Phase Transfer Catalysts

 

 

Phase transfer catalyst (PTC) is a specific application of heterogeneous catalysis that accelerates the migration of the reactant from one phase to another. It is one of the exceptional and promising approaches for the synthesis of organic molecules.

An anion's desired active form is transferred via a phase transfer catalyst (PTC) from the aqueous phase to the organic phase, which is where the reaction takes place. Establishing a trustworthy thermodynamic model capable of capturing the phase behaviors of all components, including water, organic solvents, inorganic salts, and the PTC, is one of the biggest problems for process design of the PTC system. 

In this study, the Debye-Hackle theory and a second viral coefficient-type component have been incorporated into the KT-UNIFAC model to create a novel electrolyte model based on the group contribution technique. The new model's temperature-dependent parameters are added to enhance the description of phase equilibrium in the range of temperatures between 273.15 and 373.15 K.

The range of applications for the PTC-system model has been expanded by the successful application of the proposed model to the predictions of phase behaviors of alkali halide aqueous solutions that are typically seen in PTC systems. The e-NRTL-SAC model has been used to determine the solubility of Phase transfer catalyst (PTC) in organic solvents, a crucial component of PTC strategy and solvent selection.