Structural Collapse or Expansion of the Hydro‐Sodalite Series Na8[AlSiO4]6(OH)2·nH2O and Na6[AlSiO4]6·nH2O Upon Dehydratation
Structural Collapse or Expansion of the Hydro‐Sodalite Series Na8[AlSiO4]6(OH)2·nH2O and Na6[AlSiO4]6·nH2O Upon Dehydratation
复制标题
水方钠石系列 Na8[AlSiO4]6(OH)2·nH2O 和 Na6[AlSiO4]6·nH2O 脱水时的结构塌陷或膨胀
DOI：
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发表时间：
1986
期刊：
影响因子：
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通讯作者：
S. Luger
中科院分区：
文献类型：
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作者：
J. Felsche;S. Luger
在高温（300-900 K）下的膨胀过程中，两个端元系列的水方钠岩表现出不同的结构膨胀特征。Na_6 [AlSiO_4]_6·nH_2O系列在失去0 < n ≤ 8H_2O时所观察到的晶胞体积的异常膨胀与相应方钠石结构的非骨架氧原子和骨架氧原子之间的重要氢键系统的破坏有关。碱性方钠石Na 8 [AlSiO 4]6（OH）2 ·nH 2 O在失去0 < n ≤ 4 H2O时的晶胞收缩，可以从非骨架组分的空间填充和钠、氧、氢原子间的某些特殊立体化学特征来理解。
The two end-member series of hydro-sodalites show different structural expansion characteristics during dehydratation at elevated temperatures (300–900 K). The anomalous expansion in cell volume which is observed for series Na6[AlSiO4]6 · nH2O upon loss of 0 < n ≤ 8 H2O is correlated to the destruction of the significant hydrogen bonding system between non-framework and framework oxygen atoms of the corresponding sodalite structures. The contraction of the unit cell of the basic sodalites Na8[AlSiO4]6(OH)2 · nH2O upon loss of 0 < n ≤ 4 H2O, however, is well understood in terms of space filling of the non-framework constituents and some special stereochemical features amongst sodium, oxygen and hydrogen atoms.