摘要
对Ｘ、Ｙ、Ｍ、ＺＳＭ－ ５、Ｓｉｌｉｃａｌｉｔｅ－Ⅰ沸石分子筛选择吸附焦化苯中噻吩的性能进行了考察，结果表明：ＺＳＭ－ ５ 和Ｓｉｌｉｃａｌｉｔｅ－Ⅰ分子筛具有明显的选择吸附性能。通过对ＺＳＭ－ ５ 分子筛进行Ｃｕ２ ＋ 离子交换及表面硅烷化处理改性，能在一定程度上提高选择吸附性能，并认为沸石分子筛选择吸附性能与表面羟基（ＳｉＯＨ、ＳｉＯＨＡｌ） 的酸性及沸石孔道特征有密切的关系。
Removal ofthiophene from coke - oven benzene can be done by selective adsorption on zeolites as adsorbents- Aseries ofzeolites (X,Y, Mordenite ,ZSM- 5 ,Sili calite - Ⅰ) were studied in this paper- Thiophene can be selectively adsorbed on ZSM- 5 and Silicalite- Ⅰzeolites- HZSM- 5 zeolite was modified by Cu2+ ion - exchange and de position of Si(OC2H5)4 ,and its adsorption capacityforthiopheneincreased remarkably- At adsorption condition of 80 ℃, WHSV1-5h- 1 and air - pressure the coke - oven benzene contained 180mg/Lthiophene was passed through a fixed - bed packed with Si- CuZSM- 5 (13-6w % - SiO2) adsorbentfor240minto give S-free benzene- The reasonsforthe ex cellent adsorption selectivities observed in the thiophene/benzene adsorption on modified ZSM- 5 zeolite were discussed-
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
1999年第5期476-480,共5页
Journal of Fuel Chemistry and Technology
基金
大连理工大学碳资源综合利用开放实验室科学研究基金
关键词
沸石
选择吸附
焦化苯
噻吩
脱硫
分子筛
炼焦
zeolite ,coke - oven benzene ,selective adsorption ,thiophene ,desulfur ization
