Materials Research Bulletin, Vol.33, No.4, 635-643, 1998
The formation of vanadyl phosphate hydrates from aqueous phase : A systemic study
Several vanadyl phosphate hydrates have been synthesized by hydrothermal preparation, depending on concentration and temperature. VOHPO4 . 4H(2)O, alpha-VOHPO4 . 2H(2)O, VOHPO4 . 0.5H(2)O, (VO)(3)(PO4)(2) . 9H(2)O, and three new phases, gamma-VOHPO4 . 2H(2)O, (VO)(3)(PO4)(2) . 7H(2)O, and (VO)(3)(PO4)(2) . 6H(2)O, have been found. Single crystals for the structure analysis of VOHPO4 . 4H(2)O, alpha-VOHPO4 . 2H(2)O, gamma-VOHPO4 . 2H(2)O, VOHPO4 . 0.5H(2)O, and (VO)(3)(PO4)(2) . 9H(2)O have been prepared.