摘要
以SBA-15介孔分子筛为载体,采用浸渍法制备了Nb-SBA-15介孔分子筛,采用X射线衍射、BET、Fourier变换红外光谱、热重–差热分析和吡啶吸附红外光谱分析等测试手段对其进行分析,用喹啉的十二烷溶液为模型化合物,采用静态吸附法在间歇式反应器中对其吸附脱氮性能进行评价。结果表明:Nb-SBA-15分子筛具有高度有序的二维六方介孔结构,并且具有一定的酸性,焙烧温度为300℃,铌酸负载量(质量比)为10%时,Nb-SBA-15具有最高的吸附脱氮率,为65.19%。
Nb-SBA-15 zeolite was synthesized with SBA-15 mesoporous zeolite as a carrier via the wetness impregnation. The sam- pie was characterized by X-ray diffraction, BET analysis, Fourier transform infrared, thermogravimetric-differential analysis and Py infrared spectra, respectively. The property of adsorptive denitrification of Nb-SBA-15 was evaluated with dodecane quinoline as a simulated oil via the static adsorption experiment in a batch-wise reactor. The results show that Nb-SBA-15 zeolite has a highly or- dered two-diemensional hexagonal mesoporous structure and some acidities. The denitrification rate of Nb-SBA-15 could reach 65.19% at the calcination temperature of 300 ℃ and the mass fraction of niobic acid loading of 10%.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2012年第11期1666-1670,共5页
Journal of The Chinese Ceramic Society
关键词
介孔分子筛
铌酸
吸附
碱性氮化物
mesoporous zeolite
niobium acid
adsorption
basic nitrogen compound
