Aluminum suboxide

Aluminum suboxide, effect of formation on aluminum yield in Hall process, 2 295... 

At very low Al coverage, the Al KLL Auger peaks display two components at 1392.0 eV and 1384.6 eV kinetic energies assigned respectively to metallic aluminum and interfacial aluminum suboxide. The extent of this Auger chemical shift (7.4 eV, i.e even larger than in pure A( 5.4 eV)) can be due to extra-atomic relaxation effect... 

Al particles of diameter 10-500 pm have temperature of ignition above 1900 C at heating in air or in steam [31]. The beginning of Al particles combustion occurs in vapor phase moreover, the intensity of a luminescence zone appearing around a particle increases slowly. Stationary combustion is characterized by existence of a luminescence zone, which does not modify their sizes almost until the complete burnout of a metal. Aluminum suboxides observed in flames are hollow spheres in condensed combustion products (CCPs), which amount... 

Chemical properties of gallium fall between those of aluminum and indium. It forms mostly the binary and oxo compounds in -i-3 oxidation state. It forms a stable oxide, Ga203 and a relatively volatile suboxide, Ga20. 

Monosubstituted amino)pyridine and carbon suboxide in ether furnished 1-substituted derivatives of pyrido[l,2- ]pyrimidines (63).115 22123 With aluminum chloride as a catalyst, yields were almost quantitative.122... 

The reader should note the similarity between the icosahedral fragment in BioHh and the icosahedron that is present not only in crystalline elemental boron, but also in a number of boron compounds such as boron carbide (which may be represented as B12C3), boron suboxide (B12BO2), and the salt K2B12H12. Moreover, similar icosahedra of aluminum atoms... 

Polymerization of carbon suboxide in heterogeneous systems, i.e. polymer precipitating from the reaction solution, by various initiators was examined qualitatively by Hegar (9). It was found that the best catalysts in cyclohexane solution (at 0°C., then room temperature) were triethylamine and pyridine. Boron trifluoride was somewhat less effective, while sulfuric acid was inefficient and slow. With aluminum chloride the catalyst particles were rapidly coated with polymer, and no significant amount of polymer could be obtained. 

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