Search results
Results From The WOW.Com Content Network
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 "Ni2 B" and the name "nickel boride" are often used for a nickel-boron catalyst obtained by reacting nickel salts with sodium borohydride.
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]
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.
Nickel boride is the common name of material composed chiefly of the elements nickel and boron that are widely used as catalysts in organic chemistry. Nickel boride may also refer to: Dinickel boride (Ni 2 B)
Nickel 2.19% Quick Facts Component Number Variable Weighting On an annual basis, weighting restrictions are applied such that no related group of commodities constitutes more than 33% of the index and no single commodity constitutes more than 15% or less than 2% of the index. Between rebalancings, weightings may fluctuate to levels outside ...
President Donald Trump has nominated Pierre M. Gentin, chief legal officer of consulting firm McKinsey & Co, to serve as general counsel at the U.S. Commerce Department, according to U.S. Senate ...
U.S. President Donald Trump said on Monday he wanted Ukraine to supply the country with rare earths in return for financially supporting Kyiv's war effort against Russia. The remark appears to ...