Phase diagram alkali metal alloys

Phase diagrams of alkali metal alloys. The pattern of the intermetallic reactivity of these metals is shown in Fig. 5.6, where the compound formation capability with the different elements is summarized. 

The Raney metals discussed above are typical examples of production by selective removal. The aluminum of the alloy with the desired catalytically active metal is selectively dissolved by treatment with alkali. Because dissolution is performed at low temperatures, i. e. below ca 100 °C, sintering of the remaining metal particles does not occur. Despite the many papers on Raney nickel [3-12], less has been published on the preparation of other Raney metals. The production of the initial aluminum alloy and the thermal treatment of the alloy has not been extensively investigated. The phase diagram of the nickel-aluminum system is rather complicated. 

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