Micromeritics ASAP 2460, Operator'S Manual, Page: 365 / 468

ASAP 2460 Operator’s Manual Appendix C
246-42800-01 - Aug 2013 C-41
Mean Equivalent Pore Width (Å):
Micropore surface area (m
2
/g):

is calculated by a polynomial approximation over the domain 0

×

1:
where
b
1
= -0.57719 1652
b
2
= 0.98820 5891
b
3
= -0.89705 6937
b
4
= 0.91820 6857
b
5
= -0.75670 4078
b
6
= 0.48219 9394
b
7
= -0.19352 7818
b
8
= 0.03586 8343
and where
Equivalent Pore Diameter (Å):
D
mean
2
10
3
nm
3
 
Å
3


E

0
-----------------------------------
1/3

3 N 1 +
3 N
----------------
 
 
----------------------------------------------

=
SDA 1000 2.0 W
0
 
E
0
k
------
1/3
 
3 N 1 +
3 N
----------------
 
 

=

x 1 +
 
1 b
1
x b
2
x
2
b
3
x
3
b
4
x
4
b
5
x
5
b
6
x
6
b
7
x
7
b
8
x
8 
x

x 3 10
7 –   
+ + + + + + + + + =
x 1 +
3 N 1 +
3 N
----------------
 
 
=
D
i
2
10
3
nm
3
Å
3


E

0
--------------------------------
 
 
 
N
–
W

i

W
0
 
ln – ln
--------------------------------------------
1/3N
=