Stacked wire-mesh monoliths for VOCs combustion: Effect of the mesh-opening in the catalytic performance

• Published in: Catalysis today Vol. 296; pp. 76 - 83
• Main Authors: Sanz, Oihane, Banús, Ezequiel D., Goya, Aintzane, Larumbe, Haizea, Delgado, Juan José, Monzón, Antonio, Montes, Mario
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.11.2017
• Subjects: Mesh-opening; Pt/OMS-2; VOCs abatement; Wire-mesh monoliths; Wire-mesh monoliths; VOCs abatement; Pt/OMS-2; Mesh-opening
• ISSN: 0920-5861; 1873-4308
• DOI: 10.1016/j.cattod.2017.05.054

[Display omitted] •Stacked wire-mesh monoliths are very active for VOCs combustion.•Wire-mesh geometry influences directly the coating adhesion of the catalyst.•Wire-mesh monoliths present better performance than parallel channel monoliths.•The mass transfer to the catalyst surface plays a major role in VOCs abatement. Structured reactors based on low cost metallic wire-mesh substrates of highly enhanced transport properties can be an interesting alternative to parallel channel monolithic reactors. In this work stacked wire-mesh monoliths were studied for volatile organic compounds elimination. Monoliths of different mesh-opening were homogeneously and adherently dip-coated with Pt/Manganese Octahedral Molecular Sieve (OMS-2) bifunctional catalyst. The catalytic activity was tested in toluene and methanol complete oxidation reactions. Catalytic activity increases using stacked wire-mesh monoliths instead of parallel channel monoliths and decreases when increasing the wire-mesh opening, showing the importance of the mass-transfer phenomena (contact between the gas phase and the solid catalyst).