摘要
旨在促进癸二酸的连续化生产,采用动态法测定癸二酸在289.25~373.15 K范围的溶解度,采用聚焦光束反射测量技术测定了癸二酸在333.15~353.15 K的介稳区,研究了饱和温度和降温速率对介稳区的影响以及过饱和度与晶体生长速率的关系。结果表明:癸二酸的溶解度随着温度的升高而增大;癸二酸的介稳区随饱和温度的增大而变窄,随降温速率的增大而变宽;癸二酸在水溶液中的晶体生长速率与晶体粒度大小无关,与过饱和度呈线性增长关系,生长速率常数为3.611×10^(-6)g/(m^(2)·s),生长级数为1.498。
In order to promote the continuous production of sebacic acid,the solubility of sebacic acid in the range of 289.25-373.15 K was determined by dynamic method,and the metastable region of sebacic acid in the range of 333.15-353.15 K was determined by focused beam reflection measurement technology.The effect of saturation temperature and cooling rate on the metastable region and the relationship between supersaturation and crystal growth rate were studied.The results showed that the solubility of sebacic acid increased with the increase of temperature.The metastable zone of sebacic acid narrowed with the increase of saturation temperature and widened with the increase of cooling rate.The crystal growth rate of sebacic acid in aqueous solution was independent of the crystal size,but linearly increased with supersaturation.The growth rate constant was 3.611×10^(-6)g/(m^(2)·s),and the growth order was 1.498.
作者
黄志强
李健
苏杭
徐庆
宋继田
HUANG Zhiqiang;LI Jian;SU Hang;XU Qing;SONG Jitian(Tianjin Key Laboratory of Integrated Design and On-line Monitoring for Light Industry&Food Machinery and Equipment,College of Mechanical Enginnering,Tianjin University of Science and Technology,Tianjin 300222,China;Lanpec Technologies Limited(Shanghai),Shanghai 201518,China;Lanpec Technologies Limited,Lanzhou 730070,China)
出处
《中国油脂》
CAS
CSCD
北大核心
2024年第7期96-100,共5页
China Oils and Fats
基金
国家重点研发计划(2022YFD2100402)
甘肃省科技计划资助项目(18YF1GA005)。
关键词
癸二酸
溶解度
结晶介稳区
晶体生长速率
sebacic acid
solubility
crystalline metastable zone
crystal growth rate
