Inorganic monoliths in separation science: A review |
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Authors: | Zarah Walsh Brett Paull Mirek Macka |
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Affiliation: | 1. Irish Separation Science Cluster, National Centre for Sensor Research and School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland;2. Australian Centre for Research on Separation Science and School of Chemistry, University of Tasmania, Private Bag 75, Hobart 7001, Tasmania, Australia |
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Abstract: | The practical application of rigid, macro-porous organic polymer and silica based monolithic stationary phases as separation media has been described in the literature since 1992 and 1996, respectively. Today these materials are extensively used in chromatography and electrochromatography and several detailed reviews appear annually describing these materials, their synthesis and application. To compliment these publications, this review focuses upon the less commonly utilised materials for monolith synthesis, both those that have already been applied within separation science, and those that have found applications elsewhere, such as catalysis and water filtration, but have the clear potential to be explored as novel stationary phases in the near future. For the purpose of the review monoliths formed from these various alternative materials will be termed ‘Exotic Monoliths’, as these new substrates in many cases have only just begun to be explored for chromatographic separations, and in many instances have unusual and highly selective surface chemistries, which are attractive in terms of broadening the choice of monolithic materials for separation science. An extensive range of monolithic materials based on the following elements and their compounds (mostly oxides) are covered: Zr, Ti, Al, Hf, C, Au, Ag, Ce, Ge and hydroxyapatite, together with their relevant properties, methods of synthesis, and current and potential applications in separation science. |
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Keywords: | Monoliths Monolithic stationary phases Inorganic materials Separation science Chromatography |
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