Carbon-Based Honeycomb Monoliths for Environmental Gas-Phase Applications

Abstract

Honeycomb monoliths consist of a large number of parallel channels that provide high contact efficiencies between the monolith and gas flow streams. These structures are used as adsorbents or supports for catalysts when large gas volumes are treated, because they offer very low pressure drop, short diffusion lengths and no obstruction by particulate matter. Carbon-based honeycomb monoliths can be integral or carbon-coated ceramic monoliths, and they take advantage of the versatility of the surface area, pore texture and surface chemistry of carbon materials. Here, we review the preparation methods of these monoliths, their characteristics and environmental applications.

Developmental Study of Soot-Oxidation Catalysts for Fireplaces: The Effect of Binder and Preparation Techniques on Catalyst Texture and Activity

“…In systems designed for cars, the catalyst is attached to a honeycomb structure by dipping, painting or spraying it with ceramic-or metal-substrate materials. Special materials are used to bind the catalyst to the substrate surface to ensure that it remains attached and tolerates stress [27,28]. These binders increase the adhesion between the substrate and catalyst materials, and act as joining glues.…”

Percolation Model for Renewable-Carbon Doped Functional Composites in Packaging Application: A Brief Review

“…Besides the aforementioned two types of carbon, impregnated renewable carbon and extruded renewable carbon are also popular in the market. As for their application, the former can be used for air-pollution control [19], while the latter is suitable for gas-phase applications [20]. Besides the aforementioned two types of carbon, impregnated renewable carbon and extruded renewable carbon are also popular in the market.…”

Engineering and Safety Issues

“…CNTs and CNFs layers were formed on metallic (mostly Ni), 2-11 carbon, 12,13 or SiC [14][15][16] foams, reticulated vitreous carbon foam (hairy foam), 17,18 fibrous/sintered metal filters, [19][20][21][22][23][24] carbon, 25 oxide (mostly cordierite) [26][27][28][29][30][31][32][33][34][35][36][37][38] or metallic 39 monoliths, or carbon/graphite felts [40][41][42][43][44][45][46][47][48][49][50][51][52] (Figure 10.3 and Table 10.1). This helps to keep diffusion distances short.…”