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首页> 美国卫生研究院文献>ACS Omega >Trapping at the Solid–Gas Interface: SelectiveAdsorption of Naphthalene by Montmorillonite Intercalated with a Fe(III)–PhenanthrolineComplex
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Trapping at the Solid–Gas Interface: SelectiveAdsorption of Naphthalene by Montmorillonite Intercalated with a Fe(III)–PhenanthrolineComplex

机译：固-气界面的捕集：选择性蒙脱石与Fe（III）-菲咯啉插层吸附萘复杂

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摘要

In this study, stable hybrid materials (Mt–Fe(III)Phen), made by the μ-oxo Fe(III)–phenanthroline complex [(OH2)3(Phen)FeOFe(Phen)(OH2)3]4+ (Fe(III)Phen) intercalated in different amounts into montmorillonite (Mt), were used as a trap for immobilizing gaseous benzene and naphthalene and their mono chloro-derivatives at 25 and 50 °C. The entrapping process was studied through elemental analysis, magic angle spinning NMR spectroscopy, thermal analysis, and evolved gas mass spectrometry. Naphthalene and 1-chloronaphthalene were found to be immobilized in large amount at both temperatures. Molecular modeling allowed designing of the structure of the interlayer in the presence of the immobilized aromatic molecules. Adsorption is affected by the amount of the Fe complex hosted in the interlayer of the entrapping hybrid materials. On the contrary, under the same conditions, benzene and chlorobenzene were not adsorbed. Thermal desorption of naphthalenes was obtained under mild conditions, and immobilization was found to be reversible at least for 20 adsorption/desorption cycles.
机译：在这项研究中，由μ-氧代Fe（III）-菲咯啉配合物[（OH2）3（Phen）FeOFe（Phen）（OH2）3]制成的稳定的杂化材料（Mt-Fe（III）Phen）以不同数量插入蒙脱石（Mt）中的4+（Fe（III）Phen）用作捕集阱，用于在25和50°C下固定气态苯和萘及其一氯衍生物。通过元素分析，魔角旋转NMR光谱，热分析和逸出气体质谱法研究了捕获过程。发现在两个温度下萘和1-氯萘大量固定。分子建模允许在固定的芳族分子存在下设计中间层的结构。吸附受包裹在杂化材料夹层中的Fe络合物的数量的影响。相反，在相同条件下，苯和氯苯不被吸附。在温和条件下获得萘的热脱附，发现固定化至少可逆20次吸附/脱附循环。

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