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Synthesis and evaluation of ZSM-5 films on cordierite monoliths
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
2004 (English)In: Applied Catalysis A: General, ISSN 0926-860X, E-ISSN 1873-3875, Vol. 270, no 1-2, p. 193-199Article in journal (Refereed) Published
Abstract [en]

Well-defined ZSM-5 films were prepared on cordierite monoliths using the seed film method. The monoliths were seeded with silicalite-1 seeds and hydrothermally treated either at 75 or at 150 °C in a single or several steps. By adding sodium hydroxide to the solution, the aluminum concentration in the zeolite increased. Consequently, films with different Si/Al ratios were prepared. The film thickness could be controlled from 110 nm to 9 μm. Multi-step synthesis was used to prevent bulk crystallization and ultrasound treatment was found to be beneficial (in order) to remove sedimented crystals on the top of the coatings. The zeolite-coated monoliths were active for p-xylene isomerization, and the test results indicated that the films became less deactivated than the films prepared on alumina beads.

Place, publisher, year, edition, pages
2004. Vol. 270, no 1-2, p. 193-199
National Category
Chemical Process Engineering
Research subject
Chemical Technology
Identifiers
URN: urn:nbn:se:ltu:diva-7498DOI: 10.1016/j.apcata.2004.05.004Local ID: 5e524350-6f83-11db-962b-000ea68e967bOAI: oai:DiVA.org:ltu-7498DiVA: diva2:980388
Note
Validerad; 2004; 20060926 (bajo)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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Öhrman, OlovHedlund, JonasSterte, Johan
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