Extension of preparation methods employed with ceramic materials to carbon honeycomb monoliths

Originally prepared carbon-based honeycomb monoliths with potential application as VOCs adsorbents

“…Subsequently, carbonization (Ar, 840°C, 1 h) and activation (H 2 O, 250 Torr/Ar, 860°C, up to a burn-off degree of 15 wt%) treatments were carried out to eliminate the additives and to develop the porous structure required for application of the monoliths as adsorbents. Further details of the experimental methodology to obtain coal-based honeycomb monoliths have been previously reported [10]. Fig.…”

“…In this sense, we have recently extended preparation methods based on the techniques that are usually employed with ceramic materials to carbonaceous pastes, what has allowed us to obtain, among other compositions, integral 90 wt% carbon-honeycomb lab-scale monoliths starting from coal [10]. This original experimental approach only implies, in contrast to other methods, the measurement of plastic properties just related with the humidity of the paste to be extruded [11].…”

Easy extrusion of honeycomb-shaped monoliths using Moroccan natural clays and investigation of their dynamic adsorptive behavior towards VOCs

“…At the beginning, the raw clays were crushed and passed through a 180 m sieve. Honeycomb monoliths extrusion was achieved following the methodology previously applied for carbon [8] and clay [5]. Accordingly, it is necessary to know the plasticity parameters of the resulting paste, particularly, the liquid limit (LL) and the plasticity index (PI).…”

“…The adopted procedure is based on extension of an original method, generally, employed to extrude ceramics. The approach permits to meet adequate plasticity conditions of the pastes allowing extrusion and immediate conformation into rigid structure under honeycomb-shaped monolith [8]. This finding is of interest because it allows combination of several advantages such as those of natural clays cost and physicochemical properties as well as those offered by the use of monolith shape.…”

Non-cordierite clay-based structured materials for environmental applications

“…In a similar way, there are many studies in which clays, although part of a structured support, are not the majority component but mere binders to shape other materials into ceramic bodies. The list of these materials is long and includes carbon, mainly activated [13,14] but also in the form of coals [15], carbon black [16] and even carbon fibres [17], TiO 2 [18][19][20][21], Al 2 O 3 [18,22], zeolites [23,24], mullite [25], SiC [26], Al 2 O 3 -SiO 2 [19,27], ZrSiO 4 [28], FeTiO 3 [29], B 2 O 3 [30], Fe 2 O 3 -Cr 2 O 3 [31], Al 2 TiO 5 [32], LiAlSi 4 O 10 [33], etc.…”