文献类型：期刊文献

英文题名：Investigation of the Heteroatom Doping Effect on Gasification Fine Slag Residue Carbon Oxygen Reduction Reaction Catalysts

作者：Wang, Simin[1]; Li, Heng[1]; Gong, Yan[1]; Guo, Qinghua[1]; Yu, Guangsuo[1,2]

机构：[1] Institute of Clean Coal Technology, East China University of Science and Technology, Shanghai, 200237, China; [2] State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Ningxia, Yinchuan, 750021, China

年份：2022

外文期刊名：SSRN

收录：EI(收录号：20220403147)

语种：英文

外文关键词：Carbon dioxide - Catalysts - Chemical activation - Electrolytic reduction - Iron compounds - Organometallics - Oxygen - Pore structure - Slags - Sodium Carbonate

摘要：Coal gasification fine slag (GFS) is a kind of solid waste that is produced from industrial entrained-flow gasification plants. Using the GFS flotation residue as a carbon source for the oxygen reduction reaction (ORR) catalyst is therefore an effective recycling method that will gain great attention. In this study, the carbon residue after the flotation of fine gasification slag was used as the precursor to prepare ORR catalysts through CO2 activation. Combined with the characterization of Raman spectroscopy, XPS and SEM, the influence of N, P, Fe, Ca, and other doped elements on the physical and chemical structure of the catalyst were explored. The results demonstrate that calcium chloride caused the decrease of reactive nitrogen, and had a negative effect on the development of pore structure. The active nitrogen content of ammonium phosphate as a nitrogen source was lower than that of ammonium chloride as a nitrogen source. The co-doping of ammonium phosphate and ferrocene produces a mutual inhibitory effect, resulting in lower doping levels of phosphorus and iron. This study had great significance for the activation and heteroatom doping treatment of ORR catalysts prepared from gasification residue carbon. ? 2022, The Authors. All rights reserved.