Microstructured cobalt catalyst for VOC combustion. Preparation of active Catalytic Surface

Łojewska, J.; Kołodziej, A.; Dynarowicz-Łątka, P.; Wesełucha-Birczyńska, A.

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Tytuł artykułu

Microstructured cobalt catalyst for VOC combustion. Preparation of active Catalytic Surface

Autorzy

Łojewska J. , Kołodziej A. , Dynarowicz-Łątka P. , Wesełucha-Birczyńska A.

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Abstrakty

VOC combustion is a demanding process for both reactor and catalyst design. The microstructural reactor based on the wire gauze was regarded as an alternative to ceramic monoliths comparing their heat and mass transfer coefficients. Chromium-aluminum (CrAl) and chromium-nickel steel were surveyed in terms of their applicability for carrier manufacturing and catalyst depositing. The alumina washcoat and cobalt catalyst were deposited as organic precursors using the Langmuir-Blodgett method (LB) which allows to control the amount of the deposited metal. The carriers were characterized at various stages of the preparation by SEM/EDX, XPS, RM methods and tested in n-hexane combustion. Oxidation of the Al washcoat precursor led to the gamma-Al2O3 formation improving the properties of the Al2O3 layer developed on the precalcined CrAl carrier. Oxidation of cobalt stearate deposited on the CrAl gave cobalt oxide, which was assigned to the dispersed spinel Co3O4. The activation energy for the obtained cobalt catalyst (47 kJ/mol) was twice as low as for a standard Pt/Al2O3 catalyst.

Słowa kluczowe

VOC combustion cobalt catalyst microstructured reactors Langmuir-Blodgett method

spalanie VOC katalizator kobaltowy reaktor metoda Langmuira-Blodgett

Wydawca

West Pomeranian University of Technology. Publishing House

Czasopismo

Polish Journal of Chemical Technology

Rocznik

2005

Tom

Vol. 7, nr 2

Strony

31--39

Opis fizyczny

Bibliogr. 31 poz., tab., rys.

Twórcy

autor

Łojewska J.

lojewska@chemia.uj.edu.pl

Jagiellonian University, Faculty of Chemistry, ul. Ingardena 3, 30-060 Krakow

autor

Kołodziej A.

Institute of Chemical Engineering PAS, ul. Bałtycka 5, 44-100 Gliwice, Poland

autor

Dynarowicz-Łątka P.

Jagiellonian University, Faculty of Chemistry, ul. Ingardena 3, 30-060 Krakow

autor

Wesełucha-Birczyńska A.

Jagiellonian University, Faculty of Chemistry, ul. Ingardena 3, 30-060 Krakow

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Typ dokumentu

Bibliografia

Identyfikator YADDA

bwmeta1.element.baztech-article-BPS2-0035-0046