A General phase - transfer protocol for mineral acids and its application in the large - scale synthesis of highly nanoporous iron phosphate in nonaqueous solvent / Junmei Zhao in Industrial & engineering chemistry research, Vol. 51 N° 37 (Septembre 2012)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 51 N° 37 (Septembre 2012) Titre : A General phase - transfer protocol for mineral acids and its application in the large - scale synthesis of highly nanoporous iron phosphate in nonaqueous solvent Type de document : texte imprimé Auteurs : Junmei Zhao, Auteur ; Jie Ma, Auteur ; Zelang Jian, Auteur Année de publication : 2012 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Nanoporous Iron Résumé : As a general protocol for transferring mineral acids from an aqueous solution to an organic phase, mineral acids are extracted with secondary carbon primary amine (C9–11)2CHNH2 (commercial code: N1923) into an organic phase (e.g., heptane or benzene) because of the complexation reaction and the formation of typical reversed micelles. Based on this principle, a novel approach for a large-scale synthesis of highly nanoporous iron phosphate particles is developed via the formed RNH3+/H2PO4– (H2O)/oil reversed micelle system and ethanol–Fe3+ solutions. Synthetic conditions, such as H3PO4 concentration in reversed micelles and Fe3+ concentration in ethanol–Fe3+ solution are investigated and optimized. The product is characterized using transmission electron microscopy, Brunauer–Emett–Teller, thermogravimetric analysis, X-ray diffraction, and Fourier transform infrared spectroscopy. The as-obtained iron phosphate is flocculent and highly porous, exhibiting a high reported surface area of 144 m2/g. The synthetic procedure is relatively simple and is suitable for large-scale fabrication, and the used organic amines can be recycled. The power of this approach is demonstrated using other kinds of organic amines, such as tri-n-octylamine (TOA) and tri-C8–10-alkylmethyl ammonium chloride (N263), as phase-transfer reagents exhibiting promising application in the synthesis of highly nanoporous materials. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie3016285 [article] A General phase - transfer protocol for mineral acids and its application in the large - scale synthesis of highly nanoporous iron phosphate in nonaqueous solvent [texte imprimé] / Junmei Zhao, Auteur ; Jie Ma, Auteur ; Zelang Jian, Auteur . - 2012. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 37 (Septembre 2012) Mots-clés : Nanoporous Iron Résumé : As a general protocol for transferring mineral acids from an aqueous solution to an organic phase, mineral acids are extracted with secondary carbon primary amine (C9–11)2CHNH2 (commercial code: N1923) into an organic phase (e.g., heptane or benzene) because of the complexation reaction and the formation of typical reversed micelles. Based on this principle, a novel approach for a large-scale synthesis of highly nanoporous iron phosphate particles is developed via the formed RNH3+/H2PO4– (H2O)/oil reversed micelle system and ethanol–Fe3+ solutions. Synthetic conditions, such as H3PO4 concentration in reversed micelles and Fe3+ concentration in ethanol–Fe3+ solution are investigated and optimized. The product is characterized using transmission electron microscopy, Brunauer–Emett–Teller, thermogravimetric analysis, X-ray diffraction, and Fourier transform infrared spectroscopy. The as-obtained iron phosphate is flocculent and highly porous, exhibiting a high reported surface area of 144 m2/g. The synthetic procedure is relatively simple and is suitable for large-scale fabrication, and the used organic amines can be recycled. The power of this approach is demonstrated using other kinds of organic amines, such as tri-n-octylamine (TOA) and tri-C8–10-alkylmethyl ammonium chloride (N263), as phase-transfer reagents exhibiting promising application in the synthesis of highly nanoporous materials. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie3016285

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