| 摘要 |
A process for the preparation of double sodium-chrome (III) difluoridediorthophosphate in solid polycrystalline state of general formula of NaCr(PO)Finvolves the use of melt of mechanical mixture of polycrystalline substances. The mechanical mixture of NaPOand (NH)HPOis ground in agate mortar, poured to platinum crucible (porcelain crucible) of 100 ml volume and homogenized for 1 hour at temperature of 800 °C, NaF (20 % weight %) is added to produced melt and hold at temperature of 850 °C for 1 hour, CrO(13-15 weight %) is introduced, homogenized at 900 °C for 2 hours, crystallized in interval of 900-700 °C for 24 hours. The obtained crystals are washed and dried at room temperature. |
