Monoliths in Catalysis An Overview

In catalytic applications, monoliths can provide better control of the contact time of reactants and products with the catalyst. This leads to a potential increase in selectivity. Together with the advantages over conventional trickle-bed reactors (pressure-drop surface area, short diffusion lengths), this makes the monohth reactor very suitable for use in consecutive reaction schemes, such as selective oxidation or hydrogenation. Literature dealing with carbon monolith structures is not yet extensive, however, and a limited number of applications have been reported, as shown in Table 11.2. 

G/L Pt-catalyzed selective oxidation of cyclohexanol to adipic acid 413 K, 5.0 MPa Coated 19, 20 

L Lipase-catalyzed acylation of w-butanol with vinyl acetate 283-323 K, 0.1 MPa Coated/ CVD 13, 25 

G Selective catalytic reduction 6NO -b 4NH3 5N2 -b 6H2O VoOs/C 2S02 -b 02 2S03 353-473 K, 0.1 MPa Integral 26-30 

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