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Crystal growth study of K-F nanozeolite and its catalytic behavior in Aldol condensation of benzaldehyde and heptanal enhanced by microwave heating

An investigation of nanosized potassium aluminosilicate F-type zeolite (K-F, structure code EDI) converted from rice husk ash (RHA) is reported. The crystallization process was studied in an organic template-free system under microwave radiation at 100 °C and the evolution was followed by spectrosco...

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Main Authors: Wong, Siew Fang, Deekomwong, Krittanun, Wittayakun, Jatuporn, Ling, Tau Chuan, Muraza, Oki, Adam, Farook, Ng, Eng Poh
格式: Article
出版: Elsevier 2017
主題:
Q Science (General)
QH Natural history
在線閱讀:http://eprints.um.edu.my/22785/
https://doi.org/10.1016/j.matchemphys.2017.04.061
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spelling my.um.eprints.227852019-10-21T08:08:33Z http://eprints.um.edu.my/22785/ Crystal growth study of K-F nanozeolite and its catalytic behavior in Aldol condensation of benzaldehyde and heptanal enhanced by microwave heating Wong, Siew Fang Deekomwong, Krittanun Wittayakun, Jatuporn Ling, Tau Chuan Muraza, Oki Adam, Farook Ng, Eng Poh Q Science (General) QH Natural history An investigation of nanosized potassium aluminosilicate F-type zeolite (K-F, structure code EDI) converted from rice husk ash (RHA) is reported. The crystallization process was studied in an organic template-free system under microwave radiation at 100 °C and the evolution was followed by spectroscopy and microscopy techniques. The study indicated that the crystallization rate of K-F zeolite was significantly enhanced using microwave radiation. The zeolite started to nucleate at 0.5 min and flattened cuboid shaped K-F zeolite crystals (ca. 39 nm, Si/Al = 1.26) were formed after 2 min onwards. The nanocrystalline K-F zeolite exhibited good catalytic performance in solvent-free Aldol condensation reaction between benzaldehyde and heptanal, with ca. 75% reactant conversion and ca. 67% jasminaldehyde selectivity even after fifth cycle of reaction. Elsevier 2017 Article PeerReviewed Wong, Siew Fang and Deekomwong, Krittanun and Wittayakun, Jatuporn and Ling, Tau Chuan and Muraza, Oki and Adam, Farook and Ng, Eng Poh (2017) Crystal growth study of K-F nanozeolite and its catalytic behavior in Aldol condensation of benzaldehyde and heptanal enhanced by microwave heating. Materials Chemistry and Physics, 196. pp. 295-301. ISSN 0254-0584 https://doi.org/10.1016/j.matchemphys.2017.04.061 doi:10.1016/j.matchemphys.2017.04.061
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic Q Science (General)
QH Natural history
spellingShingle Q Science (General)
QH Natural history
Wong, Siew Fang
Deekomwong, Krittanun
Wittayakun, Jatuporn
Ling, Tau Chuan
Muraza, Oki
Adam, Farook
Ng, Eng Poh
Crystal growth study of K-F nanozeolite and its catalytic behavior in Aldol condensation of benzaldehyde and heptanal enhanced by microwave heating
description An investigation of nanosized potassium aluminosilicate F-type zeolite (K-F, structure code EDI) converted from rice husk ash (RHA) is reported. The crystallization process was studied in an organic template-free system under microwave radiation at 100 °C and the evolution was followed by spectroscopy and microscopy techniques. The study indicated that the crystallization rate of K-F zeolite was significantly enhanced using microwave radiation. The zeolite started to nucleate at 0.5 min and flattened cuboid shaped K-F zeolite crystals (ca. 39 nm, Si/Al = 1.26) were formed after 2 min onwards. The nanocrystalline K-F zeolite exhibited good catalytic performance in solvent-free Aldol condensation reaction between benzaldehyde and heptanal, with ca. 75% reactant conversion and ca. 67% jasminaldehyde selectivity even after fifth cycle of reaction.
format Article
author Wong, Siew Fang
Deekomwong, Krittanun
Wittayakun, Jatuporn
Ling, Tau Chuan
Muraza, Oki
Adam, Farook
Ng, Eng Poh
author_facet Wong, Siew Fang
Deekomwong, Krittanun
Wittayakun, Jatuporn
Ling, Tau Chuan
Muraza, Oki
Adam, Farook
Ng, Eng Poh
author_sort Wong, Siew Fang
title Crystal growth study of K-F nanozeolite and its catalytic behavior in Aldol condensation of benzaldehyde and heptanal enhanced by microwave heating
title_short Crystal growth study of K-F nanozeolite and its catalytic behavior in Aldol condensation of benzaldehyde and heptanal enhanced by microwave heating
title_full Crystal growth study of K-F nanozeolite and its catalytic behavior in Aldol condensation of benzaldehyde and heptanal enhanced by microwave heating
title_fullStr Crystal growth study of K-F nanozeolite and its catalytic behavior in Aldol condensation of benzaldehyde and heptanal enhanced by microwave heating
title_full_unstemmed Crystal growth study of K-F nanozeolite and its catalytic behavior in Aldol condensation of benzaldehyde and heptanal enhanced by microwave heating
title_sort crystal growth study of k-f nanozeolite and its catalytic behavior in aldol condensation of benzaldehyde and heptanal enhanced by microwave heating
publisher Elsevier
publishDate 2017
url http://eprints.um.edu.my/22785/
https://doi.org/10.1016/j.matchemphys.2017.04.061
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score 13.250246

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