Monolith Reactors for Intensified Processing in Green Chemistry - Process Intensification for Green Chemistry - page 191

Acknowledgment

I am grateful to EPSRC for funding and to Prof. Mike Winterbottom and Drs Mark
Simmons, Reyna Natividad, Robert Fishwick, Idoko Ochuma and Andreas Tsoligkas for
their contributions to the work reviewed in this chapter.

Nomenclature

a Interfacial area, m 2 /m 3
C Pressure drop per unit length, Pa/m
Ca Capillary number
D

Diffusion coefficient, m 2 /s

D Diameter, m

k Mass-transfer coefficient, m/s

L Length, m

D p Pressure drop, Pa

v 0 Superficial velocity, m/s

V Velocity, m/s

Greek Letters

d Film thickness, m

Voidage

e

m Dynamic viscosity, Pa.s

Density, kg/m 3

r

s Surface tension, N/m

Subscripts and Superscripts

B Bubble

C Capillary

G Gas

L Liquid

OV Overall

S Solid

Slug Slug

TP Two-phase

References

(1) M. T. Kreutzer, J. J. W. Bakker, F. Kapteijn, J. A. Moulijn and P. J. T. Verheijen, Scaling up
multiphase monolith reactors: Linking residence time distribution and feed maldistribution.
Ind. Eng. Chem. Res., 44, 4898-4913 (2005).
(2) C. M. Mitchell and P. J. A Kenis, Ceramic microreactors for on-site hydrogen production from
high temperature steam reforming of propane. Lab Chip, 6, 1328-1337 (2006).