磷酸铝分子筛中骨架扭曲度与杂原子取代的关系
CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE（2013）
Abstract
采用计算机模拟方法对AFI,AEL,ATO,SBS,SBE,SBT,JRY和MAPO-CJ69等磷酸铝分子筛的骨架进行了几何优化,通过计算这些骨架结构中A1O4和AlP4四面体的A1-O,O-O,Al-P和p-p各键长的标准偏差及AlO4和AlP4四面体的连续形状度量(CShM),得到了这些分子筛骨架中四面体的扭曲度.通过对比发现,具有较大扭曲度的骨架在实验中往往需要引入杂原子以稳定整个结构,且杂原子优先进入骨架中扭曲度大的位置；而扭曲度较小的骨架结构无需引入杂原子就能够合成出来.
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Key words
Aluminophosphate molecular sieve,Distortion,Standard deviation,Continuous shape measure (CShM),Heteroatom-substitution
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