Find the right catalyst support for your application and get samples with the Catalynk Chemistry Set.
Fixed Bed Reactor
General features: The catalytic particles are packed
in their positions in a fixed bed reactor. It is most practical for large-scale,
relatively slow reactions not involving large heat generation or consumption.
The fluid moves downward through the reactor in nearly plug flow.
Reaction phases : Gas or liquid
Operation : Continuous
Particle size and shape : Pressure drop determines particle size
and shape. Larger particles will produce less pressure drop, more diffusion
Heat of reaction : Moderate. Intermediate cooling or heating may
be necessary for highly exothermic or endothermic reactions
Useful equation : Ergun Equation for calculating pressure drop
(ΔP) over fixed bed of length L
- Direct oxidation of methanol to formaldehyde over ferric molybdate
catalyst at 330~380 ° C, 1.2 ~ 1.5 bar, and 7000~12000 h-1 GHSV.
- Production of vinyl acetate over palladium/silica catalyst at 150-175
°C and about 5-10 bar.
- J.F.Le Page, Applied heterogeneous catalysis-design, manufacture,
use of solid catalysts, Gulf Publishing Co., 1987.
- C.N.Satterfield, Heterogeneous Catalysis in industrial practice,
2nd Ed., McGraw-Hill Inc., 1991.
- R.J.Wijngaarden, A.Kronberg, and K.R.Westerterp, Industrial catalysis-optimizing
catalysts and processes, Wiley-VCH, 1998.