Abstract: Niobic acid/SBA-15 molecular sieve was prepared by impregnation method, and characterized by XRD and BET. The results show specific surface area, pore volume and pore diameters of the sample slightly decreased; however, mesoporous structure was well preserved. Its desulfurization performance from model oil was studied by static adsorption method. The results show that the sulfur removal rate can reach 31.30% and saturation adsorption capacity was 599 μg/g under the following optimum conditions: niobic acid/support 10wt%, adsorption temperature 120 ℃, time 30 min and catalyst/oil weight ratio 1∶20.

Key words: 　Nioic acid , Molecular sieve , Adsorption desulfurization

摘要： 　    采用后合成法制备Ｎｂ－ＳＢＡ－１５分子筛吸附剂，经Ｘ－射线衍射（ＸＲＤ）、Ｎ２吸附－脱附测试手段表征，结果表明，Ｎｂ－ＳＢＡ－１５虽表面积、孔容、孔径略有下降，但仍保持良好的介孔结构。以其为吸附剂，模拟油为原料，采用静态吸附法进行脱硫实验。结果表明，最佳脱硫条件为：铌酸与载体质量比１∶１０，吸附时间３０ｍｉｎ，吸附温度１２０℃，剂油质量比１∶２０。在此条件下，脱硫率达３１．３０％，饱和吸附量５９９μｇ／ｇ。

关键词: 　铌酸 , 　分子筛 , 　吸附脱硫