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Development of Ceramic Foams Containing Platinum Nanoparticles as the Catalyst
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science. (Engineering Materials)ORCID iD: 0000-0002-6702-4627
Luleå University of Technology, External. (Nouryon (Akzo Nobel Pulp and Performance Chemicals AB))
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0003-4888-6237
2019 (English)Conference paper, Poster (with or without abstract) (Refereed)
Abstract [en]

The exhaust gases contribute significantly to global warming, but without a catalytic converter, exhaust gases would be even more polluting. Therefore, having a catalytic metal such as platinum nanoparticles on the surface of the pore walls in ceramic foams is a practical way to remove particulate matters and to have an effective catalytic converter in one. The porous structure of the foam filters the particulate matters and the high specific surface area of the Pt nanoparticles in the pores speed up the reactions. The role of platinum is to oxidize carbon monoxide (CO) and hydrocarbons (HC) to form carbon dioxide (CO2) and water vapor (H2O). In this study, The Pt nanoparticles were coated on the surface of the thermally expandable microspheres (Expancel). The Energy-dispersive X-ray spectroscopy (EDS) and Ultraviolet-visible spectroscopy (UV-Vis) confirmed the successful adsorption of Pt on the Expancel surface. In the next step, alumina foams prepared by the gel-casting technique using Pt-coated Expancels as the sacrificial template. The EDS confirmed the successful transfer of the Pt nanoparticles to the pore walls of the foam. The morphology and the porosity of the foams were studied using SEM and X-ray microtomography. Moreover, the compressive strength of the prepared sample in form of the green body, debinded and sintered was measured.  The results showed a promising way to design ceramic-based bi-functional foams for eliminating dust and converting harmful gases to nontoxic gases simultaneously.

Place, publisher, year, edition, pages
2019.
National Category
Ceramics
Identifiers
URN: urn:nbn:se:ltu:diva-74639OAI: oai:DiVA.org:ltu-74639DiVA, id: diva2:1325996
Conference
10th EEIGM International Conference on Advanced Materials Research
Available from: 2019-06-17 Created: 2019-06-17 Last updated: 2019-06-17

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Hooshmand, SalehAkhtar, Farid

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CiteExportLink to record
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