石油化工高等学校学报

石油化工高等学校学报 ›› 2017, Vol. 30 ›› Issue (3): 9-14.DOI: 10.3969/j.issn.1006-396X.2017.03.002

• 石油化工 • 上一篇    下一篇

稀土离子半径对Y分子筛抗Ni性能的影响

杨 野1,秦玉才1,张 乐2,宋丽娟1,2   

  1. 1.辽宁石油化工大学辽宁省石油化工催化科学与技术重点实验室,辽宁抚顺113001;
    2.中国石油大学(华东)化学工程学院,山东青岛266580
  • 收稿日期:2017-02-20 修回日期:2017-03-08 出版日期:2017-06-20 发布日期:2017-06-30
  • 通讯作者: 宋丽娟(1962-),女,博士,教授,博士生导师,从事以沸石分子筛等多孔材料为催化剂或吸附剂的反应及分离过程的应用及基础理论研究;E-mail:lsong56@263.net
  • 作者简介:杨野(1992-),男,硕士研究生,从事多孔催化材料相关研究;E-mail:498375437@qq.com
  • 基金资助:
    国家自然科学基金(21376114、U1662135)

Effect of Rare EarthIon Radiuson Nickel Tolerance of Y Zeolites#br#  

  1. 1.Key Laboratory of Petrochemical Catalytic Science and Technology,Liaoning Shihua University,Fushun Liaoning 113001, China;
    2.College of Chemistry and Chemical Engineering,China University of Petroleum  (EastChina),Qingdao Shandong 266580,China
  • Received:2017-02-20 Revised:2017-03-08 Published:2017-06-20 Online:2017-06-30

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摘要：         采用液相离子交换法制备了CeY、NdY、HoY 分子筛,并通过Mitchell等体积浸渍法对其进行Ni污染。运用氨气程序升温脱附(NH3-TPD)和原位吡啶红外光谱技术(InsituPy-FTIR)对其酸性质进行表征,采用微反应活性评价装置考察其抗Ni性能。结果表明,随着稀土离子半径的减小,稀土改性Y 型分子筛抑制Ni破坏其B酸中心能力逐渐增强。进一步将酸性关联活性后发现,经Ni污染后REY 分子筛的催化裂化微反应活性亦随着稀土离子半径的减小而逐渐增强,且反应液相产物中汽油质量分数随Ni/REY分子筛催化剂中RE离子半径的减小而逐渐增加。RE离子半径越小的REY分子筛抗Ni性能越好。

关键词: REY,   ,  离子半径,   ,  酸性,   ,  微反应活性,   ,  抗Ni性能

Abstract: CeY, NdY and HoY zeolites were prepared by liquid phase ion exchange method, and the Ni contamination was carried out by Mitchell impregnation method. The acid properties of the catalysts were characterized by ammonia temperature programmed desorption （NH3-TPD） and in situ pyridine infrared spectroscopy. The results indicate that REY zeolite has a better ability to inhibit the destruction of the Brnsted （B） acid sites with the decrease of the radius of rare earth ions. Further acidity and activity were associated, it was found that the catalytic cracking activity of REY zeolite was increased with the decrease of the radius of RE. And the content of gasoline in the reaction liquid phase increased with the decrease of the radius of RE ions in Ni/REY zeolite catalyst. So the smaller the RE ionic radius, the better the nickel tolerance of REY zeolite.

Key words: REY,    , Ionic radius,    , Acidity,    , MAT,    , Nickel tolerance

引用本文

杨 野,秦玉才,张 乐,宋丽娟. 稀土离子半径对Y分子筛抗Ni性能的影响[J]. 石油化工高等学校学报, 2017, 30(3): 9-14.

Yang Ye,Qin Yucai,Zhang Le,Song Lijuan. Effect of Rare EarthIon Radiuson Nickel Tolerance of Y Zeolites#br#  [J]. Journal of Petrochemical Universities, 2017, 30(3): 9-14.

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