The Ostwald Rule of Stages

Crystal Research and Technology - Tập 30 Số 4 - Trang 443-449 - 1995
Jaroslav Nývlt1
1Institute of Inorganic Chemistry, Academy of Sciences of the Czech Republic, Pelléova 24, 16000 Prague, 6 Czech Republic

Tóm tắt

AbstractCrystallization from solutions often starts in such a way that thermodynamically unstable phases appear first followed by recrystallization to thermodynamically stable phases. This empirical observation, called as Ostwald's rule of stages, is explamed here on the basis of structure changes of solutions. Experiments supporting this explanation have been carried out with aqueous solutions of citric acid, sodium hydrogen phosphate and ferrous sulphate, respectively.

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Tài liệu tham khảo

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Crystal Research and Technology

Tập 30 Số 4

443-449

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