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Article: Synthesis research of nanosized ZSM-5 zeolites in the absence of organic template

TitleSynthesis research of nanosized ZSM-5 zeolites in the absence of organic template
Authors
KeywordsMachines
Nanosized Zsm-5 Zeolite
Synthesis
Transmission Electron Microscopy
X-Ray Techniques
Issue Date2008
PublisherElsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/jmatprotec
Citation
Journal of Materials Processing Technology, 2008, v. 206 n. 1-3, p. 445-452 How to Cite?
AbstractNanosized ZSM-5 zeolite was successfully synthesized at 453 K for 24 h after agitating for a duration of 5 h with great speed and 24 h aging in the synthesis sol with the molar composition of 12Na2O:100SiO2:2Al2O3:2500H2O. X-ray diffraction confirmed ZSM-5 crystal phase, transmission electron microscopy showed ZSM-5 zeolite crystal sizes are about 15 nm. Fourier transform infrared analysis further showed that nanosized zeolite has pentacycle of typical absorption summit of ZSM-5 at 546 cm-1. The results clearly show that Na+ cation plays a role of structure directing as well as a role of charge balancing agent. In addition, it is noticed that when the SiO2/Al2O3 molar ratio is 50, higher or lower Na2O content seems unable to obtain pure ZSM-5. Otherwise, as the SiO2/Al2O3 molar ratio decreases to 30 or lower than it, the crystallization tends to direct toward the formation of mordenite. The results show that synthesis temperature and time, concentration, agitation and aging are very important in preparing nanosized ZSM-5 zeolite. © 2007 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/91237
ISSN
2015 Impact Factor: 2.359
2015 SCImago Journal Rankings: 1.464
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorCheng, Yen_HK
dc.contributor.authorLiao, RHen_HK
dc.contributor.authorLi, JSen_HK
dc.contributor.authorSun, XYen_HK
dc.contributor.authorWang, LJen_HK
dc.date.accessioned2010-09-17T10:15:24Z-
dc.date.available2010-09-17T10:15:24Z-
dc.date.issued2008en_HK
dc.identifier.citationJournal of Materials Processing Technology, 2008, v. 206 n. 1-3, p. 445-452en_HK
dc.identifier.issn0924-0136en_HK
dc.identifier.urihttp://hdl.handle.net/10722/91237-
dc.description.abstractNanosized ZSM-5 zeolite was successfully synthesized at 453 K for 24 h after agitating for a duration of 5 h with great speed and 24 h aging in the synthesis sol with the molar composition of 12Na2O:100SiO2:2Al2O3:2500H2O. X-ray diffraction confirmed ZSM-5 crystal phase, transmission electron microscopy showed ZSM-5 zeolite crystal sizes are about 15 nm. Fourier transform infrared analysis further showed that nanosized zeolite has pentacycle of typical absorption summit of ZSM-5 at 546 cm-1. The results clearly show that Na+ cation plays a role of structure directing as well as a role of charge balancing agent. In addition, it is noticed that when the SiO2/Al2O3 molar ratio is 50, higher or lower Na2O content seems unable to obtain pure ZSM-5. Otherwise, as the SiO2/Al2O3 molar ratio decreases to 30 or lower than it, the crystallization tends to direct toward the formation of mordenite. The results show that synthesis temperature and time, concentration, agitation and aging are very important in preparing nanosized ZSM-5 zeolite. © 2007 Elsevier B.V. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/jmatprotecen_HK
dc.relation.ispartofJournal of Materials Processing Technologyen_HK
dc.subjectMachinesen_HK
dc.subjectNanosized Zsm-5 Zeoliteen_HK
dc.subjectSynthesisen_HK
dc.subjectTransmission Electron Microscopyen_HK
dc.subjectX-Ray Techniquesen_HK
dc.titleSynthesis research of nanosized ZSM-5 zeolites in the absence of organic templateen_HK
dc.typeArticleen_HK
dc.identifier.emailCheng, Y:yuecheng@hku.hken_HK
dc.identifier.authorityCheng, Y=rp1320en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.jmatprotec.2007.12.054en_HK
dc.identifier.scopuseid_2-s2.0-44749088419en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-44749088419&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume206en_HK
dc.identifier.issue1-3en_HK
dc.identifier.spage445en_HK
dc.identifier.epage452en_HK
dc.identifier.isiWOS:000257563200057-

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