[1]王光龙,张芳军,张宝林..固体硫酸脲的研究[J].郑州大学学报(工学版),2006,27(04):32-35.[doi:10.3969/j.issn.1671-6833.2006.04.009]
　Wang Guanglong,ZHANG Fangjun,Zhang Baolin.Study of solid urea sulfate [J].Journal of Zhengzhou University (Engineering Science),2006,27(04):32-35.[doi:10.3969/j.issn.1671-6833.2006.04.009]
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固体硫酸脲的研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
27卷
期数:
2006年04期
页码:
32-35
栏目:
出版日期:
1900-01-01

文章信息/Info

Title:
Study of solid urea sulfate

作者:
王光龙; 张芳军; 张宝林.
郑州大学化工学院,河南,郑州,450001, 郑州大学化工学院,河南,郑州,450001, 郑州大学化工学院,河南,郑州,450001
Author(s):
Wang Guanglong; ZHANG Fangjun; Zhang Baolin
关键词:
硫酸脲;  制备;  影响因素;  物性
Keywords:
DOI:
10.3969/j.issn.1671-6833.2006.04.009
文献标志码:
A
摘要:
研究了硫酸脲制备过程中可控主要因素的影响以及固体硫酸脲的晶体形状、X射线衍射图、吸湿性和水溶液的酸性.实验表明,硫酸脲制备过程中的主要影响因素为:尿素、硫酸的比例、反应温度及硫酸浓度等,其中n(尿素)∶n(硫酸)=2∶1,反应温度为80℃,硫酸质量分数为95%～98%,显微镜下观测其晶体呈六棱柱状.X射线衍射图表明:生成物与可能生成的物质的X射线衍射图完全不同,吸湿性与时间呈直线关系,水溶液的酸性较同等浓度的硫酸弱而比柠檬酸强.以上反应条件下可以制备出性质稳定、成本较低的固体硫酸脲.
Abstract:
The influence of controllable main factors in the preparation of urea sulfate, as well as the crystal shape, X-ray diffraction pattern, hygroscopicity and acidity of the aqueous solution of the solid urea sulfate were studied. Experiments show that the main influencing factors in the preparation of urea sulfate are: the ratio of urea and sulfuric acid, reaction temperature and sulfuric acid concentration, among which n(urea)∶n(sulfuric acid)=2∶1, the reaction temperature is 80 °C, the mass fraction of sulfuric acid is 95%~98%, and its crystals are hexaprism under microscopy. The X-ray diffraction pattern showed that the X-ray diffraction pattern of the product and the possible generated substance was completely different, the hygroscopicity was linear with time, and the acidity of the aqueous solution was weaker than that of the same concentration of sulfuric acid and stronger than citric acid. Under the above reaction conditions, solid urea sulfate with stable properties and low cost can be prepared.

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更新日期/Last Update: 1900-01-01