Journal of Petrochemical Universities

Journal of Petrochemical Universities ›› 2010, Vol. 23 ›› Issue (2): 21-24.

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Adsorption and Desorption of Thiophene Vapour on NiY

  

  1. 1.College of Chemistry & Chemical Engineering, China University of Petroleum (East China), Dongying Shandong 257061, P. R. China; 
    2. Liaoning Key Laboratory of Petrochemical Engineering,Liaoning Shihua University, Fushun Liaoning  113001, P. R. China
  • Received:2010-01-06 Published:2010-06-25 Online:2010-06-25

噻吩在NiY上吸附与脱附行为的研究

刘道胜1,2,宋丽娟1,2,鞠秀芳2,孙兆林1,2*   

  1. 1.中国石油大学(华东)化学化工学院, 山东东营257061;
    2 .辽宁石油化工大学辽宁石油化工重点实验室, 辽宁抚顺113001
  • 作者简介:刘道胜(1976 -), 男, 湖北江陵县, 讲师, 在读博士
  • 基金资助:
    国家自然科学基金资助(20776064)

Abstract:

The curves of FT-IR, adsorption isotherms and TPD were carried out by FT-IR and IGA(intelligent gravimetric analyzer). The spectrum of FT-IR shows that there is only physical adsoption exsits for thiophene on NaY because of no new peaks appeared in the FT-IR curves, but both physical and chemical adsoption exsit on NiY due to the peaks of 1 391 cm-1 and 1 440 cm-1 in the curves which attributable to π complexation and S-M interaction. The adsorption isotherms confirm that the adsorption quantity of thiophene on NaY decreases with temperaure increasing which consistent with the physical adsorption; but the other is different, the adsotion quantity of thiophene at 302 K and 335 K is equivalent and decreases at 373 K which indicated that the different interaction model between adsorbent and adsorbate on NiY. The spectrum of TPD shows that there are two kinds of active site existting on NiY surface for thiophene, which responsible for the different chemical interation. 
 

Key words:

摘要:

利用傅里叶红外光谱(FT -IR)仪与智能重量分析仪(IGA)测定了噻吩在NaY 和NiY 上的红外谱图
(FT -IR)、吸附等温线以及TPD 谱图。FT -IR 谱图表明, 噻吩在NaY 上无新的特征峰, 可归属为物理吸附;而噻
吩在NiY 上于1 391 cm -1 和1 440 cm -1 出现的特征峰, 表明噻吩与NiY 间存在π 络合和S -M 键, 因此在NiY 上既
有物理又有化学吸附。吸附等温线表明噻吩在NaY 上的饱和吸附量随着温度的升高而下降, 与物理吸附特征吻合;
在NiY 上其302 K 和335 K 时吸附量相等, 373 K 时吸附量略有下降, 表明噻吩在NiY 上的作用方式。TPD 谱图揭
示了噻吩在NiY 上存在两种活性中心, 分别对应于不同的化学作用模式

关键词: 噻吩 , 吸附 , 程序升温脱附

Cite this article

LIU Dao-sheng, SONG Li-juan, JU Xiu-fang,et al. Adsorption and Desorption of Thiophene Vapour on NiY[J]. Journal of Petrochemical Universities, 2010, 23(2): 21-24.

刘道胜,宋丽娟,鞠秀芳,孙兆林. 噻吩在NiY上吸附与脱附行为的研究[J]. 石油化工高等学校学报, 2010, 23(2): 21-24.

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