Nucleation and growth of manganese oxides on metallic surfaces as a tool to prepare metallic monoliths

Frias, Dan; Nousir, Saadia; Barrio, Izaskun; Montes, Mario; T, L.M. Martínez; Centeno, M.A.; Odriozola, J.A.

doi:10.1016/j.apcata.2007.02.038

Cited by 53 publications

(37 citation statements)

References 10 publications

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“…The prepared suspension allows the deposition of around 80 mg of solid at each coating step. As previously reported the metal substrate may influence the activity and selectivity of the washcoated catalyst [31][32][33][34]. In order to highlight this possible influence the slurries were dried and further calcined as previously described for the monolithic catalysts.…”

Section: Methodsmentioning

confidence: 99%

Structuring Pt/CeO2/Al2O3 WGS catalyst: Introduction of buffer layer

González‐Castaño

Ivanova

Laguna

et al. 2017

Applied Catalysis B: Environmental

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Section: Methodsmentioning

confidence: 99%

Structuring Pt/CeO2/Al2O3 WGS catalyst: Introduction of buffer layer

González‐Castaño

Ivanova

Laguna

et al. 2017

Applied Catalysis B: Environmental

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“…This rough oxidic layer resulted in being well adhered on the surface of the wire meshes, enhancing the thermal stability of the substrate and allowing catalyst anchoring, which shows the importance of this pretreatment prior to the catalyst deposition [31][32][33].…”

Section: Catalytic Monoliths: Coating Depositionmentioning

confidence: 99%

Stacked Wire Mesh Monoliths for the Simultaneous Abatement of VOCs and Diesel Soot

et al. 2018

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Structured catalysts based on Pt,CeO 2 deposited on stainless steel wire meshes were developed to build catalytic cartridges for the treatment of diesel exhaust gases. The cartridges were tested for the simultaneous combustion of volatile organic compounds (VOCs) and soot. To this end, n-hexane, acetyl acetate, and toluene were selected as probe molecules. Each of them were loaded together with real soot into the cartridges showing that while VOCs abatement takes place between 200 • C and 350 • C, soot combustion occurs in the 300-500 • C temperature range with an average maximum combustion rate at 420 • C. The catalytic cartridges were characterized by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), and Brunauer-Emmett-Teller (BET) techniques. The mechanical stability of the coatings was confirmed by the ultrasound method. Air permeability of the cartridges prepared with different mesh sizes was also measured and the results were correlated using the Payri equation.

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“…After that, the monoliths were dried in an oven. The anodised aluminium monoliths were dried at 60°C for 1 h to avoid the sealing of alumina pores [11], while 120°C for 1 h was used for Fecralloy ones [9]. Finally, they were calcined at 300°C for 4 h with a heating ramp of 2°C min…”

Section: Catalyst Coating Depositionmentioning

confidence: 99%

“…The metallic substrates were pre-treated before anchoring of catalysts. Fecralloy monoliths were thermally treated at 900°C for 22 h [9,24] and the anodised aluminium monoliths were calcined at 500°C for 2 h.…”

Section: Preparation Of the Structured Supportsmentioning

confidence: 99%

“…Thus, thermal treatments have been demonstrated as very efficient for austenitic [3,6,7] and ferritic stainless steels [7][8][9] while anodisation is the elected method for aluminium surfaces [10,11]. Thermal treatment in synthetic air at 900°C for 1 h of AISI 304 monoliths generates an oxide layer composed mainly of chromium oxide and Mn-Cr-spinel type compounds [12], while thermal treatments at 900°C for 22 h produces an open structure of long and randomly oriented α-Al 2 O 3 whiskers in ferritic stainless steels containing 3-5 % of Al, as Fecralloy and Aluchrom YHf [7][8][9]. Finally, anodisation processes induce the formation of a porous amorphous alumina layer on the surface of the metallic aluminium [10].…”

Section: Introductionmentioning

confidence: 99%

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Au/CeO2 metallic monolith catalysts: influence of the metallic substrate

et al. 2013

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Ceria-based gold catalysts were successfully deposited on ferritic stainless steel (Fecralloy) and aluminium monoliths. The prepared monolithic and reference powder catalysts were characterized by means of S BET , X-ray diffraction, glow discharge optical emission spectroscopy and scanning electron microscopy-energy dispersive X-ray analysis techniques and tested in the CO oxidation reaction. Characterization results put in evidence the diffusion of cations from the catalytic layer on the surface of the monoliths to the metallic oxide scale and inversely, from the oxide scale to the catalysts, thus altering the catalytic formulation and affecting the CO oxidation properties of the catalytic device. The extension and nature of the modifications produced depend on the nature of the catalysts and the metallic substrate, as well as the reaction conditions applied. These facts must be considered when gold catalysts are supported on metallic-structured devices.

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Nucleation and growth of manganese oxides on metallic surfaces as a tool to prepare metallic monoliths

Cited by 53 publications

References 10 publications

Structuring Pt/CeO2/Al2O3 WGS catalyst: Introduction of buffer layer

Structuring Pt/CeO2/Al2O3 WGS catalyst: Introduction of buffer layer

Stacked Wire Mesh Monoliths for the Simultaneous Abatement of VOCs and Diesel Soot

Au/CeO2 metallic monolith catalysts: influence of the metallic substrate

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