کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5447847 | 1511765 | 2017 | 17 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Functionalization of montmorillonite with ionic liquids based on 1-alkyl-3-methylimidazolium: Effect of anion and length chain
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
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چکیده انگلیسی
In this work a series of ionic liquids based on 1-alkyl-3-methylimidazolium cations with Brâ, OHâ and BF4â anions were synthesized and characterized by FT-IR, 1HRMN and TGA. The alkylic chain length was modified by using butyl, octyl and hexadecyl substituents. These ionic liquids were used as functionalizing agents of sodium montmorillonite and the final material were characterized by means of XRD, FT-IR and TGA. The results show a significant increase in the interlayer space for the montmorillonite as the length carbon chain increases. In all cases it was possible an ionic liquid incorporation on montmorillonite more than 10% w/w. The presence of BF4â anion promotes thermal stability of the material whereas OHâ ion increases the ionic liquid amount that can be incorporated into the clay due to its favorable interactions with the phyllosilicate structure. The final organo-clay minerals are promising materials for removing organic composes from water.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 198, 1 September 2017, Pages 386-392
Journal: Materials Chemistry and Physics - Volume 198, 1 September 2017, Pages 386-392
نویسندگان
Diego F. Montaño, Herley Casanova, Wilson I. Cardona, Luis F. Giraldo,