Location and orientation of the N,N-diisopropylethylamine template molecule in the AlPO4-18 framework by X-ray synchrotron diffraction and molecular modelling

引用本文: Christiana Zenonos, Dewi W. Lewis, Gopinathan Sankar. Location and orientation of the N,N-diisopropylethylamine template molecule in the AlPO₄-18 framework by X-ray synchrotron diffraction and molecular modelling[J]. 催化学报, 2015, 36(6): 874-879. doi: 10.1016/S1872-2067(14)60306-5 shu

Citation: Christiana Zenonos, Dewi W. Lewis, Gopinathan Sankar. Location and orientation of the N,N-diisopropylethylamine template molecule in the AlPO₄-18 framework by X-ray synchrotron diffraction and molecular modelling[J]. Chinese Journal of Catalysis, 2015, 36(6): 874-879. doi: 10.1016/S1872-2067(14)60306-5 shu

Location and orientation of the N,N-diisopropylethylamine template molecule in the AlPO₄-18 framework by X-ray synchrotron diffraction and molecular modelling

通讯作者: Gopinathan Sankar,Tel: +44-2076794664; E-mail: g.sankar@ucl.ac.uk

摘要: Phase pure AlPO₄ with the AlPO₄-18 (AEI) structure was synthesised using N,N- diisopropylethylamine as a template. Using a combination of X-ray powder diffraction and computational methods, the location and orientation of the N,N-diisopropylethylamine molecules inside the cages of the AEI structure were determined. Thermogravimetric analysis confirmed that the number of template molecules per unit cell was consistent with the diffraction study. We unequivocally show that only one template molecule is present in each cage of the crystalline AEI material. Our work demonstrates that a combined approach enables accurate structure resolution of such complex materials.

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English

Location and orientation of the N,N-diisopropylethylamine template molecule in the AlPO₄-18 framework by X-ray synchrotron diffraction and molecular modelling

1.
Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom

Corresponding author: Gopinathan Sankar,Tel: +44-2076794664; E-mail: g.sankar@ucl.ac.uk

Received Date: 18 December 2014
Available Online: 20 June 2015

Abstract: Phase pure AlPO₄ with the AlPO₄-18 (AEI) structure was synthesised using N,N- diisopropylethylamine as a template. Using a combination of X-ray powder diffraction and computational methods, the location and orientation of the N,N-diisopropylethylamine molecules inside the cages of the AEI structure were determined. Thermogravimetric analysis confirmed that the number of template molecules per unit cell was consistent with the diffraction study. We unequivocally show that only one template molecule is present in each cage of the crystalline AEI material. Our work demonstrates that a combined approach enables accurate structure resolution of such complex materials.

Key words:

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

Location and orientation of the N,N-diisopropylethylamine template molecule in the AlPO₄-18 framework by X-ray synchrotron diffraction and molecular modelling

通讯作者: Gopinathan Sankar,Tel: +44-2076794664; E-mail: g.sankar@ucl.ac.uk

English

Location and orientation of the N,N-diisopropylethylamine template molecule in the AlPO₄-18 framework by X-ray synchrotron diffraction and molecular modelling

Corresponding author: Gopinathan Sankar,Tel: +44-2076794664; E-mail: g.sankar@ucl.ac.uk

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