Palladium nanoparticles (ca. 4.8 nm) were supported in Chitosan microspheres/Ionic Liquids using a biopolymer solution of chitosan in acetic acid. The Pd NPs were synthesized in ILs 1-n-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide and 1-n-butyl-3-methylimidazolium hexafluorophosphate. The obtained material (Pd NPs/Chitosan/ ILs) was characterized and analyzed by the techniques of XRD, TEM, SEM and EDX, FAAS, IR and BET, to evaluate the texture of the material as well as the composition, homogeneity, structure and surface area. The presence of ILs exhibited greater stability and durability to the formed material (Pd NPs/IL/Chitosan). The catalyst exhibited high catalytic activity when compared to Pd NPs only; this fact is related possibly to the large surface area and the durability provided by the support of the biopolymer. Palladium nanoparticles (ca. 4.8 nm) were supported in Chitosan microspheres/Ionic Liquids using a biopolymer solution of chitosan in acetic acid. The Pd NPs were synthesized in ILs 1-n-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide and 1-n-butyl-3-methylimidazolium hexafluorophosphate. The obtained material (Pd NPs/Chitosan/ ILs) was characterized and analyzed by the techniques of XRD, TEM, SEM and EDX, FAAS, IR and BET, to evaluate the texture of the material as well as the composition, homogeneity, structure and surface area. The presence of ILs exhibited greater stability and durability to the formed material (Pd NPs/IL/Chitosan). The catalyst exhibited high catalytic activity when compared to Pd NPs only; this fact is related possibly to the large surface area and the durability provided by the support of the biopolymer.