燃料化学学报2017，Vol.45Issue(12)：1467-1472,6.
改性Y型分子筛对硫醇硫醚的吸附脱除研究
Study on thiol and thioether removal with modified Y zeolite
范跃超 1甄新平 1牛春革 1宋丽娟2
作者信息
- 1. 中石油克拉玛依石化有限责任公司, 新疆 克拉玛依 834000
- 2. 辽宁石油化工大学 石油化工催化科学与技术重点实验室,辽宁 抚顺 113001
- 折叠
摘要
Abstract
Samples of Cu ( I) Y, NiY and CeY were prepared by modifying a NaY type zeolite with a liquid ion-exchange method and characterized by means of XRD, ICP-MS, pyridine Py-FTIR, NH3-TPD and low temperature N2 adsorption-desorption. Use of micro coulombmeter WK-2D, sulfide luminescence detecting chromatography GC-SCD and fixed bed technology to evaluate the desulfurization performance of the samples for a 300 μg/g sulfur content model oil ( dipropyl sulfide, cyclohexanol mercaptan and 1-heptyl mercaptan are prepared with nonane, etc. ) and a hydrodesulfurization ( HDS) gasoline. Results show that Cu ( I) Y has good adsorption desulfurization performance on those different oils. In the liquid ion-exchange process, the modified Y zeoliteˊs surface acidity has greatly changed. The strong surface Bronsted ( B) acidity of modified Y zeolite has negative effects on adsorption desulfurization through catalyzing mercaptan and thioether to form bigger molecules, which cover the surface of Y zeolite and block the adsorption activity sites, resulting in lower sulfur adsorption capacity of the catalyst. The weak surface Lewis ( L ) acidity has positive effects on adsorption desulfurization.关键词
Y型分子筛/硫醇/硫醚/吸附/催化/表面酸性Key words
Y zeolite/mercaptan/sulfide/adsorption desulfurization/catalyze/surface acidity分类
石油、天然气工程引用本文复制引用
范跃超,甄新平,牛春革,宋丽娟..改性Y型分子筛对硫醇硫醚的吸附脱除研究[J].燃料化学学报,2017,45(12):1467-1472,6.
