Mixed Matrix Membranes of Boron Icosahedron and Polymers of Intrinsic Microporosity (PIM-1) for Gas Separation
Abstract
:1. Introduction
2. Theory and Background
2.1. Gas Sorption
2.1.1. Static Gas Sorption
2.1.2. Dynamic Gas Sorption
2.2. Gas Permeation
3. Materials
4. Experimental Section
4.1. Pristine PIM-1 Synthesis and Mixed Matrix Membranes Preparation
4.2. Thermal Gravimetric Analysis (TGA)
4.3. Scanning Electron Microscopy (SEM)
4.4. Density Measurements
4.5. Gas Transport Properties
4.6. Gas Sorption
4.6.1. Static Sorption Experiments
4.6.2. Dynamic Sorption Experiments
5. Results and Discussion
5.1. Inorganic Particle Characterization
5.2. Mixed Matrix Membranes (MMMs) Characterization
5.3. Gas Permeation Properties
5.3.1. Effects of K2B12H12 Content on PIM1/K2B12H12 MMM Gas Separation Performance
5.3.2. Influence of Temperature on the Gas Separation Performance of PIM1/K2B12H12 MMMs
5.4. Gas Sorption
5.4.1. Static Gas Sorption
5.4.2. Dynamic Gas Sorption
6. Conclusions
Reference
Acknowledgments
Author contribution
Conflicts of interest
References
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Membrane | Volume Fraction φIP (%) | K2B12H12 Loading (%) | w700 (%) | ρ (g/cm3) |
---|---|---|---|---|
PIM-1 | 0 | 0 | 32.17 | 1.066 |
PIM-2.5 K2B12H12 | 2.58 | 2.5 | 32.46 | 1.078 |
PIM-5 K2B12H12 | 5.16 | 5 | 33.10 | 1.077 |
PIM-10 K2B12H12 | 10.21 | 10 | 33.20 | 1.072 |
PIM-20 K2B12H12 | 20.53 | 20 | 34.43 | 1.067 |
K2B12H12 | - | - | 0.6 | 1.031 * |
Membrane | Permeability (Barrer) | ||||
---|---|---|---|---|---|
H2 | N2 | O2 | CO2 | CH4 | |
PIM-1 | 3274 ± 5 | 483 ± 10 | 1396 ± 13 | 9896 ± 28 | 789 ± 15 |
PIM1-2.5 K2B12H12 MMM | 3347 ± 8 (3%) | 562 ± 11 (16%) | 1539 ± 12 (10%) | 11598 ± 20 (17%) | 974 ± 18 (23%) |
PIM1-5 K2B12H12 MMM | 3707 ± 9 (13%) | 641 ± 10 (33%) | 1675 ± 11 (20%) | 12036 ± 21 (22%) | 1148 ± 16 (45%) |
PIM1-10 K2B12H12 MMM | 4025 ± 8 (22%) | 772 ± 9 (60%) | 1831 ± 14 (31%) | 12954 ± 23 (31%) | 1436 ± 16 (82%) |
PIM1-20 K2B12H12 MMM | 3436 ± 7 (5%) | 607 ± 12 (25%) | 1600 ± 14 (14%) | 11729 ± 23 (18%) | 1123 ± 14 (42%) |
Membrane | Permselectivity | |||||
---|---|---|---|---|---|---|
H2/N2 | H2/CH4 | CH4/N2 | O2/N2 | CO2/N2 | CO2/CH4 | |
PIM-1 | 6.8 | 4.2 | 1.6 | 2.9 | 20.5 | 12.5 |
PIM1-2.5 K2B12H12 MMM | 6.0 | 3.4 | 1.7 | 2.7 | 20.7 | 11.9 |
PIM1-5 K2B12H12 MMM | 5.8 | 3.2 | 1.8 | 2.6 | 18.8 | 10.5 |
PIM1-10 K2B12H12 MMM | 5.2 | 2.8 | 1.9 | 2.4 | 16.8 | 9.0 |
PIM1-20 K2B12H12 MMM | 5.6 | 3.0 | 1.8 | 2.6 | 19.3 | 10.4 |
Membrane | EP (kJ/mol) | |
---|---|---|
N2 | CO2 | |
PIM-1 | 18.5 | −3.3 |
PIM1-2.5 K2B12H12 MMM | 13.7 | −4.0 |
PIM1-5 K2B12H12 MMM | 6.4 | −4.6 |
PIM1-10 K2B12H12 MMM | 5.5 | −5.0 |
PIM1-20 K2B12H12 MMM | 2.4 | −3.1 |
Feed Gas | K2B12H12 Loading (wt %) | Dual Mode Sorption Model Parameter | ||
---|---|---|---|---|
kD | C′H | b | ||
CO2 | 0 | 2.330 | 104.630 | 0.415 |
2.5 | 2.440 | 105.830 | 0.422 | |
5 | 2.530 | 113.750 | 0.440 | |
10 | 2.600 | 120.105 | 0.491 | |
20 | 2.58 | 115.81 | 0.444 | |
CH4 | 0 | 0.581 | 62.097 | 0.135 |
2.5 | 0.59 | 63.957 | 0.141 | |
5 | 0.604 | 65.042 | 0.154 | |
10 | 0.627 | 66.741 | 0.167 | |
20 | 0.611 | 65.412 | 0.151 |
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Khan, M.M.; Shishatskiy, S.; Filiz, V. Mixed Matrix Membranes of Boron Icosahedron and Polymers of Intrinsic Microporosity (PIM-1) for Gas Separation. Membranes 2018, 8, 1. https://doi.org/10.3390/membranes8010001
Khan MM, Shishatskiy S, Filiz V. Mixed Matrix Membranes of Boron Icosahedron and Polymers of Intrinsic Microporosity (PIM-1) for Gas Separation. Membranes. 2018; 8(1):1. https://doi.org/10.3390/membranes8010001
Chicago/Turabian StyleKhan, Muntazim Munir, Sergey Shishatskiy, and Volkan Filiz. 2018. "Mixed Matrix Membranes of Boron Icosahedron and Polymers of Intrinsic Microporosity (PIM-1) for Gas Separation" Membranes 8, no. 1: 1. https://doi.org/10.3390/membranes8010001