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Article

Atomic Layer Deposition Coated Filters in Catalytic Filtration of Gasification Gas

1
VTT Technical Research Centre of Finland Ltd., P.O. Box 1000, FIN-02044 Espoo, Finland
2
Department of Chemistry, University of Helsinki, P.O. Box 55, FIN-00014 Helsinki, Finland
*
Author to whom correspondence should be addressed.
Academic Editor: Morris D. Argyle
Catalysts 2021, 11(6), 688; https://doi.org/10.3390/catal11060688
Received: 29 April 2021 / Revised: 18 May 2021 / Accepted: 25 May 2021 / Published: 29 May 2021
(This article belongs to the Special Issue Catalysts in Production of Clean Gasification Gas)
Steel filter discs were catalytically activated by ALD, using a coating of supporting Al2O3 layer and an active NiO layer for gas cleaning. Prepared discs were tested for model biomass gasification and gas catalytic filtration to reduce or eliminate the need for a separate reforming unit for gasification gas tars and lighter hydrocarbons. Two different coating methods were tested. The method utilizing the stop-flow setting was shown to be the most suitable for the preparation of active and durable catalytic filters, which significantly decreases the amount of tar compounds in gasification gas. A pressure of 5 bar and temperatures of over 850 °C are required for efficient tar reforming. In optimal conditions, applying catalytic coating to the filter resulted in a seven-fold naphthalene conversion increase from 7% to 49%. View Full-Text
Keywords: atomic layer deposition (ALD); gasification gas; tar reforming; catalytic filtration atomic layer deposition (ALD); gasification gas; tar reforming; catalytic filtration
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MDPI and ACS Style

Viertiö, T.; Kivelä, V.; Putkonen, M.; Kihlman, J.; Simell, P. Atomic Layer Deposition Coated Filters in Catalytic Filtration of Gasification Gas. Catalysts 2021, 11, 688. https://doi.org/10.3390/catal11060688

AMA Style

Viertiö T, Kivelä V, Putkonen M, Kihlman J, Simell P. Atomic Layer Deposition Coated Filters in Catalytic Filtration of Gasification Gas. Catalysts. 2021; 11(6):688. https://doi.org/10.3390/catal11060688

Chicago/Turabian Style

Viertiö, Tyko, Viivi Kivelä, Matti Putkonen, Johanna Kihlman, and Pekka Simell. 2021. "Atomic Layer Deposition Coated Filters in Catalytic Filtration of Gasification Gas" Catalysts 11, no. 6: 688. https://doi.org/10.3390/catal11060688

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