Hydrogen production properties of magnesium and magnesium-based materials at low temperatures in reaction with aqueous solutions

Effect of ball milling in presence of additives (Graphite, AlCl3, MgCl2 and NaCl) on the hydrolysis performances of Mg17Al12

“…[37], and enhance the pitting corrosion by the localized enrichment in chlorides [18]. Additionally, AlCl3 is a strong water-absorbing agent and almost completely undergoes hydrolysis in water to generate chloride acid, which favor the dissolution of the formed Mg(OH)2 [26,39]. Indeed, the pH of the solution increases in the first 5 min of the hydrolysis reaction and reaches a value of 10 indicating the rapid formation of Mg(OH)2.…”

Nanostructured Mg for hydrogen production by hydrolysis obtained by MgH2 milling and dehydriding

“…The utilization of salt solutions, in particular chlorides solutions, has beneficial effects caused by Clanions that strongly induce pitting corrosion [3,10,11]. A vast majority of papers reporting hydrogen production by hydrolysis use these solutions in the experiments [8,9,[12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27] or hydrolyze a mixture of Mg or MgH2 with a chloride salt prepared by mechanical milling [28][29][30][31]. Among the different chloride solutions those with Mg 2+ and those with acidic cations like Zr 4+ , Fe 3+ and Ti 3+ stand out for being more active [3,31].…”

Catalytic effect of EG and MoS 2 on hydrolysis hydrogen generation behavior of high‐energy ball‐milled Mg‐10wt.%Ni alloys in NaCl solution—A powerful strategy for superior hydrogen generation performance

“…4,32,52,53 It is worth noting that the addition of acids, chloride salts, or tap water are not reasonable strategies to ameliorate Mg alloys' hydrolysis H 2 generation behavior because of the environmental pollution, equipment corrosion, and costs rising. 55,56 The slight addition of reasonable alloying elements can improve the microstructure, phase composition, and the electrochemical activity, significantly improving the hydrogen production behavior of the Mg-based alloy. 55,56 The slight addition of reasonable alloying elements can improve the microstructure, phase composition, and the electrochemical activity, significantly improving the hydrogen production behavior of the Mg-based alloy.…”

“…32,52,54 In comparison, microalloying and high energy ball milling (HEBM) are reasonable for improving the hydrolysis kinetics and yield Mg-based alloys. 55,56 The slight addition of reasonable alloying elements can improve the microstructure, phase composition, and the electrochemical activity, significantly improving the hydrogen production behavior of the Mg-based alloy. 57,58 However, the small specific surface areas of bulk Mgbased alloys prevent the achievement of rapid kinetics and high generation yields.…”