中文摘要：

提出利用S-RESIDOR（Symmetry-based Resonance Echo Saturation Irradiation DOubleResonance）方法测量^1H-^27Al偶极偶合常数.通过理论模拟,讨论了四极作用常数、饱和照射脉冲功率、照射时间对^1H/^27Al S-RESIDOR实验的影响.发现四极作用常数对^1H/^27 Al S-RESIDOR偶极去相曲线影响较小,中等强度的饱和照射功率即能满足实验要求.高转速下,在氢型丝光沸石上进行了^1H/^27Al S-RESIDOR实验,测量得到Brnsted酸位上的1 H与骨架上27 Al的偶极偶合常数为874Hz.

英文摘要：

A Symmetry-based Resonance Echo Saturation Irradiation DOuble Resonance （S-RESIDOR） method is proposed for measuring ^1H-^27Al dipolar coupling constant in zeolite. The influence of ^27Al Cq value, vl （^27Al） and the saturation pulse length of ^27Al channel on the ^1H/^27Al S-RESIDOR experiment were discussed. Numerical simulations indicate that ^1H/^27 Al S-RESIDOR dephasing curves are insensitive to the ^27Al quadru-pole coupling constant, and moderate RF field can fulfill the experiment requirements. The ^1H/^27Al S-RESIDOR experiment was performed on H-mordenite under fast spin- ning speed, and the measured ^1H/^27Al dipolar coupling constant is 874 Hz.