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Aluminium carbide is prepared by direct reaction of aluminium and carbon in an electric arc furnace. [3] 4 Al + 3 C → Al 4 C 3. An alternative reaction begins with alumina, but it is less favorable because of generation of carbon monoxide. 2 Al 2 O 3 + 9 C → Al 4 C 3 + 6 CO. Silicon carbide also reacts with aluminium to yield Al 4 C 3.
The reaction produces linear primary alcohols with an even numbered carbon chain. The process uses an aluminum compound to oligomerize ethylene and allow the resulting alkyl group to be oxygenated. The usually targeted products are fatty alcohols, which are otherwise derived from natural fats and oils.
Three examples are aluminium carbide Al 4 C 3, magnesium carbide Mg 2 C [9] and beryllium carbide Be 2 C. Transition metal carbides are not saline: their reaction with water is very slow and is usually neglected.
In aluminium alloys containing magnesium, magnesium oxides (MgO), cuboids (MgAl 2 O 4-cuboid) and metallurgical spinel (MgAl 2 O 4-spinel) can form. They result from the reaction between magnesium and oxygen in the melt. More of them will form with time and temperature. Spinel can be highly detrimental because of its big size and high hardness.
The aluminium based Meerwein–Ponndorf–Verley reduction can be performed on prochiral ketones leading to chiral alcohols. The three main ways to achieve the asymmetric reduction is by use of a chiral alcohol hydride source, use of an intramolecular MPV reduction, or use of a chiral ligand on the aluminium alkoxide.
Chemical reaction Conversion (chemistry) ... Isopropyl alcohol; 1-Propanol; Fatty alcohol. Cetyl alcohol; ... Aluminium carbide; Calcium carbide; Cyanide salts
Industrially, simple aluminium alkyls of the type Al 2 R 6 (R = Me, Et) are prepared in a two-step process beginning with the alkylation of aluminium powder: 2 Al + 3 CH 3 CH 2 Cl → (CH 3 CH 2) 3 Al 2 Cl 3. The reaction resembles the synthesis Grignard reagents. The product, (CH 3 CH 2) 3 Al 2 Cl 3, is called ethylaluminium sesquichloride ...
The reaction proceeds through generation of an acylium center. The reaction is completed by deprotonation of the arenium ion by AlCl 4 −, regenerating the AlCl 3 catalyst. However, in contrast to the truly catalytic alkylation reaction, the formed ketone is a moderate Lewis base, which forms a complex with the strong Lewis acid aluminum ...