采用水解法合成了核壳型Fe₃O₄@SiO₂载体，用等体积浸渍法在磁性Fe₃O₄@SiO₂载体表面负载CuCl₂，得到Fe₃O₄@SiO₂-Cu磁性纳米粒子吸附剂。采用XRD、TEM、FT-IR、XPS、N₂吸附-脱附和振动样品强磁计（VSM）等表征手段对制备的吸附剂进行表征，考察了吸附剂对模型汽油中不同硫化物的脱硫性能。结果表明，核壳型Fe₃O₄@SiO₂载体的比表面积为246.5 m²/g，同时饱和磁强度为44.6 emu/g。负载铜离子后，Fe₃O₄@SiO₂-Cu的饱和磁强度为43.9 emu/g。Fe₃O₄@SiO₂-Cu吸附剂可有效吸附噻吩类硫化物，硫容可达1.42 mg（S）/g（吸附剂）。采用先醇洗后焙烧的方法对失活吸附剂进行再生，吸附剂循环使用5次后仍能保持良好的再生稳定性。

Magnetic core-shell type Fe₃O₄@SiO₂ carrier is synthesized by hydrolysis method.Fe₃O₄@SiO₂-Cu magnetic nanoparticles adsorbent is prepared by loading CuCl₂ on the surface of magnetic Fe₃O₄@SiO₂ carrier through equal volume impregnation method.XRD,TEM,FT-IR,XPS,N₂ adsorption-desorption and VSM are used to analyze the characteristics of the adsorbent.And the desulfurization performances of the absorbent against different sulfides in model gasoline are investigated.The results show the specific surface area and the saturated magnetic strength of core-shell Fe₃O₄@SiO₂ carrier are 246.5 m²·g^-1 and 44.6 emu·g^-1,respectively.After loading copper ions,the saturated magnetic strength of Fe₃O₄@SiO₂-Cu reaches 43.9 emu·g^-1.Fe₃O₄@SiO₂-Cu adsorbent can effectively adsorb thiophene sulfide,with sulfur capacity up to 1.42 mg of sulfur per gram adsorbent.The deactivated adsorbent can be regenerated by the method of alcohol-washing and roasting.The absorbent remains good regenerative stability after 5 times recycling.

张言斌(1991-),男,硕士,主要从事清洁油品生产的研究,623489755@qq.com