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...
| Hlavní autor: | |
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| Médium: | Diplomová práce |
| Jazyk: | English |
| Vydáno: |
2013
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| Témata: | |
| On-line přístup: | http://eprints.usm.my/45265/1/Damien%20Khoo%20Yiyuan24.pdf |
| _version_ | 1825835119391277056 |
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| author | Damien, Khoo Yiyuan |
| author_facet | Damien, Khoo Yiyuan |
| author_sort | Damien, Khoo Yiyuan |
| collection | USM |
| 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. |
| first_indexed | 2024-03-06T15:32:57Z |
| format | Thesis |
| id | usm.eprints-45265 |
| institution | Universiti Sains Malaysia |
| language | English |
| last_indexed | 2024-03-06T15:32:57Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | usm.eprints-452652019-08-23T08:19:46Z http://eprints.usm.my/45265/ Synthesis And Characterisation Of Microporous Alpo-5 Molecular Sieves Templated By Novel Imidazolium-Based Structural Directing Agents 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 NonPeerReviewed application/pdf en http://eprints.usm.my/45265/1/Damien%20Khoo%20Yiyuan24.pdf Damien, Khoo Yiyuan (2013) Synthesis And Characterisation Of Microporous Alpo-5 Molecular Sieves Templated By Novel Imidazolium-Based Structural Directing Agents. Masters thesis, Universiti Sains Malaysia. |
| spellingShingle | QD1-999 Chemistry Damien, Khoo Yiyuan Synthesis And Characterisation Of Microporous Alpo-5 Molecular Sieves Templated By Novel Imidazolium-Based Structural Directing Agents |
| title | 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_short | 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 |
| topic | QD1-999 Chemistry |
| url | http://eprints.usm.my/45265/1/Damien%20Khoo%20Yiyuan24.pdf |
| work_keys_str_mv | AT damienkhooyiyuan synthesisandcharacterisationofmicroporousalpo5molecularsievestemplatedbynovelimidazoliumbasedstructuraldirectingagents |