Heteroatomic mesoporous Ce-MCM-41 molecular sieve was synthesized by using hydrothermal synthesis method with cetyltrimethy ammoniumb romide (CTMABr) as template, cerium chloride as cerium source and sodium silicate as silica source.X-ray diffraction ( XRD) and infrared sp ectru m (FT-IR) re sults indicate that the well-orde red meso-porous structure was obtained when the Ce/Si mol ar ratioi s less than 0.04;Ce was incorporat ed intot he fra mework of MCM-41.Nitrogen physisorption measurements indicate that the average pore diameters of MCM-41 and Ce-MCM-41 are 2.82 and 2.46 nm, with pore vo lumes of 0.762 1 and 0.689 4 m3 /g and BE T surface areas of 986.42 and756 .8 m2 /g , respectively.Dimethy l sulfide with a moleculars ize of 0.464 8 nm can easily enter the meso-scale pores of MCM-41 and Ce-MCM-41.NH3-TPD results illustrate that the acidity of Ce-MCM-41 is stronger than that of MCM-41.As a result, for the adsorptive removal of dimethyl sulfide from nitrogen with a dimethyl sulfide content of58 μg/g, the desulfurization capacity of Ce-MCM-41 is 7.52 mg(S) /g, h igher than that of MCM-41 (4.57 mg(S) /g).Furthermore, both MCM-41 and Ce-MCM-41 molecular sieves could be easily regenerated after adsorption of dimethyl sulfide; the desulfurization capacity can be recovered up to 80% of the original capacity after regenerated for three times.%以十六烷基三甲基溴化铵为模板剂，正硅酸乙酯（TEOS）为硅源，硝酸铈为铈源，采用水热法合成了杂原子介孔分子筛 Ce－MCM－41。 XRD和 FT－IR 表征结果表明，当加入的 Ce／Si 物质的量比小于0．04时合成了规整有序的介孔结构，并将 Ce原子引入到 MCM－41骨架中。 N2吸附－脱附测试获得 MCM－41和 Ce－MCM－41（Ce／Si 物质的量比为0．04）的平均孔径分别为2．82和2．46 nm，孔容分别为0．762 1和 0．6894 m3／g，BET 比表面积分别为986．42和 756．8 m2／g。 NH3－TPD 表征结果表明， Ce－MCM－41的酸性要明显强于 MCM－41，但两种分子筛的酸性均较弱。利用合成的 MCM－41和 Ce－MCM－41吸附脱除甲硫醚浓度为58μg（甲硫醚）／g 的甲硫醚／氮气混合气中的甲硫醚。甲硫醚分子尺寸的模拟结果为0．4648 nm，可以很容易地进入分子筛的介孔孔道中。由于C e－MCM－41分子筛具有较多的酸量，其硫吸附容量7．52 mg（S）／g 明显高于 MCM－41的4．57 mg（S）／g。 MCM－41和 Ce－MCM－41都具有较好的再生性能，再生3次后硫吸附容量仍可恢复到初始容量的80％，分别为3．52和 5．86 mg（S）／g。
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