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Indonesia has a huge potential for biomass resources. The energy source from biomass has the advantage of being an renewable energy source so that it can provide a sustainable source of energy. One source of energy comes from the rest of saw wood. The potential biomass of sawn wood residue reaches 13 Giga Joules per year. Biomass has cellulose and hemicellulose content which when used as fuel will have a low economic value. To support this, the level of lignin contained in the biomass needs to be carried out a process of removal called the delignification process. The existence of a catalyst can accelerate the delignification process where the catalyst selected in this study is the Ceria-Zirconia porous particles catalyst. Ceria-Zirconia particles have been prepared by hydrothermal batch system. Ce(NO3)3.6H2O/ZrO(NO3)2.2H2O mixed solutions were used as starting materials with heating temperature in 200 until 220C. Polystyrene template polymer was injected in the cooling process after the reaction for making porous in the Ceria Zirconia particles. Catalyst of Ceria Zirconia porous particles was then applied to rapeseed wood sample for delignification process during 30 minutes. The delignification analysis showed that Ceria-Zirconia catalyst remove 86% lignin content from rapeseed wood sample over 30 minutes process time.