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- W3198384435 abstract "Reactions between Mg and H2O could provide on-demand, high-purity hydrogen gas; however, the reaction rate is slow at ambient temperature. In this work, the hydrogen evolution of Mg in Mg(Ac)2,Zn(Ac)2, Co(Ac)2, and Ni(Ac)2 solution is examined. The formed Mg(OH)2 precipitate pushes the chemical equation forward and induces a continuous reaction between Mg and water in Mg(Ac)2. Approximately ~952 mL g−1 hydrogen is obtained. Metallic Zn is detected in the whole process and almost no Zn(OH)2 is detected in Zn(Ac)2. Both Mg(OH)2 and Co(OH)2/Ni(OH)2 are detected in Co(Ac)2 and Ni(Ac)2. Meanwhile, the generated magnetic Co and Ni not only compose the micro-galvanic cell with Mg but also catalyze the hydrogen evolution. The detected maximum H2 volume in Co(Ac)2 and Ni(Ac)2 is 847 and 950 mL g−1, respectively. Correspondingly, the reaction rate varies from 54 to 275 mL g−1 min−1 in Co(Ac)2 and 22 to 45 mL g−1 min−1 in Ni(Ac)2, suggesting that the catalytic capability of Co is better than that of Ni. However, the change of Co morphology seriously affects the catalytic capability compared with Ni. In short, the formed precipitate pushes the chemical reaction forward and Co or Ni catalyst accelerates hydrogen evolution." @default.
- W3198384435 created "2021-09-13" @default.
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- W3198384435 date "2021-09-06" @default.
- W3198384435 modified "2023-10-18" @default.
- W3198384435 title "Promoting hydrogen evolution by metal and precipitate for Mg in different acetate solutions" @default.
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- W3198384435 doi "https://doi.org/10.1002/er.7257" @default.
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