NaY zeolite was modified with oxalic acid, and Ce(IV)Y(1) zeolite was obtained via liquid phase ion exchange between the modified NaY zeolite and cerium nitrate. The Ce(IV)Y(2) zeolite was obtained via liquid phase io...NaY zeolite was modified with oxalic acid, and Ce(IV)Y(1) zeolite was obtained via liquid phase ion exchange between the modified NaY zeolite and cerium nitrate. The Ce(IV)Y(2) zeolite was obtained via liquid phase ion exchange between NaY zeolite and cerium nitrate. The performance of two Y zeolites [Ce(IV)Y(1) and Ce(IV)Y(2)] was compared through static selective adsorptive desulfurization of FCC gasoline at room temperature and normal pressure. The sulfur compounds and contents of the FCC gasoline were analyzed by microcoulometry and GC-SCD chromatogram. The results showed that the effect of adsorptive desulfurization of FCC gasoline achieved by Ce(IV)Y(1) zeolite was better than that of Ce(IV)Y(2) zeolite. The rate for adsorptive desulfurization of FCC gasoline by Ce(IV)Y(1) zeolite and Ce(IV)Y(2) zeolite was 85.0% and 62.4%, respectively. The Ce(IV)Y(1) zeolite could adsorb DMTs, which could not be adsorbed by Ce(IV)Y(2) zeolite. The rate of regeneration of extruded Ce(IV)Y(1)zeolite was 95.5%.展开更多
Ce （III） Y zeolite was prepared by liquid-phase ion-exchange of NaY with 0.1 mol/L Ce（NO3）3 solution at 100℃ for 4 h. After calcining the resultant Ce （III） Y zeolite at 550 ℃ in air, Ce （IV） Y zeolite was o...Ce （III） Y zeolite was prepared by liquid-phase ion-exchange of NaY with 0.1 mol/L Ce（NO3）3 solution at 100℃ for 4 h. After calcining the resultant Ce （III） Y zeolite at 550 ℃ in air, Ce （IV） Y zeolite was obtained. Desulfurization of FCC gasoline was studied by selective adsorption with Ce （IV） Y zeolite. The results showed that Ce （IV） Y zeolite can remove thiophene via 0-complexation directly, while thiophene and Ce （IV） can form stable chemical bonds （sulfur-metal bonds） that can enhance the capability of Ce （IV） Y zeolite for adsorption of thiophene.展开更多
基金the National Natural Sci-ence Foundation of China (No.20476042 and No.20776064) for the financial support.
文摘NaY zeolite was modified with oxalic acid, and Ce(IV)Y(1) zeolite was obtained via liquid phase ion exchange between the modified NaY zeolite and cerium nitrate. The Ce(IV)Y(2) zeolite was obtained via liquid phase ion exchange between NaY zeolite and cerium nitrate. The performance of two Y zeolites [Ce(IV)Y(1) and Ce(IV)Y(2)] was compared through static selective adsorptive desulfurization of FCC gasoline at room temperature and normal pressure. The sulfur compounds and contents of the FCC gasoline were analyzed by microcoulometry and GC-SCD chromatogram. The results showed that the effect of adsorptive desulfurization of FCC gasoline achieved by Ce(IV)Y(1) zeolite was better than that of Ce(IV)Y(2) zeolite. The rate for adsorptive desulfurization of FCC gasoline by Ce(IV)Y(1) zeolite and Ce(IV)Y(2) zeolite was 85.0% and 62.4%, respectively. The Ce(IV)Y(1) zeolite could adsorb DMTs, which could not be adsorbed by Ce(IV)Y(2) zeolite. The rate of regeneration of extruded Ce(IV)Y(1)zeolite was 95.5%.
文摘Ce （III） Y zeolite was prepared by liquid-phase ion-exchange of NaY with 0.1 mol/L Ce（NO3）3 solution at 100℃ for 4 h. After calcining the resultant Ce （III） Y zeolite at 550 ℃ in air, Ce （IV） Y zeolite was obtained. Desulfurization of FCC gasoline was studied by selective adsorption with Ce （IV） Y zeolite. The results showed that Ce （IV） Y zeolite can remove thiophene via 0-complexation directly, while thiophene and Ce （IV） can form stable chemical bonds （sulfur-metal bonds） that can enhance the capability of Ce （IV） Y zeolite for adsorption of thiophene.
