Question

Why we add ethanol in Nickel Chloride complex Preparation?​

Answer 1

Explanation:

2.1 Catalyst preparation

Degazed water was used as a solvent to prevent further oxidation by oxygen. First, nickel chloride hexahydrate precursor (Fluka, 98%), a surfactant, hexadecylammonium bromide (Sigma, 98%) and the selected reducer (either sodium borohydride NaBH4 (Aldrich, 98%) or aqueous hydrazine 65% (Sigma-Aldrich, 98%)) were introduced in the reaction flask. The solution was then mechanically stirred during 1h at 30 °C with NaBH4 (synthesis 1) or 3h at 70 °C with N2H4 (synthesis 2) and afterward alumina support (δ-Al2O3 support (specific area 130 m2/g, porous volume: 1.04 cm3/g), previously crushed and sieved in the 63–100 mm range), was added. After three additional hours of stirring, suspensions were cooled down at room temperature and filtered. Catalysts were then dried at 30 °C. The two catalysts prepared are designated as Ni-NaBH4 for synthesis 1 and Ni-N2H4 for synthesis 2.

Answer 2

Answer:

Degazed water was used as a solvent to prevent further oxidation by oxygen. First, nickel chloride hexahydrate precursor (Fluka, 98%), a surfactant, hexadecylammonium bromide (Sigma, 98%) and the selected reducer (either sodium borohydride NaBH4 (Aldrich, 98%) or aqueous hydrazine 65% (Sigma-Aldrich, 98%)) were introduced in the reaction flask. The solution was then mechanically stirred during 1h at 30 °C with NaBH4 (synthesis 1) or 3h at 70 °C with N2H4 (synthesis 2) and afterward alumina support (δ-Al2O3 support (specific area 130 m2/g, porous volume: 1.04 cm3/g), previously crushed and sieved in the 63–100 mm range), was added. After three additional hours of stirring, suspensions were cooled down at room temperature and filtered. Catalysts were then dried at 30 °C. The two catalysts prepared are designated as Ni-NaBH4 for synthesis 1 and Ni-N2H4 for synthesis 2.