Physico-chemical investigation of vanadinite |
| 3 | |
| 2008 |
| CHEMISTRY |
| scientific article | 546.881.5 | ||
| 65-68 |
| A compound with the composition Pb5(VO4)3Cl, which is a synthetic analogue of the mineral vanadinite, has first been synthesized by the high-temperature solid-phase reaction. An irreversible polymorphic transition at 730°С associated with a decrease in the unit cell symmetry has been found using differential scanning calorimetry and high-temperature X-ray diffraction. Standard enthalpies of formation and polymorphic transition have been determined by the method of adiabatic reaction calorimetry. |
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