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Pressure-Induced Hydration and Formation of Bilayer Ice in Nacrite, a Kaolin-Group Clay
ACS Earth and Space Chemistry ( IF 2.9 ) Pub Date : 2020-01-07 , DOI: 10.1021/acsearthspacechem.9b00255 Huijeong Hwang 1 , Jinhyuk Choi 1 , Zhenxian Liu 2 , Duck-Young Kim 3 , Yu He 3 , Aaron J. Celestian 4 , Thomas Vogt 5 , Yongjae Lee 1, 3
ACS Earth and Space Chemistry ( IF 2.9 ) Pub Date : 2020-01-07 , DOI: 10.1021/acsearthspacechem.9b00255 Huijeong Hwang 1 , Jinhyuk Choi 1 , Zhenxian Liu 2 , Duck-Young Kim 3 , Yu He 3 , Aaron J. Celestian 4 , Thomas Vogt 5 , Yongjae Lee 1, 3
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Pressure-induced hydration of the clay mineral nacrite, Al2Si2O5(OH)4 is, in contrast to its polymorph kaolinite, partially irreversible. At ambient conditions after pressure release, a majority phase with composition Al2Si2O5(OH)4·2H2O with an intense (002) diffraction peak near d ∼ 8.4 Å has been found. Both in situ X-ray diffraction and simulations based on the density functional theory point to intercalation of molecules in nominally nonswelling clays and specific geophysical and geochemical conditions.
中文翻译：
压力诱导水合作用和高岭土基粘土Nacrite中双层冰的形成
与它的多晶型高岭石相反，粘土矿物闪石Al 2 Si 2 O 5（OH）4的压力诱导水合作用是部分不可逆的。在压力释放，以大多数阶段之后的环境条件的组合物的Al 2的Si 2 ø 5（OH）4 ·2H 2与邻近的强（002）衍射峰ø d〜8.4埃已经找到。基于密度泛函理论的原位X射线衍射和模拟都表明分子在名义上不膨胀的粘土中插层以及特定的地球物理和地球化学条件。
更新日期：2020-01-07
中文翻译：
压力诱导水合作用和高岭土基粘土Nacrite中双层冰的形成
与它的多晶型高岭石相反，粘土矿物闪石Al 2 Si 2 O 5（OH）4的压力诱导水合作用是部分不可逆的。在压力释放，以大多数阶段之后的环境条件的组合物的Al 2的Si 2 ø 5（OH）4 ·2H 2与邻近的强（002）衍射峰ø d〜8.4埃已经找到。基于密度泛函理论的原位X射线衍射和模拟都表明分子在名义上不膨胀的粘土中插层以及特定的地球物理和地球化学条件。
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