Tuning interaction between cobalt catalysts and nitrogen dopants in carbon nanospheres to promote Fischer-Tropsch synthesis

doi:10.1016/j.apcatb.2019.02.024

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Tuning interaction between cobalt catalysts and nitrogen dopants in carbon nanospheres to promote Fischer-Tropsch synthesis
	Cheng, QP ; Zhao, N ; Lyu, SS ; Tian, Y ; Gao, F ; Dong, L ; Jiang, Z ; Zhang, J ; Tsubaki, N ; Li, XG
刊名	APPLIED CATALYSIS B-ENVIRONMENTAL
	2019
卷号	248 期号:-页码:73—83
关键词	DOPED MESOPOROUS CARBON IRON CATALYSTS CO/SIO2 CATALYSTS CO HYDROGENATION LOWER OLEFINS NANOTUBES PERFORMANCE OXYGEN REDUCTION SUPPORT
ISSN号	0926-3373
DOI	10.1016/j.apcatb.2019.02.024
文献子类	期刊论文
英文摘要	N-doped carbon supports are promising to improve reduction degree and dispersion of metal catalysts in Fischer-Tropsch synthesis (FTS). However, it is a great challenge to reasonably construct desired N dopants on FTS catalysts. Herein, we report the high FTS performance of the Co catalysts supported on N-doped carbon nanospheres synthesized by using a facile strategy. Through precisely tailoring the N dopants, we discover that the interaction between cobalt catalysts and supports is significantly strengthened via donation electron function of N atoms, especially for pyrrolic N. It improves the dispersion of cobalt species to generate more electron-enriched cobalt sites, which can strongly adsorb CO and accelerate CO dissociation to C, resulting in the enhanced catalytic activity. In addition, these in turn increase C concentration on the surface of the active cobalt sites, which is favorable to form a high concentration of chain initiators CH2 to stimulate carbon-chain growth, inducing the high selectivity towards the C5(+) products in FTS. Accordingly, the Co/NCS-500 catalyst with the high content of pyrrolic N presents the high FTS activity and C5(+) selectivity. Our work provides a new avenue in rational development of other related heterogeneous catalysis.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/31890]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Tianjin Univ, Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin Key Lab Appl Catalysis Sci & Technol, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China; 2.Nanjing Univ, Jiangsu Key Lab Vehicle Emiss Control, Ctr Modern Anal, Lab XPS,Sch Environm, Nanjing 210093, Jiangsu, Peoples R China; 3.Chinese Acad Sci, Shanghai Synchrotron Radiat Facil, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China; 4.Chinese Acad Sci, Beijing Synchrotron Radiat Facil, Inst High Energy Phys, Beijing 100049, Peoples R China; 5.Univ Toyama, Dept Appl Chem, Sch Engn, Gofuku 3190, Toyama 9308555, Japan
推荐引用方式 GB/T 7714	Cheng, QP,Zhao, N,Lyu, SS,et al. Tuning interaction between cobalt catalysts and nitrogen dopants in carbon nanospheres to promote Fischer-Tropsch synthesis[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2019,248(-):73—83.
APA	Cheng, QP.,Zhao, N.,Lyu, SS.,Tian, Y.,Gao, F.,...&Li, XG.(2019).Tuning interaction between cobalt catalysts and nitrogen dopants in carbon nanospheres to promote Fischer-Tropsch synthesis.APPLIED CATALYSIS B-ENVIRONMENTAL,248(-),73—83.
MLA	Cheng, QP,et al."Tuning interaction between cobalt catalysts and nitrogen dopants in carbon nanospheres to promote Fischer-Tropsch synthesis".APPLIED CATALYSIS B-ENVIRONMENTAL 248.-(2019):73—83.