T-Plot - Micromeritics ASAP 2020 Confirm Operator's Manual

Appendix C

t-Plot

For each point designated for t-Plot
Thickness for the I
t =
I
t =
I
t =
I
log
t =
where:
t
I
HP1
HP2
HP3
HJP1
HJP2
HJP3
STSA1 = statistical thickness surface area parameter #1
STSA2 = statistical thickness surface area parameter #2
STSA3 = statistical thickness surface area parameter #3
BdB1 = Broekhoff-de Boer parameter #1
BdB2 = Broekhoff-de Boer parameter #2
BdB3 = Broekhoff-de Boer parameter #3
1. deBoer, J.H., et al, J. Catalysis 3, 32, 38, 44, 268 (1964); J. Catalysis 4, 319, 643, 649 (1965); Cranston, R.
and Inkley, F., Adv. Catalysis 9, 143 (1957).
2. Halsey, G., J. Chem. Phys. 16, 931-937 (1948).
3. Harkins, W.D. and Jura, G., J. Chem. Phys. 11, 431 (1943).
4. Magee, R.W., Rubber Chemistry and Technology, Vol 68, No 4, 1995, p. 590; ASTM Standard D6556
5. Broekhoff, J.C.P. and de Boer, J.H., "The Surface Area in Intermediate Pores," Proceedings of the International
Symposium on Surface Area Determination, D.H. Everett, R.H. Ottwill, eds., U.K. (1969).
202-42811-01 - Mar 2011
th point (Å):
HP2 HP3

------------------- -
HP1
 
ln P
rel
I
HJP1 HJP3
------------------------------------------ -
 
HJP2 – log P
rel
I

STSA1 + STSA2 P
rel
BdB1
 
------------- -
P = + BdB2
rel
2
I
t
I
KJS3
KJS1
 
----------------------------------- -
 
KJS2 – log P
rel
th
= thickness for I point
= Halsey parameter #1
= Halsey parameter #2
= Halsey parameter #3
= Harkins and Jura parameter #1
= Harkins and Jura parameter #2
= Harkins and Jura parameter #3
1 calculations, the following calculations are done:
2

+ STSA3P
rel
I
 
exp BdB3*t
I
ASAP 2020 Confirm
(Halsey 2 )
(Harkins and Jura 3 )
4
(STSA Carbon Black )
(Broekhoff-deBoer 5 )
C-11