What are the methods for breaking azeotropes? Thank you
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What are the methods for breaking azeotropes? Thank you. Pentanol and pentanenitrile, which I need to separate, have an azeotrope at 130–134 degrees; using a 1.3 m glass distillation column, only a small amount of pentanenitrile is released after the pentanol has evaporated. 2/3 of the output is a mixture of the two.
1. Apply pressure to disrupt or exceed the azeotrope composition point. 2. Add a third component, an azeotrope-forming agent, for azeotropic distillation, or add an extractant for extractive distillation. As for which azeotrope or extractant to use, operational feasibility and cost-effectiveness need to be considered comprehensively. If toluene or xylene is added as an azeotrope component ； Furfural, chloroform, etc. are added as extractants.