As a verb regenerated
As a noun cataloreactant is
(chemistry) a catalytic reactant that is regenerated at the end of a reaction.
* regen (abbreviation)
To construct or create anew, especially in an improved manner.
(biology) To replace lost or damaged tissue.
To become reconstructed.
To undergo a spiritual rebirth.
(chemistry) A catalytic reactant that is regenerated at the end of a reaction