hydrolysis of semi mustard (s.m) by mnco2o4 (mno-co2o3) nanocomposite as a binary oxide catalyst: kinetics reactions study

mnco2o4 (mno-co2o3) nanocomposite as a binary oxide has been successfully prepared by precipitation method using cobalt nitrate and manganese nitrate as the precursors and then characterized by scanning electron microscopy-energy dispersive micro-analysis (sem-edx) and x-ray diffraction (xrd) techniques. in this work, we report the hydrolysis kinetics reactions of semi mustard (chloroethyl ethyl sulfide (cees)/s.m), a mimic of bis (chloroethyl) sulfide (i.e. sulfur mustard) that were carried out on the surface of mnco2o4 nanocomposite as a destructive sorbent catalyst and were performed using gc-fid and gc-ms instruments. the effect of different parameters including solvent type and reaction time on the reaction efficiency were investigated. gc-fid analysis results emphasized that the maximum hydrolysis of cees was related to n-hexane nonpolar solvent after the elapse of the reaction (12 h) at room temperature (25±1°c) with a 95% yield. on the other hand, minimum hydrolysis was reported for methanol polar solvent under similar conditions. the rate constant and half-life (t1/2) have been calculated 6.91×10-6 s-1 and 6.98×10-5 s-1, and 105 s and 9.9×103 s for methanol and n-hexane solvents, respectively. also, data explore the role of the hydrolysis product, i.e. hydroxyl ethyl ethyl sulfide (hees) in the reaction of cees with mnco2o4 nanocomposite and gc-ms analysis was applied to identify and quantify semi mustard destruction product.