Nickel Catalysts (Heterogeneous)

[7440-02-0] Ni (MW 58.71) InChI = 1S/Ni InChIKey = PXHVJJICTQNCMI-UHFFFAOYSA-N (hydrogenolyses and hydrogenations1) Physical Data: mp 1453 °C; bp 2730 °C; d 8.908 g cm−3. Form Supplied in: powder, rod, wire, foil, or pellet; activated nickel is not commercially available and must be prepared prior to use. 75% nickel on graphite is available. Preparative Methods: activated nickel is prepared mainly by reduction of nickel dichloride with lithium and a catalytic amount of an arene (naphthalene or 4,4′-di-tert-butylbiphenyl) in tetrahydrofuran. Nickel on alumina can be prepared from Ni(NO3)2·6H2O slurried with Alumina and then dried at 120 °C; The catalyst is activated before use by heating at 400 °C for 30 min.2 Handling, Storage, and Precautions: nickel is stable to air, yet care should be taken to avoid moisture when using finely divided nickel catalysts. Nickel is a possible carcinogen. Use in a fume hood.