Abstract:

An approach was proposed to determine the solubility of pure zinc lactate at a high heating rate(20 K·h^-1), which significantly improves the efficiency of solubility measurement.The results showed a good agreement with the solubility data obtained through isothermal processes.This approach was extended to measure the solubility of zinc lactate in the presence of small amount of impurity.The influences of impurities, including malic acid, succinic acid and sodium oxalate, on the primary nucleation kinetics of zinc lactate in cooling crystallization were investigated, and a method was presented to estimate the primary nucleation kinetics based on Nyvlt theory by measuring the metastable zone width of zinc lactate at specific cooling rate in the solution.The results showed that the rate of primary nucleation of zinc lactate decreased in the presence of malic acid or succinic acid.However, when sodium oxalate was introduced in the solution, the nucleation of zinc lactate was accelerated at low supersaturation but suppressed at high supersaturation.

Key words: FONT-SIZE: 10.5pt, mso-ascii-font-family: Times New Roman, mso-bidi-font-family: Times New Roman, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-hansi-font-family: Times New Roman">成核；乳酸锌；杂质；初次成核动力学

关键词: FONT-SIZE: 10.5pt, mso-ascii-font-family: Times New Roman, mso-bidi-font-family: Times New Roman, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-hansi-font-family: Times New Roman">成核；乳酸锌；杂质；初次成核动力学