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1,2,王强2,*(
),徐君2,夏清华1,*(),邓风2,*()
),徐君2,夏清华1,*(),邓风2,*()
The Effects of Ammonium Hexafluorosilicate Post-Treatment on the Acidity of H-ZSM-5 Zeolite Studied by Solid-State NMR Spectroscopy
Yong-xiang WANG1,2,Qiang WANG2,*(),Jun XU2,Qing-hua XIA1,*(),Feng DENG2,*()
),Jun XU2,Qing-hua XIA1,*(),Feng DENG2,*()
图3. 脱水状态的(a) parent-H-ZSM-5和(b) AHFS-H-ZSM-5的1D单脉冲1H MAS NMR谱图.括号中的百分比代表以parent-H-ZSM-5的δH 4.0处Brønsted酸的信号进行归一化的相对积分面积.
Fig.3. 1D single-pulse 1H MAS NMR spectra of dehydrated (a) parent-H-ZSM-5, and (b) AHFS-H-ZSM-5. The percentage values in parentheses represent the relative area integrals normalized to the Brønsted acid signal at δH 4.0 of parent-H-ZSM-5
