Supplementary Material for PCCP
This journal is © The Owner Societies 2003
Revised manuscript submitted to Phys. Chem. Chem. Phys. for publication, Oct. 2003
AN INVERSE GAS CHROMATOGRAPHY STUDY OF
CALCINATION AND SURFACE MODIFICATION OF
KAOLINITE CLAYS
Supplementary data
Figure S1: Plot of RTlnVn versus number of carbon atoms (from alkane probes) for CAC.
Figure S2: Plot of RTlnVn versus number of carbon atoms (from alkane probes) for CACSil.
Figure S3: Plot of Ga versus log Po for CAC to determine specific interaction energies.
Ansari & Price
2
IGC of Kaolinites
Figure S1: Plot of RTlnVn versus number of carbon atoms (from alkane probes) for CAC.
-3
-1
RT ln(VnkJ
/ cm
mol) / kJ mol
25
80 °C
90 °C
100 °C
110 °C
120 °C
130 °C
140 °C
20
15
10
5
0
4
5
6
7
Carbon number
8
9
Ansari & Price
3
IGC of Kaolinites
Figure S2:
Plot of RTlnVn versus number of carbon atoms (from alkane probes) for CAC-Sil.
-3
-1
RT ln(Vn / cm
RT ) / kJ mol
25
20
15
80°C
90°C
100°C
110°C
120°C
130°C
140°C
10
5
0
5
6
7
8
Carbon number
9
10
11
Ansari & Price
4
IGC of Kaolinites
Figure S3:
Plot of Ga versus log Po for CAC to determine specific interaction energies.
30
Octene
25
Ga / GkJ mol-1
Octane
20
Heptane
Hexene
15
Tetrachloromethane
Hexane
Pentene
Cyclohexane
10
Pentane
5
0
1.5
1.7
1.9
2.1
2.3
2.5
logln
(p / torr)
2.7
2.9
3.1