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题名: 298.15K下Li_2B_4O_7-H_2O体系水蒸汽分压及渗透系数的等压测定和离子相互作用模型
作者: 张爱云 ;  姚燕 ;  宋彭生
刊名: 高等学校化学学报
出版日期: 2004-10-15
期号: 10, 页码:1362-1364
关键词: Li2B4O7-H2O体系 ;  等压法 ;  渗透系数 ;  饱和蒸汽压 ;  离子相互作用模型
英文摘要: Isopiestic molalities, vapor pressures and osmotic coefficients of aqueous Li 2B 4O 7 solutions from 0.027 5 to 2.939 7 mol/kg were determined at 298.15 K by using an improved apparatus. The rule of the changes in vapor pressure over aqueous Li 2B 4O 7 solutions was revealed, which indicated that the bond of borate anions with water are better than that of NaCl. The different formation reaction equilibria for the species containing boron of boric acid and borate anions B(OH) - 4, B 3O 3(OH) - 4 and B 4O 5(OH) 2- 4 in Li 2B 4O 7(aq) solutions were taken into account. The stoichiometric equilibrium constants for the formation reactions of the boron species and the ion-interaction parameters were estimated simultaneously by using Pitzer equations of osmotic coefficient with minor modifications. Sixteen parameters were obtained with a standard deviation 0.005 5 for the ion-interaction model.
语种: 中文
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内容类型: 期刊论文
URI标识: http://ir.isl.ac.cn/handle/363002/548
Appears in Collections:青海盐湖研究所知识仓储(2014年之前)_期刊论文

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Recommended Citation:
张爱云,姚燕,宋彭生. 298.15K下Li_2B_4O_7-H_2O体系水蒸汽分压及渗透系数的等压测定和离子相互作用模型[J]. 高等学校化学学报,2004-10-15(10):1362-1364.
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文件名: 298_15K下Li_2B_4O_7_H__省略_分压及渗透系数的等压测定和离子.pdf
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