Freundlich Isotherm - Micromeritics ASAP 2020 Confirm Operator's Manual

ASAP 2020 Confirm

Freundlich Isotherm

The Freundlich isotherm has the form:
Q
----- -
Q
S
where
Q
Q
S
C
m
The pressure is absolute; typically, m > 1. In terms of quantity adsorbed,
Q
Taking the log of both sides yields:
log
C-38
1/m
= CP
= quantity of gas adsorbed
= quantity of gas in a monolayer
= temperature-dependent constant
= temperature-dependent constant
1/m
= Q CP
S
1
--- -
Q = log Q C + log
S
m
P
Appendix C
202-42811-01 - Mar 2011