a process for heterogenizing a metal salt or organometallic complex catalyst of the type containing a group viii metal comprising the steps of radiation grafting a monomer having a α unsaturated bond to a metal or an organic polymer and complexing a nitrogen , halogen or phosphorous containing group to the monomer with the metal salt or organometallic complex . the resultant catalysts being useful in the hydrogenation , hydroformylation , isomerization , cracking or dehydrogenation of organic molecules .