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Dechézelles JF, Ciotonea C, Catrinescu C, Ungureanu A, Royer S, Nardello-Rataj V. Emulsions Stabilized with Alumina-Functionalized Mesoporous Silica Particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:3212-3220. [PMID: 32164410 DOI: 10.1021/acs.langmuir.9b03900] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Alumina-functionalized ordered mesoporous silica SBA-15 particles have been proposed to stabilize Pickering emulsions. Functionalization of SBA-15 particles have been performed by depositing alumina using a two-step synthesis (first, silica condensation, followed by alumina precipitation). Three different Al to Si ratios have been prepared. The calcined materials have been characterized by TEM, SEM, XRD, N2 physisorption, and zeta potential, in order to determine key physicochemical properties, and the alumina localization. The emulsifying and stabilizing properties of the calcined particles have been evaluated for water/toluene-based Pickering emulsions.
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Affiliation(s)
- Jean-François Dechézelles
- Univ. Lille, CNRS, Centrale Lille, Univ. Artois, UMR 8181 - UCCS, Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Carmen Ciotonea
- Univ. Lille, CNRS, Centrale Lille, Univ. Artois, UMR 8181 - UCCS, Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Cezar Catrinescu
- Faculty of Chemical Engineering and Environmental Protection "Gheorghe Asachi" Technical University of Iasi, 73 D. Mangeron, Blvd, 700050 Iasi, Romania
| | - Adrian Ungureanu
- Faculty of Chemical Engineering and Environmental Protection "Gheorghe Asachi" Technical University of Iasi, 73 D. Mangeron, Blvd, 700050 Iasi, Romania
| | - Sébastien Royer
- Univ. Lille, CNRS, Centrale Lille, Univ. Artois, UMR 8181 - UCCS, Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Véronique Nardello-Rataj
- Univ. Lille, CNRS, Centrale Lille, Univ. Artois, UMR 8181 - UCCS, Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
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Poduval DG, van Veen JAR, Rigutto MS, Hensen EJM. Brønsted acid sites of zeolitic strength in amorphous silica-alumina. Chem Commun (Camb) 2010; 46:3466-8. [PMID: 20407684 DOI: 10.1039/c000019a] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Dilip G Poduval
- Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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