Adsorption desulphurisation of dinnethyl sulphide using nickel-based Y zeolites pretreated by hydrogen reduction

摘要

A series of nickel-modified Y zeolites were prepared for the adsorption of dimethyl sulphide (DMS) in liquid hydrocarbon streams. The adsorption iii sulphurisation performance was investig,ated under ambient conditions of nickel based adsorbents developed by the liquid phase ion exchange (LPIE) method and the incipient wetness impregnation (IWI) method with and without the ultrasonic aid I echnique. It was found that the nickel -modified Y zeolite prepared by the MI method with the ultrasonic aid technique With hydrogen reduction demk nstrated a high sulphur cltpacity of 69.9 mg of S per g of sca'bent at a break -through sulphur level of 10 mu g g(-1). The sorbents thus prepared were characterised by elemental analysis, XRD, TPR, H chemisorption, pyridine-FTIR, XPS, and SEM. The results showed that a high dispersion of metallic nickel atoms loaded on Y zeolite had an important role in determining the DMS removal capacity and the adsorption behaviour exhibited promiainced dependence on the metal introductkm method. (C) 2015 Institute of Chernistry, Slovak Acadeirly of Sciences