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Nickel Formate
Nickel formate is the nickel salt of formic acid with the chemical formula Ni(HCOO)2. Synthesis and structure Nickel formate can be obtained by reacting nickel(II) acetate or nickel(II) hydroxide with formic acid. :Ni(OH)2 + 2HCOOH → Ni(HCOO)2 + 2 H2O Nickel formate can also be synthesized by the reaction of sodium formate with nickel (II) sulphate. Characteristics As a dihydrate, nickel formate is a green, odorless, non-flammable solid that is sparingly soluble in water. The compound has a monoclinic crystal structure. The anhydride forms on careful heating at 130–140 °C. When heated in a vacuum to 300 °C, pure nickel is formed: : Such fine powders are useful as hydrogenation catalysts.Werner Reutemann and Heinz Kieczka "Formic Acid" in ''Ullmann's Encyclopedia of Industrial Chemistry'' 2002, Wiley-VCH, Weinheim. Use Nickel formate is used in the production of nickel and other nickel compounds such as nickel catalysts. References {{reflist Form ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ni2+
Nickel is a chemical element; it has symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel is a hard and ductile transition metal. Pure nickel is chemically reactive, but large pieces are slow to react with air under standard conditions because a passivation layer of nickel oxide forms on the surface that prevents further corrosion. Even so, pure native nickel is found in Earth's crust only in tiny amounts, usually in ultramafic rocks, and in the interiors of larger nickel–iron meteorites that were not exposed to oxygen when outside Earth's atmosphere. Meteoric nickel is found in combination with iron, a reflection of the origin of those elements as major end products of supernova nucleosynthesis. An iron–nickel mixture is thought to compose Earth's outer and inner cores. Use of nickel (as natural meteoric nickel–iron alloy) has been traced as far back as 3500 BCE. Nickel was first isolated and classified as an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
