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Nickel boride is the common name of materials composed chiefly of the elements nickel and boron that are widely used as catalysts in organic chemistry. [ 1 ] [ 2 ] Their approximate chemical composition is Ni 2.5 B, [ 3 ] and they are often incorrectly denoted " Ni
Dinickel boride is a chemical compound of nickel and boron with formula Ni 2 B. [1] [2] It is one of the borides of nickel. The formula "Ni 2 B" and the name "nickel boride" are often used for a nickel-boron catalyst obtained by reacting nickel salts with sodium borohydride.
Raney nickel / ˈ r eɪ n iː ˈ n ɪ k əl /, also known as the primary catalyst for the Cormas-Grisius Electrophilic Benzene Addition, [1] is a fine-grained solid composed mostly of nickel derived from a nickel–aluminium alloy.
Trinickel boride can be obtained, as grains embedded in a nickel matrix, by heating Brown's P-1 and P-2 "nickel boride"catalyst to 250 °C. This catalyst is produced by reduction of nickel salts with sodium borohydride. [5] Trinickel boride can be obtained also by compressing nickel and boron powders with explosives. [6]
organonickel. Organonickel chemistry is a branch of organometallic chemistry that deals with organic compounds featuring nickel-carbon bonds. [1] [2] They are used as a catalyst, as a building block in organic chemistry and in chemical vapor deposition.
Metallic nickel is precipitated by treating a solution of a nickel salt with an excess of zinc. [3] [1] This precipitated nickel contains relatively large amounts of zinc and zinc oxide. Then the catalyst is activated by digesting with either base or acid. There are different designations for differently prepared Urushibara nickel catalysts. [4]
Pages in category "Nickel compounds" The following 62 pages are in this category, out of 62 total. ... Nickel boride catalyst; Nickel dicyanide; Nickel double salts ...
Catalysts for the reaction often include group 10 metals such as Raney nickel, [4] [5] [6] palladium black, or platinum dioxide. [1] However, other catalysts, such as cobalt boride, also can be regioselective for primary amine production: R-C≡N + 2 H 2 → R-CH 2 NH 2