燃料化学学报2018，Vol.46Issue(4)：451-458,8.
CuNaY分子筛的有效吸附位与其脱硫性能的关联性研究
Insight into the correlation between the effective adsorption sites and adsorption desulfurization performance of CuNaY zeolite
摘要
Abstract
A series of CuNaY zeolites with different Cu loadings were prepared from NaY by liquid-phase ion exchange (LPIE) method. The microstructure and textural properties of CuNaY zeolites were characterized by XRD and N2sorption and their adsorption desulfurization performance were evaluated with a model oil containing thiophene by the dynamic adsorption method. Combined with the Py-FTIR and NH3-TPD methods,the amounts of surface acid sites and effective Cu+species were determined quantitatively and a correlation between the effective adsorption sites and adsorption desulfurization performance of CuNaY zeolite towards thiophene was then established. The results revealed that the surface acidity and the active copper species in Y zeolite can be regulated effectively by controlling the copper loading;an adsorbent provided with abundant effective adsorption sites and excellent adsorption desulfurization performance can be obtained by loading appropriate amount of copper. On the contrary, an excessively high copper loading may promote the formation of polymeric copper species in the cavity of Y zeolite,which leads to a decrease in the number of effective adsorption sites as well as a decrease in the adsorption capacity of CuNaY zeolite towards thiophene.关键词
CuNaY分子筛/吸附位/Cu负载量/吸附脱硫Key words
CuNaY zeolite/adsorption site/copper loading/adsorption desulfurization分类
能源科技引用本文复制引用
丁润东,祖运,周传行,王焕,莫周胜,秦玉才,孙兆林,宋丽娟..CuNaY分子筛的有效吸附位与其脱硫性能的关联性研究[J].燃料化学学报,2018,46(4):451-458,8.基金项目
The project was supported by the National Natural Science Foundation of China(U1662135,21376114),Liaoning Province,PhD Research Initiated Fund Project(201601318)and Major Program of Petroleum Refining of Catalyst of Petro China Company Limited.国家自然科学基金(U1662135,21376114),辽宁省博士科研启动基金(201601318)和中国石油天然气股份有限公司炼油催化剂重大专项课题资助 （U1662135,21376114）
