Table 1 Sorption properties of selected zeolites for C 2 -C 4 hydrocarbons
Material IZA code Gas
D
a
T/P
b
α
c
N
d T/P
b
α
c
Ref(s).
Na-A
LTA
C 2 H 4 –
–
1.5 293/1.0
[77]
C 2 H 6 –
–
–
0.4 298/1.0 3.75 [77]
C 3 H 6 5.9 Â 10
À12
–
1.9 303/À
[83, 85]
C 3 H 8 2.7 Â 10
À14
–
220
~ 0 303/À –
[83, 85]
Ag-A
LTA
C 2 H 4 –
–
2.2 303/1.0
[84]
C 2 H 6 –
–
~ 0 303/1.0 –
[81]
Ca-A
LTA
C 2 H 4 –
–
2.8 303/1.0
[77]
C 2 H 6 –
–
2.2 303/1.0 1.27 [77]
C 3 H 6 7.5 Â 10
À7
323/À
3.3 323/1.0
[87]
C 3 H 8 4.4 Â 10
À6
323/À 0.17
3.1 323/1.0 1.06 [87]
Na-X
FAU
C 2 H 4 –
–
3.6 323/1.0
[79]
C 2 H 6 –
–
2.8 323/1.0 1.28 [79]
C 3 H 6 –
–
3.7 323/1.0
[79]
C 3 H 8 –
–
3.1 323/1.0 1.19 [79]
Si-ZSM-5 MFI
C 2 H 4 –
–
2.1 305/2.0
[75]
C 2 H 6 –
–
2.3 305/2.0 0.91 [75]
Si-CHA
CHA
C 2 H 4 3.6 Â 10
À2
303/0.8
1.8 303/0.8
[101]
C 2 H 6 0.48 Â 10
À8 301/À 7.5 Â 10
6
2.1 301/1.0 0.86 [94]
C 3 H 6 4.6 Â 10
À4
303/0.8
2.8 303/0.8
[101]
C 3 H 8 1.0 x 10
À8
303/À 4.6 Â 10
4
– –
–
[101]
ZSM-58 DDR
C 3 H 6 1.2 Â 10
À4
303/
0.87
– –
[101]
C 3 H 8 9.6 Â 10
À9
303/
0.87
0.13 Â 10
5 – –
[101]
AlPO 4 –14 AFN
C 3 H 6 3.1 Â 10
À3
393/À
– –
[92]
C 3 H 8 1.0 Â 10
À3
393/À 3.1
– –
[92]
ITQ-3
ITE
C 2 H 4 >1.1 Â 10
À2 353/
0.87
– –
[101]
C 2 H 6 >1.4 Â 10
À2 353/
0.87
–
– –
[101]
C 3 H 6 1.5 Â 10
À3
303/0.8
1.4 313/
0.87
[101]
C 3 H 8 2.2 Â 10
À6
303/0.8 0.68 Â 10
3 – –
[101]
ITQ-12
ITW
C 2 H 4 –
–
0.7 303/
0.87
[97]
C 3 H 6 5.6 Â 10
À2
353/
0.87
0.9 353/
0.87
0.79 [97]
C 3 H 8 2.0 Â 10
À8
353/0.8 2.8 Â 10
6
– –
[97]
ITQ-29
LTA
C 2 H 4 21.4 Â 10
À8 301/1.0
1.6 301/1.0
[94]
C 2 H 6 20.9 Â 10
À8 301/1.0 1.02
1.6 301/1.0 1
[94]
C 3 H 6 0.5 Â 10
À11
301/1.0
2.5 301/À
[94, 98]
C 3 H 8 –
–
–
2.2 298/À 1.14 [98]
ITQ-32
IHW
C 3 H 6 1.1 Â 10
À4
333/0.3
1.2 333/1.0
[100]
(continued)
Small Gas Adsorption and Separation in Small-Pore Zeolites
21