Nickel-aluminum alloy plasma spraying on wire mesh to fabricate porous-structured Raney nickel wire mesh.

Nickel-aluminum alloy wire mesh is prepared by plasma spraying, resulting in a porous structure. Raney nickel—a fine-grained solid catalyst composed of a nickel-aluminum alloy—is widely used in numerous industrial processes. It was first introduced in 1962 by American engineer Murray Raney[1] as an alternative catalyst for the hydrogenation of vegetable oils in industrial production. Today, Raney nickel serves as a heterogeneous catalyst and is extensively employed in various organic syntheses and hydrogenation reactions. ●The preparation of Raney nickel involves reacting a nickel-aluminum alloy with sodium hydroxide. This process, known as "activation," dissolves most of the aluminum from the alloy, leaving behind a highly porous structure. This porous architecture provides an exceptionally large surface area, thereby endowing the catalyst with high catalytic activity. In a typical Raney nickel catalyst, nickel accounts for approximately 85% by mass; accordingly, for every two nickel atoms, there is one aluminum atom forming part of the catalyst. The aluminum plays a crucial role in maintaining the pore structure and thus contributes positively to the overall performance of the catalyst.

Category:

Plasma spraying equipment

Plasma-Prepared Raney Nickel Wire Mesh

Key words:

丝网

催化剂

raney

一种

铝合金

这种

加氢

制备

原子

结构

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Product Description

Nickel-aluminum alloy plasma spraying on wire mesh to fabricate porous-structured Raney nickel wire mesh.

Raney nickel is a fine-grained solid catalyst composed of a nickel-aluminum alloy, widely used in numerous industrial processes. In 1962, American engineer Murray Raney[1] first developed it as an alternative catalyst for the hydrogenation of vegetable oils in industrial production. Today, Raney nickel is extensively employed as an isomerization catalyst in various organic syntheses and hydrogenation reactions.

● Raney nickel is prepared by reacting a nickel-aluminum alloy with sodium hydroxide. This process, known as “activation,” dissolves most of the aluminum from the alloy. The resulting porous structure has a large surface area, which confers high catalytic activity. In a typical catalyst, nickel accounts for approximately 85% (by mass), meaning that for every two nickel atoms, there is one aluminum atom forming part of the catalyst. The aluminum plays a crucial role in maintaining the pore structure and thus contributes positively to the overall performance of the catalyst.