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題名 | Hydrogen Isotope Separation by a Metal Hydride Process=以一金屬氫化物程序行氫同位素分離 |
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作者 | 黃大仁; | 書刊名 | Journal of the Chinese Institute of Chemical Engineers |
卷期 | 15:1 1984.01[民73.01] |
頁次 | 頁41-48 |
分類號 | 460.024 |
關鍵詞 | 分離; 同位素; 行氫; 金屬; 氫化物; 程序; |
語文 | 英文(English) |
英文摘要 | A single column pressure swing adsorption process using metal hydrides was developed for protium-deuterium separation. Pellets composed of 8 percent LaNi□Al□ with balance aluminum as thermal ballast were used. Pressurizationelution experiments and process experiments with cyclic operations were conducted. It was found that lower feed concentration of deuterium, lower pressurization and evacuation pressures, a smaller product cut led to higher product enrichment in deuterium. An optimal pressurization time was necessary to maximize the separation. It was also found that the HD-H₂ separation was much better than the D₂-H₂ separation, almost four-fold for one case. With 1 percent HD-balance H₂ feed, a peak enrichment of 161 percent was achieved. A hydriding effect was shown to exist for hydrogen isotope separation. The equilibrium isotope effect and probably a kinetic isotope effect were shown to affect the separation. |
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