Effects of Slurry Composition and Interfacial Adhesion of Monolithic Coatings on FeCrAl Honeycombs
Source abstract
Abstract
Excellent coating adhesion is a crucial requirement for monolithic catalysts. Within this investigation, a Design of Experiments (DOEs) Taguchi approach was leveraged to construct a 9-factor-3-level matrix encompassing 27 parallel experiments. This framework was employed to scrutinize the pivotal elements influencing the adhesion of FeCrAl metal-based integral coatings, which were prepared using the slurry method. Moreover, an unprecedented endeavor was made to scrutinize the mechanism of coating delamination from the vantage points of macroscopic slurry, microscopic coatings, and nanoscale interfaces. The findings reveal the following: (1) The inclusion of a high-acidity additive (>5%) emerges as one of the pivotal factors in achieving superior adhesion, particularly when the boehmite content exceeds 1%. (2) The existence of binder-filled interstices within the coating, smaller by 1–2 orders of magnitude than the carrier particles, significantly contributes to heightened adhesion. (3) A bonding region of approximately 5 nm is present at the interfaces between carrier particles, resulting in augmented adhesion.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: High-Temperature Coating Behaviors · Advanced materials and composites · Additive Manufacturing and 3D Printing Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China
Funding
Fundamental Research Funds for the Central Universities
References (46)
Show source-provided references
1. Structured Packings for Multiphase Catalytic Reactors10.1021/ie800067r ↗
2. Effectiveness factor correlations from simulations of washcoat nickel catalyst layers for small-scale steam methane reforming applications10.1016/j.ijhydene.2018.06.059 ↗
3. A numerical study of the effectiveness factors of nickel catalyst pellets used in steam methane reforming for residential fuel cell applications10.1016/j.ijhydene.2014.04.067 ↗
4. One-Step Fabrication of Microchannels Lined with a Metal Oxide Coating10.1021/acsami.6b00413 ↗
5. Preparation of novel helical liquid-bridge flow structured catalyst and its catalytic performance in the hydrogenation of 2-ethyl-anthraquinone10.1016/j.cej.2023.142320 ↗
6. High efficiency of formaldehyde removal and anti-bacterial capability realized by a multi-scale micro–nano channel structure in hybrid hydrogel coating cross-linked on microfiber-based polyurethane10.1021/acsami.3c07210 ↗
7. A facile method to enhance the uniformity and adhesion properties of water-based ceramic coating layers on hydrophobic polyethylene separators10.1016/j.apsusc.2017.07.276 ↗
8. Fabrication of Tunable, Stable, and Predictable Superhydrophobic Coatings on Foam Ceramic Materials10.1021/acs.iecr.6b02541 ↗
9. Self-supported spray-coated nife-ldh catalyst on a stainless-steel substrate for efficient oxygen evolution reaction10.1021/acsami.3c13737 ↗
10. Process intensification in multifunctional reactors: A review of multi-functionality by catalytic structures, internals, operating modes, and unit integrations10.1016/j.cep.2021.108561 ↗
11. Mathematical modeling of monolith catalysts and reactors for gas phase reactions10.1016/j.apcata.2008.04.010 ↗
12. Analysis of Ru/La-Al2O3 catalyst loading on alumina monoliths and controlling regimes in methane steam reforming10.1016/j.cej.2017.11.154 ↗
13. High sintering-/coke-resistance Ni@ SiO2/Al2O3/FeCrAl-fiber catalyst for dry reforming of methane: One-step, macro-to-nano organization via cross-linking molecules10.1039/C7CY01491K ↗
14. Weng, J., Lu, X., and Gao, P.X. (2017). Nano-array integrated structured catalysts: A new paradigm upon conventional wash-coated monolithic catalysts?. Catalysts, 7.10.3390/catal7090253 ↗
15. Mechanical stability of monolithic catalysts: Improving washcoat adhesion by FeCrAl Alloy substrate treatment10.1016/j.jiec.2017.07.010 ↗
16. Investigation of a Ni-based steam reforming catalyst developed for the coating of microstructures10.1016/j.ces.2007.02.031 ↗
17. Development of a centrifugal coating method to load catalyst washcoat onto porous substrates with high uniformity and adhesive strength10.1016/j.surfcoat.2022.128204 ↗
18. Preparation and characterization of porous alumina-based catalyst coatings in microchannels10.1016/j.ces.2007.02.034 ↗
19. Different binders in FCC catalyst preparation: Impact on catalytic performance in VGO cracking10.1007/s11164-018-3700-x ↗
20. Enhanced performance of catalyst pellets for methane dry reforming by engineering pore network structure10.1016/j.cej.2019.03.125 ↗
21. Experimental investigation into flow boiling heat transfer and pressure drop in porous coated microchannels10.1016/j.ijheatmasstransfer.2023.124734 ↗
22. NiMg/ceria-zirconia cylindrical pellet catalysts for tri-reforming of surrogate biogas10.1021/acs.iecr.7b03669 ↗
23. Mass transfer advantage of hierarchical structured cobalt-based catalyst pellet for Fischer-Tropsch synthesis10.1002/aic.17226 ↗
24. Pellet Size-Induced Increase in Catalyst Stability and Yield in Zeolite-Catalyzed 2-Butene/Isobutane Alkylation10.1021/acs.iecr.1c04186 ↗
25. The effect of catalyst pellet size on nickel carbonyl-induced particle sintering under low temperature CO methanation10.1016/j.apcata.2015.12.034 ↗
26. Preparation and characterization of dip-coated γ-alumina based ceramic materials on FeCrAl foils10.1016/j.surfcoat.2007.01.023 ↗
27. Preparation of Pt/γ-Al2O3 catalyst coating in microreactors for catalytic methane combustion10.1016/j.cej.2019.122424 ↗
28. Influence of Ce0.68Zr0.32O2 solid solution on depositing γ-alumina washcoat on FeCrAl foils10.1007/BF02709359 ↗
29. Nd-or Zr-modified CuO–CeO2/Al2O3/FeCrAl monolithic catalysts for preferential oxidation of carbon monoxide in hydrogen-rich gases10.1016/j.apsusc.2008.01.168 ↗
30. Effect of intermediate layer on the activity and adhesion stability of metal monolith supported LaMn-hexaaluminate catalyst for methane combustion10.1016/S1002-0721(10)60537-6 ↗
31. Mechanical Stability of Monolithic Catalysts: The Influence Mechanism of Primer on the Washcoat Adhesion to the Metallic Substrates
32. Adhesion Properties of Milled CuO-CeO2/γ-Al2O3 on Metallic Substrate for Automotive Catalytic Converter10.1080/02726351.2014.920442 ↗
33. Excellent adhesion of protective α-Al2O3 layer formed on ODS FeCrAl alloys10.1016/j.surfcoat.2023.129787 ↗
34. Comparison of design of experiments via traditional and Taguchi method10.1142/S0219686716500116 ↗
35. Highly efficient monolithic catalyst with excellent adhesion of SiO2 coating for catalytic hydrogenation in the rotating packed bed reactor10.1021/acs.iecr.2c03142 ↗
36. Italiano, C., Ashraf, M.A., Pino, L., Moncada Quintero, C.W., Specchia, S., and Vita, A. (2018). Rh/CeO2 Thin Catalytic Layer Deposition on Alumina Foams: Catalytic Performance and Controlling Regimes in Biogas Reforming Processes. Catalysts, 8.10.3390/catal8100448 ↗
37. Catalytic combustion of residual methane on alumina monoliths and open cell foams coated with Pd/Co3O410.1016/j.cej.2017.05.149 ↗
38. A study on fecral foam as effective catalyst support under thermal and mechanical stresses10.1016/j.surfcoat.2012.08.017 ↗
39. Optimization of stirrer parameters by Taguchi method for a better ceramic particle stirring performance in the production of Aluminum Alloy Matrix Composite10.1080/23311916.2022.2154005 ↗
40. Alumina: A key-component of structured catalysts for process intensification10.1080/0371750X.2012.738481 ↗
41. Washcoating of Ni/MgAl2O4 Catalyst on FeCralloy Monoliths for Steam Reforming of Methane10.1021/acs.energyfuels.6b03423 ↗
42. Claude, V., Mahy, J.G., Lohay, T., Geens, J., and Lambert, S.D. (2022). Coating Process of Honeycomb Cordierite Support with Ni/Boehmite Gels. Processes, 10.10.3390/pr10050875 ↗
43. High-loading washcoat of γ-alumina on FeCrAlloy mesh with acid-free slurry10.1016/j.surfcoat.2020.126394 ↗
44. Preparation of monolithic catalysts10.1081/CR-120001807 ↗
45. Microreactor coating with Au/Al2O3 catalyst for gas-phase partial oxidation of ethanol: Physico-chemical characterization and evaluation of catalytic properties10.1016/j.cej.2019.122179 ↗
46. Preparation of palygorskite coated cordierite as supports of manganese-based catalysts for low-temperature NOx removal from diesel exhausts by NH3 selective catalytic reduction10.1039/C6RA01383J ↗