Preparation And Characterization Of ZnTiO₃/Ni And Properties Of Adsorption Desulfuization

The demands for environmental quality is improved as the concept of envi-ronmental protection is strengthen continuously. Deep desulfurization of fuel oil hasbecome the focus of the world attend. ZnTiO3material system, which is the perfectcombination of ZnO and TiO2, has wide applications in both the field of adsorptiondesulfurization and photocatalytic. In recent years, nickel and its composite materialshave many good adsorption properties thus are reported widely in the literature. Inparticularly, Ni-coated ZnO and Ni-modified zeolites have been confirmed own goodadsorption desulfurization effects for the fuel oil. In this article, ZnTiO3porousnanomaterials was prepared, then explored its adsorption desulfurization performance offuel oil. In order to improve the adsorption desulfurization performance, using chemicalplating on the surface coated with a layer of Ni, ZnTiO3/Ni nanocomposite was pre-pared and discussed adsorption desulfurization performance of ZnTiO3/Ni compositenanomaterials.In this thesis, butyl titanate was acted as the source of titanium, zinc acetate andzinc nitrate were acted as the source of zinc, using benzoic acid and aldoxime acted asmixed bridging agent and3,4-dihydroxy benzoic acid acted as a single bridging agentrespectively to prepare the porous nano-ZnTiO3materials. Its structure, composition andmorphology were analyzed by the characterization methods such as FTIR, TG-DTA,XRD, Raman, SEM, TEM and BET etc. By changing the reaction time, the calcinationtemperature, the type and amount of the templating agent to determine the bestpreparation process for preparing a porous nano-ZnTiO3materials: The concentration ofCTAB template was23.02g/L;3,4-dihydroxybenzoic acid was acted as the bridgingagent; the reaction time was1hrs; the calcination temperature was550℃. The solventwas made by the mixture of n-octane and hexane and cyclohexane and toluene having aweight ratio of60%:5%:20%:15%, thiophene was the desulfurization object; configurethe analog oil. Making A research and evaluation on the adsorption desulfurizationperformance of porous nano-ZnTiO3materials.In this paper, to further improve the adsorption desulfurization performance ofporous nano-ZnTiO3materials, ZnTiO3/Ni composite nanomaterials were also made byusing the method of chemical plating. In this experiment, NiSO4was acted as the nickelsource and porous nano-ZnTiO3materials were acted as matrix. Its structure, composition and morphology were analyzed by the characterization methods such asFTIR, TG-DTA, XRD, Raman, SEM, TEM and BET etc. By changing the bathconcentration, reaction time and reaction temperature to determine the best preparationprocess for preparing ZnTiO3/Ni composite nanomaterials: the bath concentration ofNiSO4was15g/L; the reaction time of electroless plating was10min; the reactiontemperature was80℃. Then carrying a heat treatment under300℃with the preparedZnTiO3/Ni nano-composites materials in the conditions of N2atmosphere. Finally, usingthe simulate oil configured as the target of research, carrying an experimental studyabout the adsorption desulfurization of ZnTiO3/Ni composite nanomaterials todetermine the desulfurization rate of ZnTiO3/Ni composite nanomaterials after heattreatment reached98.84%compared to92.63%that haven’t a heat treatment.Experiment alstudies by ZnTiO3/Ni composite nanomaterials recycling desulfurizationshowed, ZnTiO3/Ni composite nanomaterials have good recycling capacity.