The University of Southampton
University of Southampton Institutional Repository

Synthesis and characterisation of new framework materials

Synthesis and characterisation of new framework materials
Synthesis and characterisation of new framework materials
Inorganic framework materials, with structures based on arsenate and phosphate, AsO4
and PO4, tetrahedra and a variety of octahedral metal units, such as hafnium, niobium
and iron, have been synthesised and fully characterised. These materials have been
synthesised by solvothermal techniques and the principal analytical technique to
characterise the resulting single crystals has been Single Crystal X-ray Diffraction.
Supporting analysis was carried out, using techniques such as Powder and Neutron
Diffraction, Thermogravimetric Analysis, Electron Dispersive Spectroscopy and
Infrared Spectroscopy.

Of the hafnium arsenates and phosphates that have been synthesised, several are
fluorinated and one is templated, such as Hf2F2(H(PO4)2)(NH4)2 and
[Hf2F8(AsO4)][DABCO-H2](NH4) respectively. Similar layered frameworks have also
been characterised and reported for titanium, zirconium and niobium. These structures
all offer ion exchange potential, due to their ammonium cations and/or water molecules.

The hydrogen iron phosphates that are discussed include two novel frameworks and
one material which offers an improved model for the mineral lipscombite,
Fe1.34(PO4)OH0.96. One of the new frameworks presented, (NH4)3Fe3(HPO4)6, offers
particularly interesting potential applications as a high capacity battery material via
lithium exchange reactions.

The hydrothermal synthesis of two novel hydrated sodium tungstate structures is also
discussed. One of these materials was found to contain a very high H : Na ratio,
resulting in strong hydrogen bonding and a densely packed framework, which may be of
interest in the field of high density liquids.
Redrup, Kate Victoria
36b0e2f5-fae3-4c42-bfb0-9fb5d794fdf6
Redrup, Kate Victoria
36b0e2f5-fae3-4c42-bfb0-9fb5d794fdf6
Weller, Mark
36a60b56-049f-466c-a1d7-39d6b0d85ff4

Redrup, Kate Victoria (2009) Synthesis and characterisation of new framework materials. University of Southampton, School of Chemistry, Doctoral Thesis, 243pp.

Record type: Thesis (Doctoral)

Abstract

Inorganic framework materials, with structures based on arsenate and phosphate, AsO4
and PO4, tetrahedra and a variety of octahedral metal units, such as hafnium, niobium
and iron, have been synthesised and fully characterised. These materials have been
synthesised by solvothermal techniques and the principal analytical technique to
characterise the resulting single crystals has been Single Crystal X-ray Diffraction.
Supporting analysis was carried out, using techniques such as Powder and Neutron
Diffraction, Thermogravimetric Analysis, Electron Dispersive Spectroscopy and
Infrared Spectroscopy.

Of the hafnium arsenates and phosphates that have been synthesised, several are
fluorinated and one is templated, such as Hf2F2(H(PO4)2)(NH4)2 and
[Hf2F8(AsO4)][DABCO-H2](NH4) respectively. Similar layered frameworks have also
been characterised and reported for titanium, zirconium and niobium. These structures
all offer ion exchange potential, due to their ammonium cations and/or water molecules.

The hydrogen iron phosphates that are discussed include two novel frameworks and
one material which offers an improved model for the mineral lipscombite,
Fe1.34(PO4)OH0.96. One of the new frameworks presented, (NH4)3Fe3(HPO4)6, offers
particularly interesting potential applications as a high capacity battery material via
lithium exchange reactions.

The hydrothermal synthesis of two novel hydrated sodium tungstate structures is also
discussed. One of these materials was found to contain a very high H : Na ratio,
resulting in strong hydrogen bonding and a densely packed framework, which may be of
interest in the field of high density liquids.

Text
REDRUP_Kate.pdf - Other
Download (5MB)

More information

Published date: 26 June 2009
Organisations: University of Southampton

Identifiers

Local EPrints ID: 79787
URI: http://eprints.soton.ac.uk/id/eprint/79787
PURE UUID: ab61133c-bd4a-4b5b-928a-058dbd1cba14

Catalogue record

Date deposited: 19 Mar 2010
Last modified: 29 Jan 2020 13:41

Export record

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×