Article: Growth of SAPO-34 in polymer hydrogels through vapor-phase transport

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TitleGrowth of SAPO-34 in polymer hydrogels through vapor-phase transport
AuthorsYao, J1 3
Wang, H2 4
Ringer, SP2
Chan, KY3 4
Zhang, L1
Xu, N1
KeywordsCrystal size
Polymer hydrogel
SAPO-34
Silicoaluminophosphate (SAPO)
Vapor-phase transport (VPT)
Issue Date2005
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/micromeso
CitationMicroporous And Mesoporous Materials, 2005, v. 85 n. 3, p. 267-272 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.micromeso.2005.06.026
AbstractCross-linked polyacrylamide (C-PAM) hydrogels were employed to reduce the crystal size of SAPO-34 molecular sieves in a vapor-phase transport process. A wide size distribution of SAPO-34 crystals, ranging from a few nanometers to 3-5 μm, was produced when the synthesis precursor gels contained the appropriate amount of C-polyacrylamide (C-PAM) hydrogels. Specifically, these dispersions of SAPO-34 crystallites were formed when the molar ratio of polyacrylamide to Al2O3 was between 0.29 and 043. These crystals exhibited a BET surface area of 342-325 m2/g, micropore volume of 0.15-0.12 cm3/g, and TEA entrapment of 9.3-8.0%. Microanalysis using EDXS revealed the presence of residual precursor materials, such as phosphorus, supporting the fact that our samples possessed a lower BET surface area and micropore volume as compared with the SAPO-34 prepared by hydrothermal method in the literature. © 2005 Elsevier Inc. All rights reserved.
ISSN1387-1811
2011 Impact Factor: 3.285
2011 SCImago Journal Rankings: 0.232
DOIhttp://dx.doi.org/10.1016/j.micromeso.2005.06.026
ISI Accession Number IDWOS:000232864200009
ReferencesReferences in Scopus
DC Field
Value
dc.contributor.authorYao, J
dc.contributor.authorWang, H
dc.contributor.authorRinger, SP
dc.contributor.authorChan, KY
dc.contributor.authorZhang, L
dc.contributor.authorXu, N
dc.date.accessioned2010-09-06T06:13:27Z
dc.date.available2010-09-06T06:13:27Z
dc.date.issued2005
dc.description.abstractCross-linked polyacrylamide (C-PAM) hydrogels were employed to reduce the crystal size of SAPO-34 molecular sieves in a vapor-phase transport process. A wide size distribution of SAPO-34 crystals, ranging from a few nanometers to 3-5 μm, was produced when the synthesis precursor gels contained the appropriate amount of C-polyacrylamide (C-PAM) hydrogels. Specifically, these dispersions of SAPO-34 crystallites were formed when the molar ratio of polyacrylamide to Al2O3 was between 0.29 and 043. These crystals exhibited a BET surface area of 342-325 m2/g, micropore volume of 0.15-0.12 cm3/g, and TEA entrapment of 9.3-8.0%. Microanalysis using EDXS revealed the presence of residual precursor materials, such as phosphorus, supporting the fact that our samples possessed a lower BET surface area and micropore volume as compared with the SAPO-34 prepared by hydrothermal method in the literature. © 2005 Elsevier Inc. All rights reserved.
dc.description.natureLink_to_subscribed_fulltext
dc.identifier.citationMicroporous And Mesoporous Materials, 2005, v. 85 n. 3, p. 267-272 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.micromeso.2005.06.026
dc.identifier.doihttp://dx.doi.org/10.1016/j.micromeso.2005.06.026
dc.identifier.epage272
dc.identifier.hkuros116500
dc.identifier.isiWOS:000232864200009
dc.identifier.issn1387-1811
2011 Impact Factor: 3.285
2011 SCImago Journal Rankings: 0.232
dc.identifier.issue3
dc.identifier.openurl
dc.identifier.scopuseid_2-s2.0-26044482223
dc.identifier.spage267
dc.identifier.urihttp://hdl.handle.net/10722/69415
dc.identifier.volume85
dc.languageeng
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/micromeso
dc.publisher.placeNetherlands
dc.relation.ispartofMicroporous and Mesoporous Materials
dc.relation.referencesReferences in Scopus
dc.rightsMicroporous and Mesoporous Materials . Copyright © Elsevier BV.
dc.subjectCrystal size
dc.subjectPolymer hydrogel
dc.subjectSAPO-34
dc.subjectSilicoaluminophosphate (SAPO)
dc.subjectVapor-phase transport (VPT)
dc.titleGrowth of SAPO-34 in polymer hydrogels through vapor-phase transport
dc.typeArticle
Author Affiliations
  1. Nanjing University of Technology
  2. University of Sydney
  3. The University of Hong Kong
  4. Monash University