Catalytic Decomposition Of Biomass Tar Over Palygorskite Clay Supported Ni/fe

Based on the previous work, a system with a laboratory-scale fixed-bed reactor to catalytic cracking of biomass tar and a complete method of gases analysis, carbon deposition analysis and solid catalyst characterization are established in this paper. Effect of the ratio between palygorskite clay and dolomite on catalytic cracking of biomass tar is investigated. The same loading of Ni is supported on different natural mineral to catalytic cracking of biomass tar, which is compared with thermal cracking of biomass tar over quartz. The result shows that palygorskite-supported Ni perenst the best catalytic activity. Then effect of different additives and additives loading on catalytic cracking of biomass tar is studied. The result presents that catalyst have the best tar conversion and hydrogen yield when it is modified by Fe during the additives of Fe, Mg, Mn, Ce. The effect of Ni (Fe) loading on catalytic cracking of biomass tar over palygorskite-supported 6% Fe (Ni) catalyst is researched. The effect of catalyst preparation method on catalytic cracking of biomass tar is investigated and the mechanism of catalytic cracking of tar over palygorskite-supported Fe/Ni nanomaterials is analyzed simply.