(NH4)2Mg(H2P2O7)2•2H2O was successfully prepared using a wet method from stoichiometric mixtures of NH4Cl (Aldrich, ≥99%), Mg(NO3)2.6H2O (Aldrich, ≥99.99%), K4P2O7 (Aldrich, 99.99%) and HCl. First K4P2O7 was dissolved in 40 ml of water to form a clear solution then HCl was added (Solution A). The NH4Cl, and Mg(NO3)2.6H2O were dissolved together in 40 ml of H2O (Solution B). The solution (B) was then added dropwise to the solution (A) under continuous stirring. Afterwards it was left at room temperature, and crystals appeared within 3 days.
Mg no3 2.6h2o
Manufactured by Merck Group
Mg(NO3)2.6H2O is a chemical compound that is commonly used in laboratory settings. It is a crystalline solid that consists of magnesium, nitrate, and water molecules. This compound is typically used as a reagent or a source of magnesium ions in various chemical reactions and analyses.
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3 protocols using mg no3 2.6h2o
1
Synthesis of Ammonium Magnesium Pyrophosphate
2
Synthesis and Characterization of Metal Nitrate Hydrates
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All reagents (analytical grade) were purchased from Sigma–Aldrich: Mg(NO3)2·6H2O, Cu(NO3)2·3H2O, Al(NO3)3·9H2O, H2PtCI6·6H2O, urea, glycerol, 1,2-propanediol, 1,3-propanediol, ethylene glycol, methanol, ethanol, n-propanol, n-butanol, acetol. Deionized water was used in all experimental processes.
3
Synthesis of Ni, ReNi, and RuNi Catalysts
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Support modification was prepared by wet impregnation of a commercial high-purity γ-alumina (Sasol) by an ethanolic solution of Mg(NO3)2•6H2O (Aldrich) in order to obtain 10% wt of MgO. The full procedure is described elsewhere (Álvarez M et al., 2015 (link)). Active phase incorporation was achieved by wet impregnation of the metal precursors: Ni(NO3)2.6H2O (Panreac), Ru(NO) (NO3)3 (Johnson Matthey), and NH4ReO4 (Aldrich).
Monometallic Ni catalysts (Ni sample) were prepared by adding an ethanolic solution of Ni(NO3)2.6H2O to the modified support in order to achieve a load of 15% wt. Catalyst is then dried and calcined at 500°C for 3 h.
For the bimetallic ReNi and RuNi catalyst (2RuNi, 0.5RuNi, 2ReNi, and 0.5ReNi), a mixed solution of dissolved Ni(NO3)2.6H2O+ NH4ReO4 or Ni(NO3)2.6H2O+ Ru(NO) (NO3)3 was added to the modified support in order to achieve Ni loadings of 15% wt and Re or Ru load of 2.0 and/or 0.50% wt. After impregnation, all catalysts were dried at 120°C overnight and then calcined in air at 500°C for 5 h.
Monometallic Ni catalysts (Ni sample) were prepared by adding an ethanolic solution of Ni(NO3)2.6H2O to the modified support in order to achieve a load of 15% wt. Catalyst is then dried and calcined at 500°C for 3 h.
For the bimetallic ReNi and RuNi catalyst (2RuNi, 0.5RuNi, 2ReNi, and 0.5ReNi), a mixed solution of dissolved Ni(NO3)2.6H2O+ NH4ReO4 or Ni(NO3)2.6H2O+ Ru(NO) (NO3)3 was added to the modified support in order to achieve Ni loadings of 15% wt and Re or Ru load of 2.0 and/or 0.50% wt. After impregnation, all catalysts were dried at 120°C overnight and then calcined in air at 500°C for 5 h.
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