Hydrogenation Catalyst Division

Activated Raney® Nickel Catalyst Division

Activated Raney® Nickel Catalyst and Metal Chemicals

Activated Raney® Nickel Catalyst
Finest Raney® Nickel Catalyst
Raney®/ Sponge Nickel Catalyst (Ready to Use)
Activated Nickel Catalyst
Nickel-Aluminium Alloy Powder (50:50)
Nickel-Aluminium Alloy Powder (30:70)
Zeolite-4A (Detergent Grade)

Type of Catalyst
Test & Specifications	Raika-G ® CT-9092A	Raika-G ® CT-8890M	Raika-G ® CT-8588
Appearance	Fine Grey Black particle	Fine Grey Black particle	Fine Grey Black particle
	in supernatant water	in supernatant water	in supernatant water
Pyrophoric test	Highly pyrophoric when dry	Highly pyrophoric when dry	Highly pyrophoric when dry
Nickel	90-92 %	88-90 %	85-88%
Mol./Cr/Fe/Cu	Nil	1.6-2.0%	Nil
particle size	Above 200 mesh	Above 200 mesh	Above 100 mesh
Bulk Density	1.3-1.8	1.3-1.8	1.3-1.8
Settled Density	0.5 – 0.65	0.5 – 0.66	0.5 – 0.67
Activity (with NB)	55-75ml H2/Min	55-75ml H2/Min	65-110ml H2/Min
pH	9-11.	9-11.	9-11.

Applications/Reactions

Adiponitrile Hydrogenation with Ni Catalysts
Alcohol Dehydrogenation with Ni Catalysts
Desulfurization/Dehydrogenation
Fatty Nitrile Hydrogenation
Hydrogenation of Anilines
Hydrogenation of Aromatics compound
Hydrogenation of CC Double Bonds
Hydrogenation of CC Triple Bonds to CC Double Bonds
Hydrogenation of CC Triple Bonds to CC Single Bonds
Hydrogenation of CN Double Bonds (Imine Hydrogenation)
Hydrogenation of CN Triple Bonds (Nitriles) to Aldehydes
Hydrogenation of CN Triple Bonds to Primary Amines
Hydrogenation of DNT to TDA
Hydrogenation of Esters
Hydrogenation of Ketones and Aldehydes
Hydrogenation of Ketoses and Aldoses
Hydrogenation of Oximes
Hydrogenation of Oxygen Containing Heterocyclic Compounds
Hydrogenation of Phenols
Hydrogenation of Phthalic Anhydride
Hydrogenation of Polyaromatics
Hydrogenation of Triglycerides (Fats)
Reductive Alkylation/Amination of Aldehydes and Ketones
Selective Carbonyl Hydrogenation from Furfural
Sorbitol Production
Sulfolene Hydrogenation

Storage

Activated Raney® Nickel Catalyst/ Raney®/ Sponge Nickel Catalyst/ Activated Nickel Catalyst (ready to Use) & other Metal Hydrogenation Catalyst must be kept with supernatant water in their vented containers until use. In case of loose container ,the supernatant water must be present to complete covering at all times, Avoid direct sun light , warm area. At the storage temperature of 20° -25° C the activated catalysts maintain their activity for 6 months to one year.

Safety and Precautions

Activated Raney® Nickel Catalyst/ Raney®/ Sponge Nickel Catalyst/ Activated Nickel Catalyst (Ready to Use) & other Metal Hydrogenation Catalyst are highly pyrophoric in Dry conditions and ignite itself in air.
Protect Eyes and skin as the supernatant water is caustic (Sodium Hydroxide); In case of contact the effected area should be washed with water and contact the Physician.
Avoid fire/flames, spark sources, and smoking at the time of catalyst handling.

Sampling

There is always particle size segregation of Finest Raney® Nickel Catalyst/ Activated Raney® Nickel Catalyst/ Raney®/ Sponge Nickel Catalyst/ Activated Nickel Catalyst (Ready to Use) settling, hence obtain a representative sample when weighing a small portion of catalyst for test reactions. Also the activity of Catalyst is inversely Proportional to its particle size, so the catalyst container must be stirred before sampling and also sample must be taken from it immediately before the particles start to settle. If the sample is required from drum we recommend the stirring method with the sample being obtained from the middle of the uniform stirred suspension.

Weighing

Finest Raney® Nickel Catalyst/ Activated Raney® Nickel Catalyst/ Raney®/ Sponge Nickel Catalyst/ Activated Nickel Catalyst (Ready to Use) always contains supernatant water due to its pyrophoric nature. The Weighing of this catalyst is calculated on the basis of its dry weight. Weight on dry basis of a container/vessel given pack can be determined as follows :

Take a clean transparent vessel of the size sufficient enough to accommodate entire quantity of the catalyst along with supernatant water.
Transfer the entire quantity of the catalyst slurry along with supernatant water into this vessel . Additional D.M.water can be used for ensuring complete transfer. Put a mark with the help of a marker pen on the exterior or the vessel at the upper level of supernatant water. Now weigh this bucket along with catalyst and water. Let this weight be F.
Empty out the Vessel. Remove the catalyst completely. Fill up the Vessel up to the same mark with D.M.water. Again weigh the bucket. This time the weight is due to vessel and water (without catalyst) only. Let this weight be H.
Weight of given quantity of catalyst on dry basis = 1.22 x [F-H]

Reactor Charging

The Finest Raney® Nickel Catalyst/ Activated Raney® Nickel Catalyst/ Raney®/ Sponge Nickel Catalyst/ Activated Nickel Catalyst (Ready to Use) can be transferred immediately to the reactor from the container it was weighed in. The amount of water in the reaction may be reduced if the catalyst is allowed to settle and the excess water is removed before reactor charging. If necessary, use a wash bottle containing distilled water to rinse out any stuck catalyst particles into the reactor during charging. Avoid catalyst from Air oxidation. In case the reaction is water sensitive, then the water in the catalyst slurry can be displaced with a suitable solvent. First allow the catalyst slurry to settle, remove the excess water (see above), and replace the removed water with the desired solvent.And repeat the same under Stirring the catalyst slurry between the solvent addition step and its decantation also enhances the removal of water. Additional amounts of the desired solvent can be used to wash any stuck catalyst particles into the reactor during charging .

Filteration/Sepration from Reaction Mass

After completion of reaction separate the Finest Raney® Nickel Catalyst/ Activated Raney® Nickel Catalyst/ Raney®/ Sponge Nickel Catalyst/ Activated Nickel Catalyst (Ready to Use)from the reaction solution to purify the product, or recycle the catalyst for additional reactions. There are many commercial methods for catalyst separation. Most of the catalyst particles after the stoppage of agitator, settles at the bottom of the reactor under the influence of gravity. A small fraction constituting less than two / three percent may however remain in suspended form. The products of reaction being in liquid form can be subjected to filtration using nutch filter with filter cloth having pore size of less than 15 microns, A filter paper sheet may also be spread over the filter cloth to assist clear filtration. Use of filter-aid, viz fuller’s earth should be avoided as far as possible, as it eliminates the prospects of recycling as well as reactivation of catalyst

Safety on Spillageor De-activation

Finest Raney® Nickel Catalyst/ Activated Raney® Nickel Catalyst/ Raney®/ Sponge Nickel Catalyst/ Activated Nickel Catalyst (Ready to Use) spills should be immediately flushed from the work area with water into a wastewater collection system.The catalyst may also be removed from the wastewater collection system and deactivated as described below. Spent and old catalyst no longer intended for use should be deactivated by a well-controlled oxidation procedure before disposal. Spent catalysts are still pyrophoric and before deactivation they must be washed free of residual organic compounds and volatile solvents. Catalyst deactivation can be achieved by making a stirred 15 wt. % catalyst slurry in cold water followed by very slowly adding an equal volume of either 10 % sodium hypochlorite or 10 % sodium nitrite. During catalyst oxidation, the temperature of the slurry will increase. After adding the oxidising salt solution, heat the stirred slurry to 45 – 50 °C for about 60 – 70 minutes before collecting a sample to test the catalyst’s pyrophoricity. Once the catalyst is no longer pyrophoric it should be filtered from the slurry and if possible, allowed to remain wet.