Density Calculations for (Na, K)BH4 + (Na, K)BO2 + (Na, K)OH + H2O Solutions Used in Hydrogen Power Engineering

被引：16

作者：

Churikov, Alexei V. ^{[1
]}

Ivanishchev, Alexander V. ^{[1
]}

Gamayunova, Irina M. ^{[1
]}

Ushakov, Arseni V. ^{[1
]}

机构：

[1] Saratov NG Chernyshevskii State Univ, Inst Chem, Saratov 410012, Russia

来源：

JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2011年 / 56卷 / 11期

关键词：

BOROHYDRIDE FUEL-CELLS;

D O I：

10.1021/je200216n

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Concentrated water-alkaline mixtures of sodium and potassium borohydrides and borates are used as fuel and hydrogen sources in hydrogen power engineering, including low-temperature fuel cells. The performance of such mixtures is determined by their physicochemical properties. An algorithm to calculate the density of mixed solutions of the five-component (Na, K)BH4 + (Na, K)BO2 + (Na, K)OH + H2O system based on density quasi-additivity is proposed. The density concentration temperature dependences for aqueous KOH, NaOH, KBO2, NaBO2, NaBH4, and KBH4 solutions of any composition in a temperature range of (10 to 50) degrees C and in the whole concentration range are described mathematically. The technique and algorithm of calculation have been verified by comparison with measured properties.

引用

页码：3984 / 3993

页数：10