APPLICATION OF THE EXTENDED REAL ASSOCIATED SOLUTION MODEL TO PREDICTTHERMODYNAMIC PROPERTIES OF N-ALCOHOL PLUS LINEAR MONOETHER MIXTURES

Applicability of the extended real associated solution (ERAS) model to describe and predict properties of n-alcohol + unbranched monoether m ixtures has been tested. Two versions of the model have been applied: its original, developed by Heintz [1] and a modified form, reported re cently by Hofman and Casanova [2]. The basic assumption states that th e purely physical contribution to the model should be meaningless. The model has three adjustable parameters which are common for all the mi xtures considered. It has been applied to predict H-E, V-E and VLE dat a. The modified version gives acceptable results which for the non-vol ume properties are similar to those predicted by the Modified UNIFAC ( Dortmund) using six parameters. The original ERAS model turned out to be inadequate. (C) 1997 Elsevier Science B.V.