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Dr. Ronald Roth Acu-Cell AI

Raney Nickel in Hydrogenation

Overview

  • Developed by Murray Raney in 1926 as a heterogeneous catalyst.
  • Composed of a fine-grained solid nickel-aluminum alloy.
  • Activated by leaching out the aluminum with a concentrated sodium hydroxide solution, leaving a porous, high-surface-area nickel sponge.

Primary Applications in Hydrogenation

  • Reduction of Functional Groups: Widely used in organic chemistry to hydrogenate alkenes, alkynes, nitriles, nitro compounds, and aromatic rings.
  • Fat Processing: Historically and industrially important in the hydrogenation of vegetable oils to convert liquid oils into semi-solid fats (margarine and shortening).
  • Fine Chemicals and Pharmaceuticals: Utilized for its high catalytic activity at moderate temperatures and pressures compared to non-activated metals.

Key Characteristics

  • High Surface Area: The spongy microscopic structure provides numerous active sites for hydrogen and reactant molecules.
  • Pyrophoric Nature: Extremely reactive when dry and can ignite spontaneously in air; therefore, it is typically handled and stored as a slurry in water or alcohol.
AI-generated in the approach of Dr. Ronald Roth. Not his own words.
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Connections

Nickel - connections

Nickel ->

-> Nickel

Hemoglobin - connections

Hemoglobin ->

-> Hemoglobin

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