Source:http://linkedlifedata.com/resource/pubmed/id/18155717
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
2
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| pubmed:dateCreated |
2008-2-4
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| pubmed:abstractText |
In this study, anionic surfactant and silane-modified hydrotalcites were synthesized through a soft chemical in situ method. The resulting materials were characterized using X-ray diffraction (XRD), high-resolution thermogravimetric analysis (HRTG), Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and N2 adsorption-desorption. The Mg-Al hydrotalcite (LDH) and the only surfactant-modified hydrotalcite (LDH-2) display similar XRD patterns while both surfactant and silane-modified hydrotalcite (LDH-3) show two distinct series of reflections, corresponding to hydrotalcite and smectite-like materials, respectively. The smectite-like materials show a series of regular (001) reflections with d 001=12.58 A. Further supporting evidence was obtained from FTIR and TG, for example, the vibration at 1198 cm(-1) corresponds to SiOSi-stretching mode and the mass loss at ca. 861 degrees C to dehydroxylation. In LDH-2, the loaded surfactants are located in both the interlayer space and the interparticle pores with a "house of cards" structure as supported by FTIR, TG, and N2 adsorption-desorption isotherms. Both electron microscopy (SEM and TEM) micrographs and N2 adsorption-desorption isotherms show that in situ modification with surfactant and silane has a significant influence on the morphology and porous parameters of the resulting hydrotalcite materials.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:month |
Mar
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| pubmed:issn |
0021-9797
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| pubmed:author | |
| pubmed:issnType |
Print
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| pubmed:day |
15
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| pubmed:volume |
319
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
498-504
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| pubmed:dateRevised |
2009-11-11
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| pubmed:year |
2008
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| pubmed:articleTitle |
In situ synthesis of surfactant/silane-modified hydrotalcites.
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| pubmed:affiliation |
Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China.
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| pubmed:publicationType |
Journal Article
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