摘要
采用液相离子交换法制备了Cu+-Y分子筛和稀土改性Cu+-Y分子筛,以正己烷为溶剂,噻吩和苯分别作为硫化物和芳烃的代表形成模拟汽油体系,考察了它们的脱硫效果。结果表明,稀土增强了Cu+-Y分子筛对噻吩的吸附质量比。对只含噻吩的1号模拟汽油,稀土改性Cu+-Y分子筛对噻吩的穿透吸附质量比Cu+-Y分子筛增加了9.5%,稀土增强了Cu+-Y分子筛对噻吩的选择性;对含苯的2号模拟汽油,稀土改性Cu+-Y分子筛比Cu+-Y分子筛吸附噻吩的质量比增加了5.6%。稀土改性Cu+-Y分子筛脱硫剂易于再生,再生后仍有很好的吸附能力,可重复使用。
Cu ^＋-Y zeolite and Cu ^＋-Y zeolite loaded with rare earth were prepared by liquid-phase ion exchange, and their adsorption effects were investigated with the model gasoline system composed of n-hexane as solvent, thiophene as sulfide and benzene as arene. The results show that the rare earth enhances the adsorptive mass ratio of Cu ^＋-Y zeolite to thiophene. For No. 1 model gasoline containing thiophene only, the breakthrough adsorption mass ratio of thiophene to Cu ^＋-Y zeolite loaded with rare earth increases by 9.5% compared with Cu ^＋-Y zeolite, and the rare earth strengthens the selectivity of Cu ^＋-Y zeolite ; for No. 2 model gasoline containing thiophene and benzene, the breakthrough adsorption mass ratio of thiophene to Cu ^＋-Y zeolite loaded with rare earth increases by 5.6% compared with Cu ^＋-Y zeolite. capacity after regeneration, so it can The desulferization adsorbent is easy to regenerate and with a good adsorptive be reused.
出处
《化学工程》
CAS
CSCD
北大核心
2009年第10期1-4,共4页
Chemical Engineering(China)
基金
国家自然科学基金资助项目(20436030)
江苏省重点实验室开放课题基金项目(KIS03017)
关键词
吸附脱硫
稀土
噻吩
固定床
adsorptive desulfurization
rare earth
thiophene
fixed-bed
