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ZSM-5 structured ca...
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Öhrman, Olov
(författare)
ZSM-5 structured catalysts coated with silicalite-1
- Artikel/kapitelEngelska2004
Förlag, utgivningsår, omfång ...
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Amsterdam :Elsevier,2004
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printrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:ltu-28463
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https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-28463URI
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Språk:engelska
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Sammanfattning på:engelska
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Klassifikation
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:kon swepub-publicationtype
Anmärkningar
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Godkänd; 2004; 20060922 (bajo)
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Alumina beads were coated with ZSM-5 films ranging from 150 nm to 2300 nm ill thickness. The ZSM-5 boated alumina beads were Subsequently hydrothermally treated in a silicalite-1 synthesis solution ill two steps Whereupon a dense silicalite-1 film was formed oil top of the ZSM-5 film. The materials were tested with two probe reactions and the reactivity was compared before and after coating with silicalite-1. As expected, the para-xylene (pX) isomerization reactivity showed no change for samples with and without the top layer of silicalite-1 for equal amounts Of zeolite. Surprisingly, the triisopropylbenzene (TIPB) conversion did not decrease after the silicalite-1 film was introduced. As measured by XPS, the aluminum concentration at the Surface of the uncalcined silicalite-1 film surface was lower compared to that at the Surface of the calcined ZSM-5 film. However, after calcination the concentration of aluminum was higher at the silicalite-1 film surface than at the ZSM-5 film Surface. These results Suggest that aluminum migrates from the ZSM-5 film into the silicalite-1 film during calcination and testing which results in all active top layer.
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Hedlund, JonasLuleå tekniska universitet,Industriell miljö- och processteknik(Swepub:ltu)johe
(författare)
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Msimang, V.Catalysis Research Unit, Department of Chemical Engineering, University of Cape Town
(författare)
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Möller, V.Catalysis Research Unit, Department of Chemical Engineering, University of Cape Town
(författare)
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Sterte, Johan
(författare)
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Luleå tekniska universitetIndustriell miljö- och processteknik
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Recent advances in the science and technology of zeolites and related materials. Part AAmsterdam : Elsevier, s. 677-6840444518274
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