Abstract
Microporous AFI type silicoaluminophosphate (SAPO-5) having aminosilane functionality in the framework was prepared by in-situ (direct co-condensation) approach under hydrothermal conditions. The template (structure directing agent) presents within the channels of synthesized aminosilane modified SAPO-5 framework was selectively removed by a unique method using acidic ethanol extraction. Before and after the template extraction, presence of AFI type phase of SAPO-5 was confirmed through powder XRD pattern. The complete removal of template from the channels of framework was confirmed through FT-IR, 13C MAS NMR and N2 sorption studies. The covalent bonding of aminosilane functionality within the organic–inorganic hybrid SAPO-5 framework was evident through 29Si MAS NMR and 13C MAS NMR studies. The final material was utilized for selective synthesis of 1-phenoxy-2-propanol (99%) via propylene oxide ring opening with phenol under solvent free conditions in liquid phase medium.
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Acknowledgements
Authors express their sincere thanks to DST-SERB (EMR/2014/001214) India, for their financial support. Authors are also thankful to Central University of Kerala for the support on instrumentation facility. Maqsood Ahmed is grateful to CSIR India for his research fellowship respectively.
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Ahmed, M., Sakthivel, A. Amine functionalized AFI type microporous SAPO-5 materials: preparation, unique method on template extraction, characterization and its catalytic application on epoxide ring opening. J Porous Mater 26, 319–326 (2019). https://doi.org/10.1007/s10934-018-0598-z
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DOI: https://doi.org/10.1007/s10934-018-0598-z