Transactions of the INDIAN CERAMIC SOCIETY Vol. 30 1971
Vaporisation of Cesium from Cesium Metaborate, Cesium
Silicate, Cesium Borosilicate and Mixtures of Cesium
Nitrate, Boric Oxide and Silica
J. MUKERJI
Pages : 57-67
DOI : 10.1080/0371750X.1971.10840761
Abstract
Volatilisation loss of cesium from glass melts and from glass batches containing cesium
nitrate has been reported. Transpiration vapour pressure measurement of stoichiometric
CsB02 in the temperature range 898-136 r K and pseudo-vapour pressure of cesium over
cesium silicate and cesium borosilicate in the temperature range 1323-1423° K have been
determined. Cesium metaborate has a vapour pressure of the order of J0-2 atmosphere
at J36lK whereas cesium vapour pressures over cesium tetrasilicate and cesium
borosilicate are of the order of I0-5 atmosphere. Cesium vapour pressure over cesium
borosilicate is about 3 times higher at I 150°C than the corresponding pressure of cesium
silicate. Heat and entropy of evaporation for the reaction CsB02 (I)~ CsBO 2 ( v) have
been found to be 41.38 ± 4 K calfmole and 23.5 e.u. respectively.
