Synergistic effect of hydrogen generation from sodium borohydride and waste aluminum can
| Autor: | Li-Chun Hsu, 許立群 |
|---|---|
| Rok vydání: | 2017 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 105 This study is about synergistic effect of hydrogen generation from sodium borohydride (NaBH4) in the presence of waste aluminum can, using deionization water as a reactant with acid catalyst. The concentrations of NaBH4, acid catalyst sodium bisulfate (NaHSO4) and solution pH, temperature were found to have great amount influences on the hydrogen generation rate and hydrogen gas volume of hydrolysis of NaBH4 solution. The particle of aluminum size and composition made a difference to synergistic effect and the water vapor within hydrogen also affected the power of the proton exchange membrane fuel cell(PEMFC). The solid byproducts from the wasted NaBH4 solution were characterized by X-ray diffraction(XRD), scanning electron microscope(SEM), energy dispersive X-ray spectrometer(EDX) in a mean time. The results show that the maximum hydrogen volume obtained was 6% wt in the ultrasonic tank at room temperature and NaBH4 hydrolysis cause the solution pH elevated by rising temperature, limited the hydrogen generation capacity, but increased the hydrolysis from aluminum can for a long time. The reaction time decreased while using acid solution and NaHSO4, but limited hydrogen generation from Al can. After dehumidification, the hydrogen had 18% relative humidity in proton exchange membrane fuel cell and the power were less then pure hydrogen source but better then un-dehumidification. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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