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Synthesis and evaluation of ZSM-5 films on cordierite monoliths
- Öhrman, Olov (author)
-
- Hedlund, Jonas (author)
- Luleå tekniska universitet,Industriell miljö- och processteknik
- Sterte, Johan (author)
- (creator_code:org_t)
- Elsevier BV, 2004
- 2004
- English.
- In: Applied Catalysis A. - : Elsevier BV. - 0926-860X .- 1873-3875. ; 270:1-2, s. 193-199
- Journal article (peer-reviewed)
Abstract
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- 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.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Kemiska processer (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Chemical Process Engineering (hsv//eng)
Keyword
- Chemical Technology
- Kemisk teknologi
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- ref (subject category)
- art (subject category)
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