Show simple item record

dc.contributor.authorChaignon, J.
dc.contributor.authorBouizi, Y.
dc.contributor.authorDavin, L.
dc.contributor.authorCalin, N.
dc.contributor.authorAlbela, B.
dc.contributor.authorBonneviot, L.
dc.date.accessioned2016-02-25T13:42:15Z
dc.date.available2016-02-25T13:42:15Z
dc.date.issued2015
dc.identifier.citationChaignon J, Bouizi Y, Davin L, Calin N, Albela B, et al. (2015) Minute-made and low carbon fingerprint microwave synthesis of high quality templated mesoporous silica. Green Chem 17: 3130–3140. Available: http://dx.doi.org/10.1039/c5gc00038f.
dc.identifier.issn1463-9262
dc.identifier.issn1463-9270
dc.identifier.doi10.1039/c5gc00038f
dc.identifier.urihttp://hdl.handle.net/10754/598841
dc.description.abstract© The Royal Society of Chemistry 2015. Hexagonal mesostructured templated silicas were produced in less than 10 minutes using an ultra-fast microwave assisted hydrothermal synthesis. Typically, 10 g can be prepared at once in a commercial microwave device usually devoted to analytical digestion. Undesired alcohol side-products were avoided using inexpensive water colloidal silica instead of silicon alkoxides as the silicon source. In comparison with classical heating activation, the absence of pore expansion and pore wall thickening even for synthesis temperatures as high as 190 °C evidenced that heat transfer and diffusion of matter had no time to take place. Comparison between the chemically extracted and calcined samples shows that the structure was better stabilized for autoclaving above 150 °C. However, a fast temperature ramping and final temperatures above 180 °C were required to sear structures of the highest quality comparable to that of the best conventional methods. This is rationalized by assuming a sequential flake-by-flake assembly of the pore-wall at the micelle palisade. Notably, tosylate counterions yielded better structural characteristics than bromide counterions and allowed better opportunities for surfactant recycling.
dc.description.sponsorshipThe authors thank the KAUST funding grant. J. C. thanks the French "Ministere de l'Enseignement, de la Recherche et de la Technologie" (MERT) for a PhD fellowship, and the C-MIRA program of Rhone-Alpes region in France for financial support.
dc.publisherRoyal Society of Chemistry (RSC)
dc.titleMinute-made and low carbon fingerprint microwave synthesis of high quality templated mesoporous silica
dc.typeArticle
dc.identifier.journalGreen Chem.
dc.contributor.institutionUniversite de Lyon, Lyon, France
dc.contributor.institutionUniversite de Lorrain, Nancy, France
dc.contributor.institutionUniversity of Strathclyde, Glasgow, United Kingdom


This item appears in the following Collection(s)

Show simple item record