Synthesis And Characterisation Of Microporous Alpo-5 Molecular Sieves Templated By Novel Imidazolium-Based Structural Directing Agents
Microporous 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 syn...
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my-usm-ep.452652019-08-23T08:19:46Z Synthesis And Characterisation Of Microporous Alpo-5 Molecular Sieves Templated By Novel Imidazolium-Based Structural Directing Agents 2013-08 Damien, Khoo Yiyuan QD1-999 Chemistry Microporous 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. 2013-08 Thesis http://eprints.usm.my/45265/ http://eprints.usm.my/45265/1/Damien%20Khoo%20Yiyuan24.pdf application/pdf en public masters Universiti Sains Malaysia Pusat Pengajian Kejuruteraan Kimia |
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Universiti Sains Malaysia |
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USM Institutional Repository |
| language |
English |
| topic |
QD1-999 Chemistry |
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QD1-999 Chemistry Damien, Khoo Yiyuan Synthesis And Characterisation Of Microporous Alpo-5 Molecular Sieves Templated By Novel Imidazolium-Based Structural Directing Agents |
| description |
Microporous 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. |
| format |
Thesis |
| qualification_level |
Master's degree |
| author |
Damien, Khoo Yiyuan |
| author_facet |
Damien, Khoo Yiyuan |
| author_sort |
Damien, Khoo Yiyuan |
| title |
Synthesis And Characterisation Of
Microporous Alpo-5 Molecular Sieves
Templated By Novel Imidazolium-Based
Structural Directing Agents |
| title_short |
Synthesis And Characterisation Of
Microporous Alpo-5 Molecular Sieves
Templated By Novel Imidazolium-Based
Structural Directing Agents |
| title_full |
Synthesis And Characterisation Of
Microporous Alpo-5 Molecular Sieves
Templated By Novel Imidazolium-Based
Structural Directing Agents |
| title_fullStr |
Synthesis And Characterisation Of
Microporous Alpo-5 Molecular Sieves
Templated By Novel Imidazolium-Based
Structural Directing Agents |
| title_full_unstemmed |
Synthesis And Characterisation Of
Microporous Alpo-5 Molecular Sieves
Templated By Novel Imidazolium-Based
Structural Directing Agents |
| title_sort |
synthesis and characterisation of
microporous alpo-5 molecular sieves
templated by novel imidazolium-based
structural directing agents |
| granting_institution |
Universiti Sains Malaysia |
| granting_department |
Pusat Pengajian Kejuruteraan Kimia |
| publishDate |
2013 |
| url |
http://eprints.usm.my/45265/1/Damien%20Khoo%20Yiyuan24.pdf |
| _version_ |
1747821480078475264 |