Page 179 - Principles of Catalyst Development

CATALYST CHARACTERIZATION 167
-_H 2 S

POISON PULSING VALVE

BUBBLE
SAMPLING FLOW
LOOP - METERS

REFERENCE SIDE
GAS CHROMATOGRAPH
GAS HANDLING SYSTEM
Figure 7.26. Pulse reactor apparatus ror poison titration measurements using hydrogen sulfide.

1.0,-----

w
f-
e(
a:
w
>
;::
e(
--'
w
a:
NUMBER OF
OL---------------------~~--~~~-~
POISON ADSORBED, MOLECULES
Figure 7.27. Typical results ror the titration or metal sites by a poison.