高等学校化学学报

高等学校化学学报 ›› 1989, Vol. 10 ›› Issue (3): 317.

• 研究简报 • 上一篇    下一篇

13CNMR研究吡啶及2,6-二甲基吡啶在SiO2、Al2O3、NaY及HY上的吸附

盛太成1, 徐宗玉1, 赵焕绥2, 郝树萱2   

  1. 1. 山东大学化学系;
    2. 山东大学实验中心
  • 收稿日期:1987-08-31 出版日期:1989-03-24 发布日期:1989-03-24
  • 通讯作者: 盛太成
  • 基金资助:

    国家自然科学基金

Studies on the Adsorption of Pyridine and 2,6-Dimethylpyri-dine on SiO2, Al2O3, NaY and HY by 13CNMR

Sheng Taicheng1, Xu Zongyu1, Zhao Huansui2, Hao Shuxuan2   

  1. Shandong University, Jinan
  • Received:1987-08-31 Online:1989-03-24 Published:1989-03-24

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摘要： 用NMR方法研究固体表面吸附可获得吸附分子活动性的动态信息,加深对吸附分子与固体表面相互作用力性质的了解。13CNMR谱虽灵敏度低于1H谱,但分辨率优于1H谱,对吸附态分子可得中等分辨率的谱图。本文用13CNMR方法研究吡啶(Py)和2,6-二甲基吡啶(DMPy)在SiO2、Al2O3、NaY及HY上的吸附。比较NMR谱线的宽度,可知在不同吸附体系中处于吸附态的分子具有不同的活动性。推测了DMPy吸附时空间受阻情况及与表面相互作用力的性质。

关键词: 13CNMR, 吸附, 吡啶, 2, 6-二甲基吡啶

Abstract: The dynamic information about adsorbed molecules on solid surface can be provided by using 13CNMR spectrometry. In the adsorption systems used, the line broadening of the spectrum is mainly due to the dipole-dipole interaction between adsorbed molecues, it is therefore clear that the comparison of linewidth between different adsorbed systems provide a qualitative measure for the mobility of adsorbed species. In the present paper the . adsorption behavior of pyridine and 2,6-dimethylpyridine on the surface of SiO2, A12O3, NaY, HYhas been demonstrated by this technique. The nature of gas-solid interaction and the configuration of the adsorbed molecules were also discussed.

Key words: 13CNMR, Adsorption, Pyridine, 2,6-Dimethylpyridine

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