Aluminum cobalt

Two blue pigments can be prepared in transparent form cyanide iron blue and cobalt aluminum blue. These pigments are used in achieving a blue shade of the metal effect pigments in metallic paints. Transparent cyanide iron blue is prepared by a precipitation reaction similar to the one used for the preparation of the opaque pigment, but considerably lower concentrations of solutions are used. It is produced by Degussa (Germany), Manox (U.K), and Dainichiseika (Japan). 

Transparent cobalt aluminum blue is prepared by the precipitation of diluted solutions of cobalt and aluminum with alkaHes. The formed precipitate of hydroxides is washed, filtered off, dried, and calcined at about 1000°C. 

A critical issue is the stabiUty of the hydride electrode in the cell environment. A number of hydride formulations have been developed. Table 5 shows hydride materials that are now the focus of attention. Most of these are Misch metal hydrides containing additions of cobalt, aluminum, or manganese. The hydrides are prepared by making melts of the formulations and then grinding to fine powers. The electrodes are prepared by pasting and or pressing the powders into metal screens or felt. The additives are reported to retard the formation of passive oxide films on the hydrides. 

Pigment Blue 36 chromium —cobalt—aluminum oxide [68187-11-1] 11M2)... 

The [Co(en)3]3+ ion has been shown to be a useful template for the synthesis of unusual cobalt, aluminum, gallium, and magnesium phosphates exhibiting framework,632-637 layered638-641 and chain642 structures, as well as for the hydrothermal synthesis of novel zeolites643,644 and other framework structures such as molybdenum phosphates.645... 

Cobalt aluminum blue, transparent, 19 412 CobaltCII) aminobenzoate, uses, 7 239t CobaltCII) ammonium sulfate, uses, 7 239t CobaltCII) arsenate, uses, 7 241t Cobalt-base corrosion-resistant alloys,... 

Thompson, H. A., Parks, G. A. and Brown, G. E. (1999). Ambient-temperature synthesis, evolution, and characterization of cobalt-aluminum hydrotalcite-like solids. Clays Clay Miner. 47, 425. 

Cobalt aluminum blue Pigment blue 28 C0AIO4... 

Raney cobalt, which is prepared from a commercially available cobalt aluminum alloy in the same way as is Raney nickel, has been shown to have catalytic activity but it is generally less active than Raney nickel and more sensitive to variations in the reaction procedure and catalyst aging than the nickel catalyst. 

Raney cobalt catalyst. The catalyst is prepared by the action of sodium hydroxide on a 40 60 cobalt-aluminum alloy available from Raney Catalyst Co. The procedure is that used by Billica and Adkins for the preparation of W-7 Raney nickel. 

MitcheU JA, Pitner WR, Hussey CL (1996) Electrodeposition of cobalt and cobalt-aluminum alloys from a room temperature chloroaluminate molten salt. J Electrochem Soc 143 3448-3451... 

Catalytic hydrogenation with cobalt/aluminum catalyst gave polyethylene copolymers (from the hydrogenation of butadiene copolymers) or ethylene/propylene copolymers (from isoprene copolymers) containing 2,6-ditertiarybutyl-il--vinylphenol or 2,6-ditertiarybutyl-4-iso-propenylphenol in the polymer. These polymers have been used as polymeric antioxidants and axe effective in retarding autooxidation of polyolefins ( 0). 

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