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Synthesis and Structural control of novel mesoporous material AMS-6
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Tekniska sektionen, Institutionen för teknikvetenskaper, Nanoteknologi och funktionella material. (Nanoteknologi och funktionella material)
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Tekniska sektionen, Institutionen för teknikvetenskaper, Nanoteknologi och funktionella material. (Nanoteknologi och funktionella material)
2007 (engelsk)Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

An in-depth study of the synthesis and growth of bicontinuous cubic mesoporous AMS-6 material in the presence of polymeric dispersant P123 is presented, resulting in controlled particle shape attainable over a small range of synthesis conditions. Unlike previous syntheses a remarkable effect on facet formation of the Iad silica particles with cubic morphologies is observed. Trapezoidal icositetrahedra, spherical and elongated morphologies have been prepared with increased faceting on addition of higher concentration of dispersant. Particles are characterised extensively by powder X-ray diffraction, transmission electron microscopy, scanning electron microscopy and nitrogen sorption isotherms. Mesoporous materials produced in this study show textural features suggesting a secondary porous network formed on the external surface of the particle and the origin of this secondary porosity is discussed. Based on the reduced dynamics generated by the presence of the P123 dispersant, we suggest possible growth models for the formation of mainly two different morphologies—the thermodynamically favoured trapezoidal icositetrahedron and elongated particles, the latter not following the expected point group symmetry, mm.

sted, utgiver, år, opplag, sider
2007.
HSV kategori
Forskningsprogram
Teknisk fysik med inriktning mot nanoteknologi och funktionella material
Identifikatorer
URN: urn:nbn:se:uu:diva-11998OAI: oai:DiVA.org:uu-11998DiVA, id: diva2:39767
Konferanse
30th Annual Meeting British Zeolite Association, York, United Kingdom
Tilgjengelig fra: 2008-01-29 Laget: 2009-02-26 Sist oppdatert: 2016-04-08bibliografisk kontrollert

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Atluri, RambabuGarcia Bennett, Alfonso

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