Langmuir Surface Area - Micromeritics ASAP 2020 Confirm Operator's Manual

Appendix C
Volume of the Monolayer (cm
V
M
Error of the BET Surface Area (m
BET

Langmuir Surface Area

For each point designated for surface area calculations, the Langmuir
culated as follows:
L
I
where L is in units of g/cm
I
A least-squares fit is performed on the (P
pendent variable and L
a. Slope (S g/cm
b. Y-intercept (Y
c. Error of the slope (S
d. Error of the y-intercept (YI
e. Correlation coefficient (Cc)
Using the results of the above calculations, the following can be calculated:
1. Langmuir, I., J. Am. Chem. Soc. 38, 2267 (1916); J. Am. Chem. Soc. 40, 1361 (1918); Phys. Rev 8, 149 (1916).
202-42811-01 - Mar 2011
3 /g STP):
1 1
------------------- - ------------------ -
= =

C Y S + Y
INT INT
 
SA S
BET ERR
-------------------------------------------------------------------- -
=
ERR
Y
INT
P
rel
---------- -
=
I
N
ads
I
3 STP
is the dependent variable. The following are calculated:
I
3 STP)
g/cm 3 STP)
INT
g/cm
ERR
2
/g):
0.5
2 2

+ YI
ERR
+ S
I ,L ) designated pairs where P
rel I
3 STP)
g/cm 3 STP)
ERR
ASAP 2020 Confirm
1 transformation is cal-
I is the inde-
rel
C-9