Qin Hengfei, Li Yan, Dong Ruoyu, Yuan Jiafeng, Zhou Yue, Hu Yaxin, Jia Hailang, Bai Jirong, Gong Jie, Jiang Jinlong, Zhou Quanfa
School of Chemistry and Environmental Engineering, Jiangsu University of Technology, No. 1801, Zhongwu Road, Changzhou City 213001, China.
Jiangsu Key Laboratory of E-Waste Recycling, Jiangsu University of Technology, No. 1801, Zhongwu Road, Changzhou City 213001, China.
ACS Omega. 2021 Jun 18;6(25):16592-16599. doi: 10.1021/acsomega.1c01935. eCollection 2021 Jun 29.
Catalytic activity and target product selectivity are strongly correlated to the size, crystallographic phase, and morphology of nanoparticles. In this study, waste lignin from paper pulp industry is employed as the carbon source, which is modified with carboxyl groups at the molecular level to facilitate anchoring of metals, and a new type of carbon-based catalyst was obtained after carbonization. As a result, the size of the metal particles is effectively controlled by the chelation between -COO and Fe. Furthermore, Fe/CM-CL with a particle size of 1.5-2.5 nm shows excellent catalytic performance, the conversion of carbon monoxide reaches 82.3%, and the selectivity of methane reaches 73.2%.
催化活性和目标产物选择性与纳米颗粒的尺寸、晶相和形态密切相关。在本研究中，纸浆工业的废弃木质素被用作碳源，在分子水平上用羧基进行改性以促进金属的锚定，碳化后得到了一种新型的碳基催化剂。结果，通过-COO与Fe之间的螯合作用有效地控制了金属颗粒的尺寸。此外，粒径为1.5-2.5 nm的Fe/CM-CL表现出优异的催化性能，一氧化碳转化率达到82.3%，甲烷选择性达到73.2%。
