您目前所在的位置:首页 - 期刊简介 - 详细页面

铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 15    No. 4    August 2005

[PDF Download]    [Flash Online]

    

Activity coefficient calculation model for 
NaAl(OH)4-NaOH-H2O system
LI Xiao-bin(李小斌), LÜ Wei-jun(吕卫君), LIU Gui-hua(刘桂华), 
PENG Zhi-hong(彭志宏), ZHOU Qiu-sheng(周秋生), 
MENG Yun(孟 芸), REN Wan-neng(任万能)

School of Metallurgical Science and Engineering, Central South University, 
Changsha 410083, China

Abstract: Resorting to Debye-Hückel equation, the conception of the apparent dielectric constant ε′ of sodium aluminate solution is introduced. By supposing that all the influences are attributed to it, ε′ is successfully related to caustic ratio αK, concentration mNaOH, T and temperature T. Then an activity coefficient calculation model for NaAl(OH)4-NaOH-H2O system from 25℃ to 100℃ is established, which can be used in much wider αK and mNaOH, T ranges than those covered by the equilibrium solubility data.

 

Key words: Debye-Hückel equation; activity coefficient; calculation model 

ISSN 1672-7029
CN 43-1423/U

主管:中华人民共和国教育部 主办:中南大学 中国铁道学会 承办:中南大学
湘ICP备09001153号 版权所有:《铁道科学与工程学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市韶山南路22号 邮编:410075
电 话:0731-82655133,82656174   传真:0731-82655133   电子邮箱:jrse@mail.csu.edu.cn