Temperature and Pressure Dependence of Gas Permeation in a Microporous Tröger’s Base Polymer
Abstract
:1. Introduction
2. Experimental Section
3. Results
3.1. Permeability
3.2. Diffusivity and Solubility Coefficients
3.3. Effect of Pressure
3.4. Effect of Temperature
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Conflicts of Interest
References
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Gas | Kinetic Diameter (d) (Å) | Critical Temperature (Tc) (K) |
---|---|---|
H2 | 2.89 | 33.2 |
N2 | 3.64 | 126.2 |
CH4 | 3.8 | 190.6 |
CO2 | 3.3 | 304.2 |
30 °C, 1 bar | N2 | H2 | CO2 | CH4 | |
---|---|---|---|---|---|
PIM-1 [8] | Permeability (Barrer) | 252 | 2936 | 5303 | 440 |
Selectivity CO2/Gas | 21 | 1.8 | - | 12 | |
Selectivity H2/Gas | 12 | - | 0.5 | 6.7 | |
PIM-EA(Me2)-TB [16] | Permeability (Barrer) | 525 | 7760 | 7140 | 699 |
Selectivity CO2/Gas | 13.6 | 0.9 | - | 10 | |
Selectivity H2/Gas | 14.8 | - | 1.1 | 11 | |
PIM-EA(H2)-TB (This study) | Permeability (Barrer) (± Error) | 238 (± 3%) | 5188 (± 1%) | 5990 (± 1%) | 372 (± 3%) |
Selectivity CO2/Gas | 25 | 1 | - | 16 | |
Selectivity H2/Gas | 22 | - | 1 | 14 |
30 °C, 1 bar | N2 | H2 | CO2 | CH4 |
---|---|---|---|---|
D (10−7 cm2/s) (± Error) | 9.7 (± 12%) | 500.0 (± 9%) | 8.2 (± 3%) | 1.3 (± 11%) |
S (cm3(STP)/(cm3·cmHg)) (± Error) | 3 × 10−2 (± 15%) | 9 × 10−3 (± 10%) | 9 × 10−1 (± 4%) | 3 × 10−1 (± 14%) |
Selectivity, 30 °C | H2/CO2 | H2/N2 | H2/CH4 | CO2/N2 | CO2/CH4 | CH4/N2 |
---|---|---|---|---|---|---|
1 bar | 1 | 22 | 14 | 25 | 16 | 2 |
5 bar | 1 | 20 | - | 24 | - | - |
10 bar | 1 | 20 | 14 | 25 | 16 | 2 |
20 bar | - | - | - | 23 | 14 | 2 |
Gas | EP (kJ/mol) | |||
---|---|---|---|---|
PIM-EA(H2)-TB (This Study) | PIM-1 [26] | PIM-TMN-Trip [12] | PTMSP [26] | |
H2 | 0.5 | −0.4 | −2.8 | −2.1 |
N2 | 8.6 | 14.3 | 4.4 | −3.5 |
CH4 | 13.1 | 19.4 | 9.5 | −5.3 |
CO2 | −8.6 | −1 | −7.7 | −11.7 |
1 bar | EP (kJ/mol) | ED (kJ/mol) | ΔHs (kJ/mol) |
---|---|---|---|
CO2 | −8.6 | 8.1 | −16.7 |
N2 | 8.6 | 18.5 | −9.9 |
H2 | 0.5 | 5.2 | −4.6 |
CH4 | 13.1 | 17.9 | −4.8 |
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Lasseuguette, E.; Malpass-Evans, R.; Carta, M.; McKeown, N.B.; Ferrari, M.-C. Temperature and Pressure Dependence of Gas Permeation in a Microporous Tröger’s Base Polymer. Membranes 2018, 8, 132. https://doi.org/10.3390/membranes8040132
Lasseuguette E, Malpass-Evans R, Carta M, McKeown NB, Ferrari M-C. Temperature and Pressure Dependence of Gas Permeation in a Microporous Tröger’s Base Polymer. Membranes. 2018; 8(4):132. https://doi.org/10.3390/membranes8040132
Chicago/Turabian StyleLasseuguette, Elsa, Richard Malpass-Evans, Mariolino Carta, Neil B. McKeown, and Maria-Chiara Ferrari. 2018. "Temperature and Pressure Dependence of Gas Permeation in a Microporous Tröger’s Base Polymer" Membranes 8, no. 4: 132. https://doi.org/10.3390/membranes8040132