Separation dynamics of hydrogen isotope gas in mesoporous and microporous adsorbent beds at 77 K: SBA-15 and zeolites 5A, Y, 10X

The separation of a hydrogen isotope mixture on porous materials was studied using equilibrium and breakthrough experiments. The adsorption equilibria of H2 and D2 on SBA-15 with mesopores and molecular sieves 5A, Y, and 10X with micropores were measured at 77 K using the volumetric method. The brea...

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Veröffentlicht in:International journal of hydrogen energy 2014-03, Vol.39 (9), p.4437-4446
Hauptverfasser: Chu, Xiao-Zhong, Cheng, Zhi-Peng, Xiang, Xin-Xin, Xu, Ji-Ming, Zhao, Yi-Jiang, Zhang, Wei-Guang, Lv, Jin-Shun, Zhou, Ya-Ping, Zhou, Li, Moon, Dong-Kyu, Lee, Chang-Ha
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Sprache:eng
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Zusammenfassung:The separation of a hydrogen isotope mixture on porous materials was studied using equilibrium and breakthrough experiments. The adsorption equilibria of H2 and D2 on SBA-15 with mesopores and molecular sieves 5A, Y, and 10X with micropores were measured at 77 K using the volumetric method. The breakthrough experiments of a H2 and D2 mixture in each adsorbent bed were carried out at various conditions of flow rate and pressure. The equilibrium ratio of D2 to H2 on mesoporous molecular sieves was larger than the ratio on microporous molecular sieves (SBA-15 > 10X > Y > 5A), but the difference among the adsorbents decreased with increases in pressure. On the other hand, the order of breakthrough separation factor showed the opposite result (SBA-15 
ISSN:0360-3199
1879-3487
DOI:10.1016/j.ijhydene.2014.01.031