Raney Nickel Catalyst (Active)

CAS No. 12635-27-7

Raney Nickel is a versatile Hydrogenation Catalyst and is used in Hydrogenation of a large number of functional groups notable among them being Carbon-Carbon double bond, Carbonyl (aldehydic and ketonic), Nitro, Azide, Nitrile, Oxime groups. It is also used in Hydrogenolysis (viz dehalogenation, debenzylation) and Desulfurisation reactions.

Raney Nickel can also be used in hydrogenation reactions involving very high pressure and temperature. Due to its ability to hydrogenate virtually any type of functional group Raney Nickel is likely to hydrogenate most of the functional groups present on the molecule (of course to varying degrees) capable of getting hydrogenated. Raney Nickel is therefore termed as a non-specific catalyst.

Raney Nickel is highly pyrophoric when dry i.e. catches fire when allowed to dry in atmosphere and is therefore always kept submerged under water or a suitable solvent such as Ethanol, Cyclohexane, Dioxane etc. Even though Raney Nickel Catalyst (Active) is always kept submerged under water or a suitable solvent and supplied in that manner, the commercial transactions are done on dry weight basis.

Notable applications are in the manufacture of Sorbitol, rubber additives, dyes & drugs intermediates, pesticide intermediates, Caprolactum, etc,. Raney Nickel Catalyst can be used in batch as well as in continuous hydrogenation process.

Unlike most other Hydrogenation catalysts, it is not instantly poisoned by sulfur radicals if present in the reactants. However, finely divided Nickel particles due to strong affinity for sulfur instantly react with sulfur present in any form in the molecule of the reactant. Due to its this special property Raney Nickel is frequently used for desulfurisation reactions.

Raney Nickel can also be used for dehydrogenation reactions.

Certificate of Analysis (COA) is made available to all the customers irrespective of quantum of supply. Material safety information, technical specification and test methods however are supplied against specific request.

Limitations

Limitation of Raney Nickel is that it cannot be used in acidic reaction conditions especially pH below 5.5 because at that pH fine Nickel particles will start dissolving in the reactant/solvent, leading to rapid decline in activity.

Grades of Raney Nickel Catalyst (Active)

At Vineeth Chemicals, based on our customers need, in general, we make different grades mentioned in the table below.

Grades	Applications
RNP	Reduction of Cyano group to Amine Olefinic Bond Reduction Nitro to Amine Reduction Reduction of dinitro derivatives of naphthalene compound to corresponding amine. De-hydrogenation of Menthadienes. Reduction of Oxime to Amine Reduction of Carbonyl to Alcohol O-Debenzylation
RNP-A	Reduction of Nitro group to Amine Reduction of Alkene to Alkane Used for Venlafaxine Hydrochloride Hydrogenation of a double bond conjugate to the ring (reduces only c=c bond)
RNP-F	Reduction of Nitrile group to Primary Amine Aliphatic Nitro & Double Bond reduction Reduction of Oxy Carbazole Hydrogenation of Furan derivative to Tetra-hydro Furan derivative Phenol to Cyclohexanol Benzaldehyde to Benzyl Alcohol Benzyl Alcohol to Cyclohexyl Methanol Nitrophenol to Aminophenol Aminophenol to HydroxyCyclohexylAmine O-Debenzylation, N- Debenzylation
RNK	Dehydrogenation of aromatics, Can withstand higher temperature for a longer period.
RNK-F	Dehydrogenation of cyclohexane derivative to produce benzene derivative. Hydrogenation of Dextrose to Sorbitol Reduction of Nitriles to Amines with higher recycles Ammonolysis of alcohol (1,6 Hexanediol to hexamethylenediamine)
RNO-WOC	Used during conversion of Nitrile to Aldehyde
RNP-WOC	Hydrogenation of Nitro group to Amine Reductive Amination of Aldehyde and Ketones to Primary Amine
RNP-D	Desulphurization

Note: The applications are not exclusive for a particular grade. These are preferred applications.

Besides, the company has the capability of making Raney Nickel as per customer’s specification such as very low activity, less pyrophoric, neutral pH, low slurry density, high slurry density, special for Carbazole, special for de-sulfurization, Molybdenum or Chromium promoted catalyst. Our catalysts are easy to filter and are guarded against small amounts of oxidants.

Shelf Life

Packing

Reactivation of Spent Raney Nickel Catalyst

Recommended Application :

A versatile Hydrogenation Catalyst that can carry out almost all types of hydrogenation reactions and can also be used for dehydrogenation and desulphurisation.

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Raney Nickel Catalyst (Active)