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固体核磁共振结合密度泛函理论计算研究SSZ-39分子筛的钠离子落位与铝分布
陈翰迪,孔海宇,赵侦超,张维萍*()
Exploring the Na+ Locations and Al Distributions in SSZ-39 Zeolite by Solid-State NMR Spectroscopy and DFT Calculations
Han-di CHEN,Hai-yu KONG,Zhen-chao ZHAO,Wei-ping ZHANG*()

图5. DFT方法优化的模型和其相对能量,以及不同铝分布的23Na NMR参数

Fig.5. Models optimized by DFT calculations and the corresponding relative energies, and 23Na NMR parameters of different Al substitutions