High-temperature chemical and microstructural transformations of an organic-inorganic nanohybrid captopril intercalated Mg-Al layered double hydroxide
High-temperature chemical and microstructural transformations of an organic-inorganic nanohybrid captopril intercalated Mg-Al layered double hydroxide
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有机-无机纳米杂化卡托普利插层镁铝层状双氢氧化物的高温化学和微观结构转变
DOI:
10.1016/j.materresbull.2008.10.016
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发表时间:
2009-05
影响因子:
5.4
通讯作者:
中科院分区:
文献类型:
--
作者:
The thermal evolution of a crystalline organic–inorganic nanohybrid captopril intercalated Mg–Al layered double hydroxide (LDH) [Mg0.68Al0.32(OH)2] (C9H13NO3S)0.130(CO3)0.030·0.53H2O obtained by coprecipitation method is studied based upon in situ high-temperature X-ray diffraction, in situ infrared and thermogravimetric analysis coupled with mass spectroscopy analysis. The results reveal that a metastable quasi-interstratified layered nanohybrid involving carbonate-LDH and reoriented less ordered captopril-LDH was firstly observed as captopril-LDH heat-treated between 140 and 230°C. The major decomposition/combustion of interlayer organics occur between 270 and 550°C. A schematic model on chemical and microstructural evolution of this particular drug-inorganic nanohybrid upon heating in air atmosphere is proposed.
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