Preparation of PVC-NiFeCo3-Hybrid membranes for the Pervaporation Separation of Toluene-Heptane mixtures

Abstract

Separation of organic-organic liquid mixtures using membranes has been investigated extensively over the past several decades due to its great significance in the chemical industry, Aromatic-alkane, alkane alkene and aromatics removal from gasoline systems among the most studied. These compounds are often present at very low concentrations in the mixtures and their recovery with traditional techniques, such as distillation and partial condensation, are not very simple. Pervaporation (PV) has been considered as one of the most active and promising areas in membrane technologies. In PV, the membrane itself is the key Polyvinyl chloride (PVC)-based mixed matrix membranes were prepared with LDH layered double hydroxide (NiFeCO 3 ) particles, and were studied for the separation of toluene-heptane mixtures. It was found that the PVC transport properties could be significantly modified by the amount of NiFeCO 3 incorporated. NiFeCO 3 /PVC membranes were characterized by IR FT spectroscopy and ATG.

High‐flux and solvent‐selective membranes with aromatic functionalities and dual‐layer structures

“…Compared with traditional technologies, such as liquid–liquid extraction, azeotropic distillation, and extractive distillation, membrane technology holds great promise owing to its small footprint, easy operation, and low energy cost 1–7 . In the past decades, pervaporation, one representative membrane technology used to separate liquid mixtures, has long been the first choice to acquire the desired selectivity 8–12 . Solution‐diffusion theory is often utilized to describe the separation mechanism of this technique 13,14 .…”