Synthesis And Characterisation Of Microporous Alpo-5 Molecular Sieves Templated By Novel Imidazolium-Based Structural Directing Agents

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dc.contributor.authorDamien Khoo, Yiyuan
dc.date.accessioned2019-08-20T07:20:04Z
dc.date.available2019-08-20T07:20:04Z
dc.date.issued2013-08
dc.description.abstractMicroporous aluminophosphate (AlPO) molecular sieves have been successfully crystallised under hydrothermal and ionothermal syntheses. The former approach engaged 3-(2,3-dihydroxypropyl)-1,2-dimethylimidazolium hydroxide, [dhpdm]OH, as a new structure-directing agent (SDA). The ionothermal synthesis was carried out by using 1-ethyl-2,3-dimethylimidazolium bromide, [edmim]Br ionic liquid, as both solvent and structure-directing agent. Both methods were investigated by optimising the synthesis conditions such as crystallisation time and temperature and molar concentrations of SDA, P2O5/Al2O3 ratio and H2O in precursor gels. The results obtained showed different morphologies of well-defined AlPO-5 (AFI) crystals with AFI topology under different synthesis conditions. Hydrothermal treatment using [dhpdm]OH produced crystals with column-strip, aggregated hexagonal prism, hexagonal barrel and narrow cylindrical rod structures. On the other hand, ionothermal treatment using [edmim]Br ionic liquid yielded aggregated and spheroidal hexagonal thin-plate crystals.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/8648
dc.language.isoenen_US
dc.publisherUniversiti Sains Malaysiaen_US
dc.subjectMicroporous Alpo-5 Molecular Sieves Templateden_US
dc.subjectNovel Imidazoliumen_US
dc.titleSynthesis And Characterisation Of Microporous Alpo-5 Molecular Sieves Templated By Novel Imidazolium-Based Structural Directing Agentsen_US
dc.typeThesisen_US
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