【摘要】 <正> 气体分子在固体表面上的吸附以及催化剂的活性中心一直是人们感兴趣的问题,这对在分子水平上研究催化机理具有重要的意义.气体分子吸附到固体表面上以后,由于存在多种各向异性相互作用,分子运动受阻,得到的谱线介于固体谱和液体谱之间,为宽线谱.通过对宽线谱线型的分析、弛像时间及化学位移屏蔽张量的测量,可以在一定程度上反映吸附分更多还原

【Abstract】 A mag1c angle spinning system for sealed samples has been achieved with a speedfrom 1.5 to 4.2 kHz. Using this system, high-resolution ¹H spectra are obtainedfor H₂S and alcohols adsorbed on charcoal in sealed ampoules. For high coverage ofalcohols, the spectral lines are resolved very well, but for low coverage, the spectrallines cannot be separated completely. The details are discussed and the solution isanticipated.更多还原