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Novel one-step synthesis route to ordered mesoporous silica-pillared clay using cationic−anionic mixed-gallery templates / Mao, Huihui in Industrial & engineering chemistry research, Vol. 49 N° 2 (Janvier 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 2 (Janvier 2010) . - pp 583–591 Titre : Novel one-step synthesis route to ordered mesoporous silica-pillared clay using cationic−anionic mixed-gallery templates Type de document : texte imprimé Auteurs : Mao, Huihui, Auteur ; Li, Baoshan, Auteur ; Li, Xiao, Auteur Année de publication : 2010 Article en page(s) : pp 583–591 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Silica-Pillared  Micromesoporous  X-ray  diffraction. Résumé : A novel one-step synthesis route to ordered mesoporous silica-pillared clay (SPC) with cantonic−anionic mixed-gallery templates has been successfully established. This approach involves the type and formation of surfactant mixture for SPC through intragallery ammonia-catalyzed tetraethoxysilane (TEOS). The formation of a precursor with a micromesoporous framework is a result of TEOS hydrolysis and the presence of surfactant micelles in the gallery regions under ammonia-catalyzed conditions. The type of structure was confirmed by X-ray diffraction (XRD), differential scanning calorimetry (DSC), scanning electron microscopy (SEM), and low-temperature N2 physisorption. Addition of the anionic surfactant resulted in changes of the layered structure and ratio of micropores to mesopores. The formation mechanism of SPC derivatives is proposed. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie9011563 [article] Novel one-step synthesis route to ordered mesoporous silica-pillared clay using cationic−anionic mixed-gallery templates [texte imprimé] / Mao, Huihui, Auteur ; Li, Baoshan, Auteur ; Li, Xiao, Auteur . - 2010 . - pp 583–591. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 2 (Janvier 2010) . - pp 583–591 Mots-clés : Silica-Pillared  Micromesoporous  X-ray  diffraction. Résumé : A novel one-step synthesis route to ordered mesoporous silica-pillared clay (SPC) with cantonic−anionic mixed-gallery templates has been successfully established. This approach involves the type and formation of surfactant mixture for SPC through intragallery ammonia-catalyzed tetraethoxysilane (TEOS). The formation of a precursor with a micromesoporous framework is a result of TEOS hydrolysis and the presence of surfactant micelles in the gallery regions under ammonia-catalyzed conditions. The type of structure was confirmed by X-ray diffraction (XRD), differential scanning calorimetry (DSC), scanning electron microscopy (SEM), and low-temperature N2 physisorption. Addition of the anionic surfactant resulted in changes of the layered structure and ratio of micropores to mesopores. The formation mechanism of SPC derivatives is proposed. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie9011563