This study aims to further understand the effect of carbon structure on the physiochemical status of metals and thus its activity during volatile-char interactions. The chars with distinctly different carbon substrates prepared from the pyrolysis of pine sawdust at 400 and 1000 °C were impregnated by different Fe contents, which were used as catalysts for benzyl phenyl ether (BPE, a typical lignin dimer) decomposition. The results demonstrated that the conversion of BPE was prominently improved with the iron addition, especially when the char prepared at the high temperature was loaded with 10% and 20% iron. The difference in carbon structure of two original chars have clearly resulted in the co-existence of various Fe_xO_y in chars at 400 °C and the dominant presence of α-Fe₂O₃ in chars at 1000 °C. Together with the Fe-containing active sites, the high orientation of carbon structure in the char from 1000 °C has considerably favored the high selectivity of product formation during the catalytic reforming of BPE and its derived volatile components.

这项研究的目的是进一步了解碳结构对金属的物理化学状态的影响，并由此了解其在挥发炭相互作用中的活性。在400和1000°C的高温下，由松木屑热解制得的碳底物截然不同的焦炭被不同的Fe含量浸渍，这些炭被用作苄基苯基醚（BPE，一种典型的木质素二聚体）分解的催化剂。结果表明，随着铁的加入，BPE的转化率显着提高，特别是当在高温下制备的焦炭中加入10％和20％的铁时。两种原始炭的碳结构差异显然导致在400°C的炭中各种Fe _x O _y共存，并且主要存在α-Fe1000°C下₂ O ₃以炭为单位。从1000°C开始，炭中的含碳活性位点与碳结构的高取向极大地促进了BPE及其衍生的挥发性组分催化重整过程中产物形成的高选择性。