A method to form well-adhered γ-Al2O3 layers on FeCrAl metallic supports

Zhao, Su; Zhang, Jizhong; Weng, Duan; Wu, Xiaodong

doi:10.1016/s0257-8972(02)00859-9

Cited by 111 publications

(70 citation statements)

References 7 publications

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“…To check the adherence of this core-shell structure, severe thermal shock tests are performed by quenching from 6008C to 258C (i.e., directly immersing the hot samples into cold water) for 10 times. 62 The total weight loss of samples is only 0.4 wt %, indicating their excellent mechanical strength.…”

Section: Discussion: Heat/mass Transfermentioning

confidence: 97%

Microstructured Al‐fiber@meso‐Al₂O₃@Fe‐Mn‐K Fischer–Tropsch catalyst for lower olefins

et al. 2015

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A thin-sheet Al-fiber@meso-Al 2 O 3 @Fe-Mn-K catalyst is developed for the mass/heat-transfer limited Fischer-Tropsch synthesis to lower olefins (FTO), delivering a high iron time yield of 206.9 mmol CO g 21 Fe s21 at 90% CO conversion with 40% selectivity to C 2 -C 4 olefins under optimal reaction conditions (3508C, 4.0 MPa, 10,000 mL/(gÁh)). A microfibrous structure consisting of 10 vol % 60-mm Al-fiber and 90 vol % voidage undergoes a steam-only-oxidation and calcination to create 0.6 mm mesoporous c-Al 2 O 3 shell along with the Al-fiber core. Active components of Fe and Mn as well as additives (K, Mg, or Zr) are then placed into the pore surface of c-Al 2 O 3 shell of the Al-fiber@meso-Al 2 O 3 composite by incipient wetness impregnation method. Neither Mg-modified nor Zr-modified structured catalyst yields better FTO results than K-modified one, because of their lower reducibility, poorer carbonization property, and fewer basicity. The favorable heat/mass-transfer characteristics of this new approach are also discussed.

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Section: Discussion: Heat/mass Transfermentioning

confidence: 97%

Microstructured Al‐fiber@meso‐Al₂O₃@Fe‐Mn‐K Fischer–Tropsch catalyst for lower olefins

et al. 2015

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“…There are several method for coating FeCrAl substrate such as dip coatings, which combined with some pretreatments, such as growing a number of textured alumina whiskers on the surface of the metal support and shortened the diffusion path before depositing the washcoat [9,10]. The other methods are co-precipitation, sol-gel and spray-pyrolysis methods [11], electrophoretic deposition [12], solution combustion synthesis (SCS) [13], aluminizing technique [14], and hydrothermal method [15,16].…”

Section: Introductionmentioning

confidence: 99%

Diffusion and Bonding Mechanism of Protective γ-Al₂O₃on FeCrAl Foil for Metallic Three-Way Catalytic Converter

et al. 2016

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Abstract. High pollutant level contributed by mobile sources/land transportation that become main problems for the human health. Improving exhaust emission system by improving catalytic converter properties is one of the most effective way to produce healthy air in our environment. It is conducted by two methods i.e. ultrasonic during electroplating (UBDEL) and electroplating process (EL) which are not fully investigated yet as catalytic converter coating process. UBDEL is conducted using sulphamate types electrolyte solution,

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“…High temperature thermal oxidation, washcoat, and its combined process are representative method to have alumina oxide layer on FeCrAl [2][3]. Electroplating process also tried to obtain aluminum oxide layer on FeCrAl after thermal oxidation [4].…”

Section: Introductionmentioning

confidence: 99%

Aluminum Oxide Formation On Fecral Catalyst Support By Electro-Chemical Coating

Yang¹,

Jang²,

Lee³

2015

Archives of Metallurgy and Materials

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FeCrAl is comprised essentially of Fe, Cr, Al and generally considered as metallic substrates for catalyst support because of its advantage in the high-temperature corrosion resistance, high mechanical strength, and ductility. Oxidation film and its adhesion on FeCrAl surface with aluminum are important for catalyst life. Therefore various appropriate surface treatments such as thermal oxidation, Sol, PVD, CVD has studied. In this research, PEO (plasma electrolytic oxidation) process was applied to form the aluminum oxide on FeCrAl surface, and the formed oxide particle according to process conditions such as electric energy and oxidation time were investigated. Microstructure and aluminum oxide particle on FeCrAl surface after PEO process was observed by FE-SEM and EDS with element mapping analysis. The study presents possibility of aluminum oxide formation by electro-chemical coating process without any pretreatment of FeCrAl.

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A method to form well-adhered γ-Al2O3 layers on FeCrAl metallic supports

Cited by 111 publications

References 7 publications

Microstructured Al‐fiber@meso‐Al₂O₃@Fe‐Mn‐K Fischer–Tropsch catalyst for lower olefins

Microstructured Al‐fiber@meso‐Al₂O₃@Fe‐Mn‐K Fischer–Tropsch catalyst for lower olefins

Diffusion and Bonding Mechanism of Protective γ-Al₂O₃on FeCrAl Foil for Metallic Three-Way Catalytic Converter

Aluminum Oxide Formation On Fecral Catalyst Support By Electro-Chemical Coating

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A method to form well-adhered γ-Al2O3 layers on FeCrAl metallic supports

Cited by 111 publications

References 7 publications

Microstructured Al‐fiber@meso‐Al2O3@Fe‐Mn‐K Fischer–Tropsch catalyst for lower olefins

Microstructured Al‐fiber@meso‐Al2O3@Fe‐Mn‐K Fischer–Tropsch catalyst for lower olefins

Diffusion and Bonding Mechanism of Protective γ-Al2O3on FeCrAl Foil for Metallic Three-Way Catalytic Converter

Aluminum Oxide Formation On Fecral Catalyst Support By Electro-Chemical Coating

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Product

Resources

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Microstructured Al‐fiber@meso‐Al₂O₃@Fe‐Mn‐K Fischer–Tropsch catalyst for lower olefins

Microstructured Al‐fiber@meso‐Al₂O₃@Fe‐Mn‐K Fischer–Tropsch catalyst for lower olefins

Diffusion and Bonding Mechanism of Protective γ-Al₂O₃on FeCrAl Foil for Metallic Three-Way Catalytic Converter