This paper investigates on the contribution of hemicelluloses, cellulose, and lignin to the carbon mass and the textural properties of activated carbons produced from lignocellulosic precursors by phosphoric acid activation. Four raw materials (olive pomace, miscanthus, tomato plants, and poplar wood) were tested. Nitrogen adsorption-desorption at 77 K was used to determine the porous properties of chars and activated carbons produced from the biomass residues studied. A predictive calculation, based on the biochemical composition of the raw materials, was studied to evaluate the heat treatment yields without and with the activating agent and the respective contributions of hemicelluloses, cellulose, and lignin to the chars and to the subsequent activated carbons of various precursors in terms of carbon weight fraction. The results of this calculation were compared with the experimental ones. This study shows that the contribution (in carbon mass %) of hemicellulose, cellulose, and lignin in the final activated carbons after a phosphoric acid activation is very close to the biochemical composition of the lignocellulosic precursor. It was also found that lignin is responsible for the microporous domain in the activated carbon in contrast with hemicelluloses and cellulose which are responsible for the formation of the mesoporous domain.

本文研究了半纤维素，纤维素和木质素对木质素前体通过磷酸活化产生的活性炭的碳量和质构性质的贡献。测试了四种原材料（橄榄果渣，桔梗，番茄植物和杨木）。氮气在77 K下的吸附-脱附用于确定由研究的生物质残渣产生的炭和活性炭的多孔性。基于原料的生化成分，进行了预测性计算，以评估不使用活化剂和使用活化剂以及半纤维素，纤维素和木质素对炭和随后的各种活性炭各自贡献的热处理产率前体的碳重量分数。计算结果与实验结果进行了比较。该研究表明，磷酸活化后，半纤维素，纤维素和木质素在最终活化碳中的贡献（以碳质量％计）非常接近木质纤维素前体的生化组成。还发现木质素负责活性炭中的微孔结构域，而半纤维素和纤维素则负责中孔结构域的形成。