The texture evolution of g-C3N4 nanosheets supported Fe catalyst during Fischer-Tropsch synthesis
Chen, Z; Zhang, J; Zheng, SK; Ding, J; Sun, JQ; Dong, M; Abbas, M; Chen, YL; Jiang, Z; Chen, JG
2018
发表期刊MOLECULAR CATALYSIS
ISSN2468-8231
卷号444页码:90-99
文章类型期刊论文
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-C3N4 were 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-C3N4 matrix 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 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-C3N4 might play a critical role in enhancing O/P ratio. As a result, g-C3N4 supported 40 wt% Fe sample exhibited highest activity and C2(=)-C4(=) selectivity. Besides, the g-C3N4 possessed a "structure memory effect" analogous to hydrotalcite
关键词Graphitic Carbon Nitride Ray-absorption-spectroscopy Visible-light Iron Catalysts Photocatalytic Performance Electrocatalytic Reduction Magnetite Nanoparticles Facile Fabrication Low-temperatures Nanotubes
DOI10.1016/j.molcata.2016.12.011
收录类别SCI
语种英语
WOS记录号WOS:000418985200011
引用统计
被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/29183
专题中科院上海应用物理研究所2011-2018年
作者单位1.Chen, Z
2.Zhang, J
3.Zheng, SK
4.Ding, J
5.Sun, JQ
6.Dong, M
7.Abbas, M
8.Chen, YL
9.Jiang, Z
10.Chen, JG
推荐引用方式
GB/T 7714
Chen, Z,Zhang, J,Zheng, SK,et al. The texture evolution of g-C3N4 nanosheets supported Fe catalyst during Fischer-Tropsch synthesis[J]. MOLECULAR CATALYSIS,2018,444:90-99.
APA Chen, Z.,Zhang, J.,Zheng, SK.,Ding, J.,Sun, JQ.,...&Chen, JG.(2018).The texture evolution of g-C3N4 nanosheets supported Fe catalyst during Fischer-Tropsch synthesis.MOLECULAR CATALYSIS,444,90-99.
MLA Chen, Z,et al."The texture evolution of g-C3N4 nanosheets supported Fe catalyst during Fischer-Tropsch synthesis".MOLECULAR CATALYSIS 444(2018):90-99.
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