Journal of Petrochemical Universities

Journal of Petrochemical Universities ›› 2015, Vol. 28 ›› Issue (2): 13-18.DOI: 10.3969/j.issn.1006-396X.2015.02.003

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Infrared Spectroscopy Study on Catalytic Conversion of Thiophene and Thiophane over Rare Ions Modified Y Zeolites

  

  1. (1.Key Laboratory of Petrochemical Catalytic Science and Technology, Liaoning Province, Liaoning Shihua University, Fushun Liaoning 113001, China; 2.College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao Shandong 266555, China)
  • Received:2014-09-22 Revised:2015-02-05 Published:2015-04-25 Online:2015-06-23

R EY对噻吩和四氢噻吩催化转化行为的红外光谱研究

张 畅1,  秦玉才1,  莫周胜2,  初春雨1,  张晓彤1,  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1 1 3 0 0 1;
    2. 中国石油大学( 华东) 化学工程学院, 山东青岛2 6 6 5 5 5)
  • 通讯作者: 宋丽娟( 1 9 6 2 - ) , 女, 博士, 教授, 从事新型催化材料及清洁油品生产新工艺研究; E - m a i l : l s o n g 5 6@2 6 3. n e t 。
  • 作者简介:张畅( 1 9 9 0 - ) , 女, 硕士研究生, 从事稀土改性分子筛降硫机理研究; E - m a i l : 8 2 1 5 1 5 6 9 5@q q. c o m。
  • 基金资助:
    国家自然基金资助项目( 2 1 0 7 6 1 0 0, 2 1 3 7 6 1 1 4) ; 中国石油天然气股份有限公司炼油催化剂重大专项( 1 0 - 0 1 A - 0 1 - 0 1 - 0) 。

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Abstract: Surface acidities of the Y zeolites(NaY, HY, LCeY and HRSY3) were characterized by temperatureprogrammed desorption of ammonia(NH3TPD) and in situ fourier transform Infrared Spectroscopy using pyridine as probe molecule (PyFTIR). The adsorption and catalytic transformation behaviors of sulfides on Y zeolites modified by rare ions were studied by in situ fourier transform Infrared Spectroscopy (in situ FTIR) technology using thiophene andthiophane as the probe molecules, respectively. The results indicated that thiophene molecules protonated upon the strong Brnsted acid sites of the zeolites at room temperature, then protonated products could further oligomerize. The synergy between L acid sites (included Ce species andnonframework aluminum species) and Brnsted (B) acid sites was favorable to oligomerization reaction of Thiophene, however, there were no reactions of thiophane over NaY, HY and REY. 

Key words: In situ FTIR,    ,  Rare ions,   ,  Modified Y zeolites,    ,  Sulfides,    ,  Catalytic conversion

摘要： 以 N a Y、 HY、 液相稀土 C e离子交换改性的 Y 分子筛(L - C e Y) 和稀土离子改性的超稳 Y 分子筛 ( HR S Y - 3) 为研究对象, 在氨气程序升温脱附( NH3 - T P D) 和吡啶吸附傅里叶变换红外光谱( P y - F T I R) 表征其酸性能 的基础上, 采用原位傅里叶变换红外光谱( I ns i t uF T I R) 技术以噻吩和四氢噻吩作为探针分子, 研究噻吩硫化物在稀 土离子改性的 Y型( R EY) 分子筛上的吸附及转化行为。结果表明, 室温条件下噻吩在分子筛强B酸中心作用下即 可发生质子化反应, 质子化的噻吩分子可进一步发生低聚反应, 且稀土物种和非骨架铝有关的L酸中心与B酸的协 同作用促进质子化噻吩向低聚物的转化; 而四氢噻吩在 N a Y、 HY及R EY型分子筛上均无催化反应发生。

关键词: 原位红外,  , 稀土离子, 改性 Y型分子筛, 硫化物, 催化转化

Cite this article

Zhang Chang,Qin Yucai,Mo Zhousheng,et al. Infrared Spectroscopy Study on Catalytic Conversion of Thiophene and Thiophane over Rare Ions Modified Y Zeolites [J]. Journal of Petrochemical Universities, 2015, 28(2): 13-18.

张 畅, 秦玉才, 莫周胜, 初春雨, 张晓彤, 宋丽娟. R EY对噻吩和四氢噻吩催化转化行为的红外光谱研究[J]. 石油化工高等学校学报, 2015, 28(2): 13-18.

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