Dear Nitin Dnyandeo Patil

Hoping you are OK.

There are several techniques for regeneration of heterogeneous deactivated catalysts:

1. Calcination.

2. Washing and calcination.

3. You can also test it with gases fluxes for removing adsorbed substances.

With kind regards,

Julián Sánchez.

Many books have been written on this subject. What is the type of deactivation? There is a reversible deactivation, e.g. coking, but also irreversible. You will not undo structural changes and most cases of poisoning

Dear Nitin Dnyandeo Patil in order to receive a really helpful answer to your question, you should try to provide a few more details about your heterogeneous deactivated catalyst. For initial information, you can find relevant articles directly on RG, e.g.:

Article Method of regenerating a deactivated catalyst

Article Heterogeneous Catalyst Deactivation and Regeneration: A Review

Article Regeneration of Selective Catalyst Reduction Catalysts Deact...

The latter two articles are even available as full texts.

I would like to add that it is easier to prevent deactivation, e.g. by purifying the substrates, than to regenerate the catalyst. Alternatively, the catalyst may be designed to increase its resistance to poisoning, fouling or sinterig. However, structural changes due to catalyst aging are difficult to prevent.

Thank you everyone for kind of your suggestions it would help me lot.