On Chloro-fluoro-Carbons adsorbed on Zeolite by the NMR Measurements

为了了解氟化氢气体(CFC22；CHClF_2和CFC23；CHF_3)在人工合成NaY沸石孔纳米空间中的吸附行为，进行了氟化氢气体的吸附和氟化氢分子中~1H和~1H；19&gt；F原子的核磁共振测量。首先，在获得H-和F-核磁共振信号的吸附量和化学位移的情况下，(1)提出了氟分子在沸石上的吸附结构模型；其次，通过考察受沸石晶体中杂质铁原子(360ppm)强烈影响的H-和F-核磁共振信号的驰豫和关联时间，能够解释被吸附的氟分子的运动。由此得到了(2)至(7)项的估计；(2)Fe原子与F原子之间的结构模型，(3)Fe原子与F或H原子在F分子中的驰豫机理，(4)Fe原子与H或F原子之间的距离，(5)Fe原子与H、F原子之间的关联次数，(6)F分子在沸石孔中的吸附寿命，(7)F气体在沸石孔中的平均扩散路径。最后，通过HY或NaY分子筛对F原子和F原子的吸附实验，获得了以下结果：(1)成功地测量了H-和F-核磁共振信号。(2)NaY分子筛上的氟-23气体吸附问题已被接受(在印刷中)。(3)将提交下一期氟-22。(4)利用核磁共振的反转恢复方法，获得了氟分子的扩散系数。

In order to know the adsorptive behaviors of flon gases (CFC22 ; CHClF_2 and CFC23 ; CHF_3) in nano space of synthetic NaY zeolitic pores, adsorptions of flon gases and NMR measurements of ^1H and ^<19>F atoms in flon molecules were planed. First, when adsorptive amounts and chemical-shifts of H- and F-NMR signals were obtained,(1) the model of adsorptive structure of flon gases on zeolite was proposed.Next, from the examination of relaxation and correlation times obtained from H- and F-NMR signals strongly influenced by Fe atom as the impurity (360 ppm) in zeolitic crystals, the motion of adsorbed flon molecule was able to be explained. The estimations of following items from (2) to (7) were consequently obtained ;(2) the structure model arranged between Fe atom and flon molecule,(3) the relaxation mechanism between Fe atom and H or F atom in flon molecule,(4) the each nearest lengths between Fe atom and H or F atom in flon molecule,(5) the correlation times strongly influenced Fe magnetic field to H and F atoms,(6) the adsorbing life span of flon molecule in zeolitic pores,(7) the mean diffusing path of flon gas in zeoiitic pores.Finally, from the adsorptive experiments of flon 22 or 23 on HY or NaY zeolite, the following results have been obtained.(1) The successful measurements of H- and F-NMR signals have been obtained.(2) The issue of flon 23 gas adsorbed on NaY zeolite has been accepted (in press).(3) Next issue of flon 22 will be submitted.(4) The diffusion coefficient of flon molecule by using the inversion recovery method of NMR has been obtained.