六氟硅酸铵后处理对H-ZSM-5分子筛酸性影响的固体NMR研究

王永祥,王强,徐君,夏清华,邓风

The Effects of Ammonium Hexafluorosilicate Post-Treatment on the Acidity of H-ZSM-5 Zeolite Studied by Solid-State NMR Spectroscopy

Yong-xiang WANG,Qiang WANG,Jun XU,Qing-hua XIA,Feng DENG

表1 由2D 27Al MQ MAS NMR实验（图 2）获得的NMR参数

Table 1 NMR parameters obtained from the 2D 27Al MQ MAS NMR experiments in Fig. 2

Position δF2a δF1a δCSb PQ/MHzc AlIV-1 54.4 56.7 55.8 1.6 AlIV-2 40.7 66.9 57.2 5.5 AlVI -0.8 0.9 0.3 1.4