Hydrocarbon Azeotropes of Benzene

Spectra and structure of binary azeotropes VI-benzene-methanol.

Benzene and methanol make a minimum boiling point homogeneous binary azeotrope with the mole ratio 2:3. Some characteristic vibrational modes, as well as (1)H NMR signals change due to the azeotrope formation. The extend of interaction of these molecules causes significant changes on some vibrational modes involved, and (1)H NMR signals show some changes on their position. No IR, Raman, and NMR...

Reliable Computation of Reactive Azeotropes

The determination of the existence and composition of reactive azeotropes is important from both theoretical and practical standpoints in the analysis of combined reaction and phase equilibrium and in the synthesis and design of reactive separation systems. We present here a new method for reliably locating, from given thermodynamic models, any and all reactive azeotropes for multicomponent mix...

Reliable Computation of Homogeneous Azeotropes

The determination of the existence and composition of homogeneous azeotropes is important both from both theoretical and practical standpoints in the analysis of phase behavior and in the synthesis and design of separation systems. We present here a new method for reliably locating any and all homogeneous azeotropes for multicomponent mixtures. The method also veri es the nonexistence of homoge...

Computation of Reactive Azeotropes Using Interval Analysis

Locating All Azeotropes in Homogeneous Azeotropic Systems

A global optimization based approach for nding all homogeneous azeotropes in multicompo-nent mixtures is presented. The global optimization approach is based on a branch and bound framework in which upper and lower bounds on the solution are reened by successively partitioning the target region into small disjoint rectangles. The objective of such an approach is to locate all global minima sinc...