磷酸二氢铵结晶介稳区及诱导期的测定

摘要

采用激光测定装置研究了温度、降温速率、磷酸三丁酯（TBP）对磷酸二氢铵（ADP）的介稳区的影响，重点研究了其介稳区的变化规律，计算了不同条件下磷酸二氢铵的介稳区和表观成核级数。测定了磷酸二氢铵在磷酸三丁酯存在下的诱导期，并应用经典成核理论计算成核参数。研究结果表明：磷酸二氢铵的介稳区宽度在高温区狭窄而在低温区较宽，介稳区宽度随着降温速率的增大而变大，磷酸三丁酯的加入增大了介稳区、诱导期和成核参数。

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	齐莹莹
	党乐平
	王占忠
	卫宏远

关键词：磷酸二氢铵介稳区诱导期磷酸三丁酯成核参数

Abstract：

The effect of temperature, cooling rate and tributy phosphate (TBP) on the metastable zone width (MSZW) of ammonium dihydrogen phosphate (ADP) was investigated in this work. The MSZW and the apparent nucleation order of ADP under different conditions were calculated. The induction time for ADP with and without TBP was determined, and the nucleation parameters were determined using the classical theory of nucleation. The results show that the MSZW decreases with increasing temperature and the presence of TBP leads to an increase in the MSZW, induction time and nucleation parameters.

Keywords： ADP； MSZW； induction time； tributyl phosphate； nucleation parameter

Received 2016-03-14;

Corresponding Authors: 党乐平,E-mail:dangleping@tju.edu.cn。 Email: dangleping@tju.edu.cn

About author: 齐莹莹(1990-),女,硕士研究生,主要从事结晶过程方面的研究。

引用本文:

齐莹莹, 党乐平, 王占忠, 卫宏远.磷酸二氢铵结晶介稳区及诱导期的测定[J]. 化学工业与工程, 2018,35(2): 55-61

Qi Yingying, Dang Leping, Wang Zhanzhong, Wei Hongyuan.Metastable Zone Width and Induction Time Measurement of Ammonium Dihydrogen Phosphate[J]. Chemcial Industry and Engineering, 2018,35(2): 55-61

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