Nickel Aluminide (Raney Nickel), NiAl

Product Information

Raney nickel /ˈreɪniː ˈnɪkəl/, also called spongy nickel,[1] is a fine-grained solid composed mostly of nickel derived from a nickel–aluminium alloy. Several grades are known, of which most are gray solids. Some are pyrophoric, but most are used as air-stable slurries. Raney nickel is used as a reagent and as a catalyst in organic chemistry. Macroscopically, Raney nickel is a finely divided, grey powder. Microscopically, each particle of this powder is a three-dimensional mesh, with pores of irregular size and shape, the vast majority of which are created during the leaching process. Raney nickel is notable for being thermally and structurally stable, as well as having a large Brunauer-Emmett-Teller (BET ) surface area. These properties are a direct result of the activation process and contribute to a relatively high catalytic activity. The surface area is typically determined by a BET measurement using a gas that is preferentially adsorbed on metallic surfaces, such as hydrogen. Using this type of measurement, almost all the exposed area in a particle of the catalyst has been shown to have Ni on its surface.Since Ni is the active metal of the catalyst, a large Ni surface area implies a large surface is available for reactions to occur simultaneously, which is reflected in an increased catalyst activity. Commercially available Raney nickel has an average Ni surface area of 100 m2 per gram of catalyst. A high catalytic activity, coupled with the fact that hydrogen is absorbed within the pores of the catalyst during activation, makes Raney nickel a useful catalyst for many hydrogenation reactions. Its structural and thermal stability (i.e., it does not decompose at high temperatures) allows its use under a wide range of reaction conditions. [9][10] Additionally, the solubility of Raney nickel is negligible in most common laboratory solvents, with the exception of mineral acids such as hydrochloric acid, and its relatively high density (about 6.5 g cm⁻³)also facilitates its separation from a liquid phase after a reaction is completed.

CAS:7440-02-0

Synonyms

Raney-nickel, Nickel Aluminum alloy; Aluminium - nickel (1:1); Aluminum nickel alloy; Aluminium-nickel, Aluminum, compd. with nickel (1:1), Aluminum-nickel catalyst, skeletal catalyst, sponge-metal catalyst

Nickel Aluminide Specification

Size：customized

Purity:2N(99%), 3N5(99.95%), 4N(99.99%), 4N5(99.995%),5N(99.999%)，

Per your request or drawing

We can customized as required

Properties（Theoretical）

Applications of Nickel Aluminide

Raney nickel is used in a large number of industrial processes and in organic synthesis because of its stability and high catalytic activity at room temperature

In a commercial application, Raney nickel is used as a catalyst for the hydrogenation of benzene to cyclohexane. Other heterogeneous catalysts, such as those using platinum group elements are used in some cases. Platinum metals tend to be more active, requiring milder temperatures, but they are more expensive than Raney nickel.The cyclohexane thus produced may be used in the synthesis of adipic acid, a raw material used in the industrial production of polyamides such as nylon

• Dextrose to sorbitol;

• Nitro compounds to amines, for example, 2,4-dinitrotoluene to 2,4-toluenediamine;

• Nitriles to amines, for example, stearonitrile to stearylamine and adiponitrile to hexamethylenediamine;

• Olefins to paraffins, for example, sulfolene to sulfolane;

• Acetylenes to paraffins, for example, 1,4-butynediol to 1,4-butanediol.

Packing of Nickel Aluminide

Standard Packing:

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes Special package is available on request.

ATTs’Nickel Aluminide is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition

Chemical Identifiers