Enhanced CH4/N2 Separation Efficiency of UiO-66-Br2 through Hybridization with Mesoporous Silica
Abstract
:1. Introduction
2. Results and Discussion
2.1. Powder X-ray Diffraction (PXRD) Patterns
2.2. Nitrogen Adsorption–Desorption
2.3. SEM and TEM Images
2.4. FT-IR Spectroscopy
2.5. Thermogravimetric Analysis
2.6. Adsorption and Separation Performance
3. Materials and Methods
3.1. Materials
3.2. Synthesis of SBA-15
3.3. Synthesis of UiO-66-Br2
3.4. Synthesis of UiO-66-Br2/SBA-15
3.5. Characterization
3.6. Adsorption Performance
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Samples | BET Surface Area (m2/g) | Total Pore Volume (cm3/g) | Micropore Volume (cm3/g) |
---|---|---|---|
UiO-66-Br2 | 515.9 | 0.28 | 0.21 |
U6B2S1 | 626.2 | 0.29 | 0.23 |
U6B2S3 | 610.2 | 0.31 | 0.24 |
U6B2S5 | 607.2 | 0.32 | 0.26 |
U6B2S7 | 521.7 | 0.34 | 0.16 |
SBA-15 | 550.2 | 0.77 | - |
CH4 Adsorption | N2 Adsorption | Sample | CH4 Adsorption | N2 Adsorption | |||||
---|---|---|---|---|---|---|---|---|---|
P/P0 | VCH4 (cm3/g) | P/P0 | VN2 (cm3/g) | P/P0 | VCH4 (cm3/g) | P/P0 | VN2 (cm3/g) | ||
UiO-66-Br2 | 0.10 | 1.09 | 0.12 | 0.27 | U6B2S5 | 0.09 | 1.65 | 0.12 | 0.40 |
0.19 | 1.93 | 0.20 | 0.45 | 0.19 | 3.12 | 0.20 | 0.66 | ||
0.30 | 2.85 | 0.30 | 0.66 | 0.29 | 4.59 | 0.30 | 0.99 | ||
0.40 | 3.66 | 0.40 | 0.88 | 0.40 | 6.03 | 0.39 | 1.31 | ||
0.50 | 4.41 | 0.50 | 1.09 | 0.50 | 7.12 | 0.49 | 1.62 | ||
0.60 | 5.09 | 0.60 | 1.31 | 0.60 | 8.23 | 0.59 | 1.93 | ||
0.70 | 5.76 | 0.70 | 1.51 | 0.69 | 9.13 | 0.69 | 2.25 | ||
0.80 | 6.36 | 0.80 | 1.72 | 0.82 | 10.35 | 0.81 | 2.60 | ||
0.90 | 6.94 | 0.90 | 1.93 | 0.90 | 11.05 | 0.90 | 2.86 | ||
1.00 | 7.53 | 1.02 | 2.18 | 1.01 | 11.97 | 1.01 | 3.22 | ||
U6B2S1 | 0.10 | 1.75 | 0.12 | 0.40 | U6B2S7 | 0.09 | 1.35 | 0.13 | 0.37 |
0.18 | 3.08 | 0.20 | 0.67 | 0.19 | 2.59 | 0.20 | 0.59 | ||
0.30 | 4.74 | 0.29 | 1.00 | 0.31 | 4.02 | 0.29 | 0.83 | ||
0.40 | 5.93 | 0.40 | 1.34 | 0.40 | 4.99 | 0.40 | 1.14 | ||
0.50 | 7.17 | 0.50 | 1.67 | 0.50 | 5.91 | 0.49 | 1.39 | ||
0.59 | 8.14 | 0.60 | 1.99 | 0.59 | 6.80 | 0.59 | 1.65 | ||
0.71 | 9.31 | 0.70 | 2.30 | 0.70 | 7.69 | 0.69 | 1.92 | ||
0.80 | 10.16 | 0.80 | 2.60 | 0.80 | 8.49 | 0.79 | 2.18 | ||
0.90 | 11.13 | 0.90 | 2.91 | 0.90 | 9.21 | 0.89 | 2.44 | ||
1.00 | 12.01 | 1.02 | 3.28 | 1.01 | 10.01 | 1.01 | 2.73 | ||
U6B2S3 | 0.09 | 1.54 | 0.10 | 0.35 | SBA-15 | 0.12 | 0.21 | 0.12 | 0.09 |
0.19 | 2.99 | 0.19 | 0.65 | 0.20 | 0.33 | 0.20 | 0.15 | ||
0.29 | 4.48 | 0.29 | 0.98 | 0.30 | 0.49 | 0.29 | 0.23 | ||
0.42 | 5.98 | 0.39 | 1.29 | 0.39 | 0.65 | 0.39 | 0.31 | ||
0.50 | 6.92 | 0.49 | 1.61 | 0.50 | 0.83 | 0.49 | 0.39 | ||
0.60 | 7.99 | 0.60 | 1.94 | 0.60 | 0.99 | 0.59 | 0.47 | ||
0.70 | 8.96 | 0.70 | 2.24 | 0.70 | 1.15 | 0.69 | 0.56 | ||
0.80 | 9.88 | 0.80 | 2.54 | 0.80 | 1.31 | 0.79 | 0.64 | ||
0.90 | 10.72 | 0.90 | 2.83 | 0.90 | 1.49 | 0.89 | 0.73 | ||
1.01 | 11.64 | 1.02 | 3.20 | 1.00 | 1.66 | 1.01 | 0.84 |
Sample | Adsorption Equilibrium Amount (cm3/g) | |||
---|---|---|---|---|
Adsorption Pressure of 1.0 bar | Desorption Pressure of 0.1 bar | |||
VCH4 (cm3/g) | VN2 (cm3/g) | VCH4 (cm3/g) | VN2 (cm3/g) | |
UiO-66-Br2 | 7.53 | 2.18 | 1.33 | 0.30 |
U6B2S1 | 12.01 | 3.28 | 2.14 | 0.44 |
U6B2S3 | 11.64 | 3.20 | 1.71 | 0.39 |
U6B2S5 | 11.97 | 3.22 | 1.53 | 0.39 |
U6B2S7 | 10.01 | 2.73 | 1.46 | 0.34 |
SBA-15 | 1.66 | 0.84 | 0.25 | 0.14 |
Sample | Parameters Related to the Adsorption Selectivity | |||
---|---|---|---|---|
αCH4/N2 | WCH4/N2 | SCH4/N2 | Reference | |
SBA-15 | 2.13 | 2.02 | 4.30 | this work |
UiO-66-Br2 | 4.84 | 3.31 | 16.02 | this work |
U6B2S1 | 5.30 | 3.46 | 18.34 | this work |
U6B2S3 | 5.24 | 3.54 | 18.55 | this work |
U6B2S5 | 5.45 | 3.68 | 20.06 | this work |
U6B2S7 | 5.27 | 3.58 | 18.86 | this work |
5A Zeolite | 0.94 | - | 0.81 | [49] |
MOF-5 | 1.13 | 0.67 | [49] | |
MOF-177 | 4.00 | 8.45 | [49] | |
MOF-1/SBA-15 | 2.17 | 2.19 | 4.75 | [50] |
MOF-2/SBA-15 | 3.44 | 3.24 | 11.1 | [50] |
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Wang, H.; Zong, Z.; Zhou, Y.; Yin, C.; Lei, Y.; Wang, R.; Deng, Y.; Wu, T. Enhanced CH4/N2 Separation Efficiency of UiO-66-Br2 through Hybridization with Mesoporous Silica. Molecules 2024, 29, 2750. https://doi.org/10.3390/molecules29122750
Wang H, Zong Z, Zhou Y, Yin C, Lei Y, Wang R, Deng Y, Wu T. Enhanced CH4/N2 Separation Efficiency of UiO-66-Br2 through Hybridization with Mesoporous Silica. Molecules. 2024; 29(12):2750. https://doi.org/10.3390/molecules29122750
Chicago/Turabian StyleWang, Hu, Ziao Zong, Yadong Zhou, Chaochuang Yin, Yizhu Lei, Renshu Wang, Yuheng Deng, and Tingting Wu. 2024. "Enhanced CH4/N2 Separation Efficiency of UiO-66-Br2 through Hybridization with Mesoporous Silica" Molecules 29, no. 12: 2750. https://doi.org/10.3390/molecules29122750