Solubility of oxygen in liquid potassium

Krishnamurthy, D. ; Thiruvengadasami, A. ; Bhat, N. P. ; Mathews, C. K. (1987) Solubility of oxygen in liquid potassium Journal of the Less Common Metals, 135 (2). pp. 285-292. ISSN 0022-5088

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The solubility of oxygen in liquid potassium has been determined in the temperature range of 343 to 675 K. Equilibration experiments were carried out in a nickel-lined stainless steel solubility vessel with samples being withdrawn through a nickel filter of porosity 5 µm. The oxygen content of the filtered sample was determined by the vacuum distillation method. A least-squares fit of the solubility data yielded the following equation: logC (ppm) = 3.9702-420.4/T(K) The heat of solution derived from this expression is 8047 J mol -1. The new solubility equation has been utilized to calculate oxygen potentials in liquid potassium and threshold oxygen levels for the formation of KCrO2 on a stainless-steel surface exposed to liquid potassium at high temperatures.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:25391
Deposited On:06 Dec 2010 13:28
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