The texture evolution of g-C3N4nanosheets supported Fe catalyst during Fischer-Tropsch synthesis

doi:10.1016/j.molcata.2016.12.011

	The texture evolution of g-C3N4nanosheets supported Fe catalyst during Fischer-Tropsch synthesis
	Chen, Zheng 1,2; Zhang, Juan 1; Zheng, Shenke 1,2,3; Ding, Jian 1,2; Sun, Jiaqiang 1; Dong, Mei 1; Abbas, Mohamed 1,5; Chen, Yilong 3; Jiang, Zheng 4; Chen, Jiangang 1
刊名	Molecular Catalysis
	2018
卷号	444 页码:90-99
ISSN号	24688231
DOI	10.1016/j.molcata.2016.12.011
英文摘要	Graphitic carbon nitride (GCN) nanosheets decorated with iron nanoparticles (Fe/g-C3N4) were synthesized and used as catalysts in FTS. The crystal structure and morphology of Fe/g-C3N4were characterized with XRD, FT-IR, HRTEM, EXAFS, BET, and its texture evolution during Fischer-Tropsch synthesis was monitored. It was shown that there were two types of iron species in Fe/GCN, i.e., “dissolved iron”, in which irons dissolved into g-C3N4matrix as single atoms, and formed mainly at low Fe loadings. In contrast, when the loading exceeded the dissolved saturation, the irons would coordinate with (-N-C[tbnd]N-)2−to form the second type of iron species, Fe(NCN) like species. The “dissolved iron” was more difficult to thermally decompose and convert into iron carbide than Fe(NCN) like species. Such a slow transformation gave birth to unique induction period for low loading Fe catalysts. Moreover, the N-containing bases or defects of g-C3N4might play a critical role in enhancing O/P ratio. As a result, g-C3N4supported 40 wt% Fe sample exhibited highest activity and C2=-C4=selectivity. Besides, the g-C3N4possessed a “structure memory effect” analogous to hydrotalcite. © 2017 Elsevier B.V.
出版者	Elsevier B.V.
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/25194]
专题	中国科学院上海硅酸盐研究所
作者单位	1.State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan; Shanxi; 030001, China; 2.University of Chinese Academy of Sciences, Beijing; 100049, China; 3.State Key Laboratory of Biomass Thermal Chemistry Technology, Sunshine Kaidi New Energy Group Co., Ltd., Wuhan; 430223, China; 4.Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai; 201204, China; 5.Ceramics Department, National Research Centre, El-Bohouth Str., Cairo; 12622, Egypt
推荐引用方式 GB/T 7714	Chen, Zheng,Zhang, Juan,Zheng, Shenke,et al. The texture evolution of g-C3N4nanosheets supported Fe catalyst during Fischer-Tropsch synthesis[J]. Molecular Catalysis,2018,444:90-99.
APA	Chen, Zheng.,Zhang, Juan.,Zheng, Shenke.,Ding, Jian.,Sun, Jiaqiang.,...&Chen, Jiangang.(2018).The texture evolution of g-C3N4nanosheets supported Fe catalyst during Fischer-Tropsch synthesis.Molecular Catalysis,444,90-99.
MLA	Chen, Zheng,et al."The texture evolution of g-C3N4nanosheets supported Fe catalyst during Fischer-Tropsch synthesis".Molecular Catalysis 444(2018):90-99.