Regeneration Mechanism of Sulfur Absorption Via Samarium-doped Cerium Adsorbents in the Gas Atmosphere of O2/N2
Abstract
:1. Introduction
2. Experimental
2.1. Preparation of the Sorbents
2.2. Preparation of the Ce-O-S Powder and Corresponding Regenerated Powders
2.3. Desulfurization and Regeneration Assessments
2.4. Sulfur Collection Test
2.5. Characterizations
3. Results and Discussion
3.1. Performance of the Sorbents
3.2. Regeneration Mechanism of the SDC Sorbent
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Conflicts of Interest
References
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Samples | S (m2 g−1) | D (nm) | V (cm3 g−1) | P (nm) |
---|---|---|---|---|
CeO2 | 64 | 9.1 | 0.117 | 9.86 |
SDC | 271 | 5.2 | 0.362 | 5.46 |
SDC a (cycle 1) | 269 | 5.7 | 0.347 | 6.53 |
SDC a (cycle 2) | 260 | 6.6 | 0.339 | 6.91 |
SDC a (cycle 3) | 256 | 7.2 | 0.341 | 7.45 |
SDC a (cycle 4) | 249 | 7.5 | 0.325 | 7.58 |
SDC a (cycle 5) | 251 | 8.0 | 0.317 | 8.16 |
SDC a (cycle 6) | 245 | 8.2 | 0.311 | 8.24 |
Samples | O 1s | S 2p | ||
---|---|---|---|---|
OL Position (eV) | OA Position (eV) | OL/(OL + OA) % | S-species Mass % | |
fresh CeO2 | 529.1 | 531.1 | 91.5 | - |
Ce-O-S powder | 528.9 | 531.0 | 4.7 | 13.8 |
Re1 powder | 529.0 | 531.1 | 75.9 | 1.7 |
Ce-O-S Powder (mg) | NaOH Dosage 0.05 mol/L (mL) | Actual Yield (AY) of Acid (mol) | Theoretical Yield (TY) of Acid (mol) | AY/TY (%) |
---|---|---|---|---|
250 | 28.3 | 0.71 × 10−3 | 0.87 × 10−3 | 81.6 |
500 | 55.6 | 1.39 × 10−3 | 1.73 × 10−3 | 80.1 |
1000 | 106.4 | 2.66 × 10−3 | 3.47 × 10−3 | 76.7 |
1500 | 155.2 | 3.88 × 10−3 | 5.20 × 10−3 | 74.6 |
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Hu, X.; Dong, J. Regeneration Mechanism of Sulfur Absorption Via Samarium-doped Cerium Adsorbents in the Gas Atmosphere of O2/N2. Materials 2020, 13, 1225. https://doi.org/10.3390/ma13051225
Hu X, Dong J. Regeneration Mechanism of Sulfur Absorption Via Samarium-doped Cerium Adsorbents in the Gas Atmosphere of O2/N2. Materials. 2020; 13(5):1225. https://doi.org/10.3390/ma13051225
Chicago/Turabian StyleHu, Xuechao, and Junhui Dong. 2020. "Regeneration Mechanism of Sulfur Absorption Via Samarium-doped Cerium Adsorbents in the Gas Atmosphere of O2/N2" Materials 13, no. 5: 1225. https://doi.org/10.3390/ma13051225