Parametric Studies on Synthesis of BIS(4-Chlorobenzyl) Sulfide Using Hydrogen Sulfide

Abstract

This study focuses on the utilization of Hydrogen Sulphide (H2S) for the synthesis of Bis(4-chlorobenzyl)sulfide and Chlorobenzyl Mercaptan (CBM). This involves the absorption of H2S in Methyl Diethanolamine and then reaction of this H2S- rich Methyl diethanolamine with Chlorobenzyl Chloride for the synthesis of Bis(4-chlorobenzyl)sulfide and CBM. MDEA and Chlorobenzyl Chloride are two different phases and their reaction is very difficult to occur. So, to carry out the above reaction a phase transfer catalyst (PTC) has been used. The Ethyl Triphenyl Phosphonium Bromide (ETPB) has been used as the phase transfer catalyst. The objective of this work is to maximize the conversion of Chlorobenzyl Chloride and maximize the selectivity of Bis(4-chlorobenzyl)sulfide. In this project, Chlorobenzyl Chloride has been used along with Toluene as a solvent. Reaction time, catalyst loading, stirring speed, temperature and concentration of Chlorobenzyl Chloride are chosen as parameters.