Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Internal structure of a gel leading to NBA-ZSM-5 single crystals
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Chemical Engineering. Department of Chemistry, Faculty of Science and Technology, San Simon University, Cochabamba, Bolivia.ORCID iD: 0000-0002-8637-0461
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Chemical Engineering.ORCID iD: 0000-0003-1053-4623
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Chemical Engineering.ORCID iD: 0000-0003-4582-0902
2018 (English)In: Journal of porous materials, ISSN 1380-2224, E-ISSN 1573-4854, Vol. 25, no 6, p. 1551-1559Article in journal (Refereed) Published
Abstract [en]

Porous gel structures are formed during the synthesis of the zeolite ZSM-5 due to the reaction between a source of aluminosilicate, sodium hydroxide, water and a structure directing agent, such as e.g. tetrapropylammonium (TPA) or n-butylamine (NBA). In the present work, the formation of the gel in a heterogeneous system leading to the crystallization of NBA-ZSM-5 zeolite from leached metakaolin was studied extensively. The solid and liquid phases obtained after separation were analyzed by inductively coupled plasma sector field mass spectrometry, dynamic light scattering, extreme high resolution-scanning electron microscopy, energy dispersive spectroscopy, high resolution-transmission electron microscopy, X-ray diffraction and nitrogen gas adsorption. The main gel phase formed after hydrothermal treatment exhibited a sponge-like structure resembling those forming in (Na, TPA)-ZSM-5-based systems. For the first time, the walls of the main gel were shown to be inhomogenous and to possess a biphasic internal structure consisting of a mesoporous skeleton of aluminosilicate nanoparticles embedded in a silicate-rich soluble matrix of soft matter. The data presented in this paper is of primary importance to understand the mechanism by which the gel is consumed and contributes to the growth process of the zeolite crystals.

Place, publisher, year, edition, pages
Springer, 2018. Vol. 25, no 6, p. 1551-1559
Keywords [en]
ZSM-5, Zeolite, Heterogeneous system, Aluminosilicate gel, Microstructure
National Category
Chemical Engineering
Research subject
Chemical Technology
Identifiers
URN: urn:nbn:se:ltu:diva-67592DOI: 10.1007/s10934-018-0568-5ISI: 000447386800001Scopus ID: 2-s2.0-85041522121OAI: oai:DiVA.org:ltu-67592DiVA, id: diva2:1181823
Note

Validerad;2018;Nivå 2;2018-11-01 (svasva)

Available from: 2018-02-09 Created: 2018-02-09 Last updated: 2025-02-18Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Aguilar-Mamani, WilsonHedlund, JonasMouzon, Johanne
By organisation
Chemical Engineering
In the same journal
Journal of porous materials
Chemical Engineering

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 796 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf