STUDY ON THE PROPERTIES OF ATTAPULGITE DESULFURIZER AND THE EFFECT OF DESULFURIZATION

Attapulgite desulfurizer was prepared by impregnating technique,in which the transitional metal Fe series and Ag series compounds were used as active components and the desulfurizer was activated in the condition of nitrogen.The optimum conditions of the preparation and removal of thiophene in model gasoline for desulfurizer were obtained by orthogonal method.It was showed that 12% Fe series compound and 2% Ag series compound as active component,under the condition of nitrogen at 300℃calcination for 4h,the thiophene mass fraction in model gasoline was reduced from 556×10-6 to 106×10-6 under normal temperature and pressure,that the desulfurization rate was 80.9%.The active center of iron oxide and silver oxides were propitious to combine theπelectronic bond of thiophene.