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Issue 13, 2015
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High-yield nanosized (Si)AlPO-41 using ethanol polarity equalization and co-templating synthesis approach

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Abstract

Control of the crystallite dimensions of the microporous aluminophosphate AlPO-41 (AFO-type framework structure), and the Si-containing analogue SAPO-41, was attained down to the nanometer scale under stable hydrothermal conditions. The combined application of a tetraalkylammonium co-template (tetrapentylammonium hydroxide) along with an amine structure directing agent (n-dipropylamine) stabilized through the use of ethanol in the initial suspension enables a crystallization medium, which remains homogeneous throughout the entire synthesis. As a direct consequence of the optimized homogeneity of the suspension, the AFO-type microporous nanocrystals (AlPO-41 and SAPO-41) with a size in the range of 30–500 nm with yields surpassing 50% are obtained. The feasibility to obtain nanosized AlPO-41 and SAPO-41 crystals using ethanol as a polarity equalizing agent, resulting in a scalable hydrothermal synthesis from non-colloidal starting mixtures without the use of other assisting methods, is presented.

Graphical abstract: High-yield nanosized (Si)AlPO-41 using ethanol polarity equalization and co-templating synthesis approach

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Publication details

The article was received on 09 Dec 2014, accepted on 18 Feb 2015 and first published on 25 Feb 2015


Article type: Paper
DOI: 10.1039/C4NR07272C
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Citation: Nanoscale, 2015,7, 5787-5793
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    High-yield nanosized (Si)AlPO-41 using ethanol polarity equalization and co-templating synthesis approach

    G. Majano, K. Raltchev, A. Vicente and S. Mintova, Nanoscale, 2015, 7, 5787
    DOI: 10.1039/C4NR07272C

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