Page 24 - Principles of Catalyst Development
P. 24
10 CHAPTER 1
4 -
E
o ,tablets
- 3
CL extrudates
<l
/' rings
0::
o 2
I- lobes
u
<l:
0 L I
W
0::
0 1.0 2.0
PARTICLE DIAMETER, em
Figure 1.3. Typical reactor pressure drop for catalyst particles.
100 - 3,000 aIm
~ mesapores .~
~ r< 15nm
;'(
~~ ~ "0 -- low pressure
~
rfJ~ .... ---- high pressure
Particle o
<II
~
.-Imacropores o
a.
WI r>15nm ....
o
....
'"
.Q
Pellet E
::l
Z
10 10
pore radius, r, nm
(a) ( b) (e)
Figure 1.4. Pore structure development in catalyst pellets. (a) Pellet production. (b) Origin of
pores. (c) Pore size distribution.
