AlO6 octahedra and AlO5 trigonal bipyramids. These clusters are joi ned together by VO4 tetrahedra.