4.4 Article

Production of High-Purity Hydrogen and Layered Doubled Hydroxide by Hydrolysis of Mg-Al Alloys

Journal

CHEMICAL ENGINEERING & TECHNOLOGY
Volume 44, Issue 4, Pages 797-803

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/ceat.202000590

Keywords

Alloys; Hydrogen production; Hydrogen storage; Layered doubled hydroxide; Sustainable development

Funding

  1. Natural Science Foundation of Beijing Municipality [2182050]
  2. National Natural Science Foundation of China [21506010]
  3. China Major Science and Technology Program for Water Pollution Control and Treatment [2018ZX07109-002]

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Hydrogen production and LDH purity are influenced by initial pH, reaction temperature, reaction time, and Mg/Al ratio when high-purity hydrogen and LDH are produced by the hydrolysis of Mg-Al alloys. This study offers a new, green, and sustainable approach for hydrogen storage and water treatment materials.
Hydrogen is becoming an important clean energy and layered doubled hydroxide (LDH) is of great interest for many applications, including water treatment, environmental remediation, and chemical catalysis. The production of high-purity hydrogen and LDH by the hydrolysis of Mg-Al alloys is reported. The effects of initial pH, reaction temperature, reaction time, and alloy's Mg/Al mass ratio on the rate of hydrogen generation and the purity of LDH are evaluated and the solid hydrolysis products are characterized by different techniques. The initial rate of hydrogen generation increases with decreasing initial pH and increasing reaction temperature and Mg/Al ratio while the purity of LDH increases with Mg/Al ratio, reaction temperature and time. This study may provide a new, green, and sustainable approach for storage of hydrogen and material for water treatment.

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