Potassium-promoted magnesium ferrite on 3D porous graphene as highly efficient catalyst for CO hydrogenation to lower olefins

doi:10.1016/j.jcat.2019.04.024

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	Potassium-promoted magnesium ferrite on 3D porous graphene as highly efficient catalyst for CO hydrogenation to lower olefins
	Cheng, Y ; Tian, J ; Lin, J ; Wang, SW ; Xie, SH ; Pei, Y ; Yan, SR ; Qiao, MH ; Xu, HL ; Zong, BN
刊名	JOURNAL OF CATALYSIS
	2019
卷号	374 页码:24-35
关键词	FISCHER-TROPSCH SYNTHESIS SUPPORTED IRON CATALYSTS WATER-GAS SHIFT DIRECT CONVERSION CARBON NANOTUBES SELECTIVE CONVERSION STRUCTURED GRAPHENE LIGHT OLEFINS FE CATALYSTS THIN-FILMS
ISSN号	0021-9517
DOI	10.1016/j.jcat.2019.04.024
文献子类	期刊论文
英文摘要	Three-dimensional (3D) honeycomb-like structured graphene (HSG)-supported ternary K-promoted magnesium ferrite catalysts (K-MgFe/HSG) are prepared and evaluated in Fischer-Tropsch synthesis to the lower olefins (FTO). The catalysts bear interconnected mesoporous-macroporous framework of graphene nanosheets decorated with homogeneously sized magnesium ferrite nanoparticles (NPs). Under typical FTO reaction conditions, the composition-optimized 1K-MgFe/HSG catalyst affords a reduced CO2 selectivity of 40.4%, an excellent weight specific activity to hydrocarbons of 1825 mu mol(CO) g(Fe)(-1) s(-1), and an appreciable selectivity to the lower olefins (C-2 -C-4 olefins) of 57.8%, thus giving rise to a record high productivity of the lower olefins of 1055 mu mol(CO) g(Fe)(-1) s(-1) The excellent catalytic efficiency is tentatively attributed to the synergetic effect of Mg and K on adsorption and dissociation of CO. The catalyst also exhibits better durability than previously reported iron-based FTO catalysts, without significant changes in the catalytic performance and the size of the iron carbide NPs after 120 h on stream, highlighting the crucial role of the 3D porous HSG support in restricting the agglomeration of the active phase during the challenging high-temperature and exothermic FTO reaction. (C) 2019 Elsevier Inc. All rights reserved.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/32165]
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.SINOPEC, State Key Lab Catalyt Mat & Chem Engn, Res Inst Petr Proc, Beijing 100083, Peoples R China 2.Fudan Univ, Collaborat Innovat Ctr Chem Energy Mat, Dept Chem, Shanghai 200438, Peoples R China; 3.Fudan Univ, Shanghai Key Lab Mol Catalysis & Innovat Mat, Shanghai 200438, Peoples R China; 4.Chinese Acad Sci, Key Lab Nucl Anal Tech, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China;
推荐引用方式 GB/T 7714	Cheng, Y,Tian, J,Lin, J,et al. Potassium-promoted magnesium ferrite on 3D porous graphene as highly efficient catalyst for CO hydrogenation to lower olefins[J]. JOURNAL OF CATALYSIS,2019,374:24-35.
APA	Cheng, Y.,Tian, J.,Lin, J.,Wang, SW.,Xie, SH.,...&Zong, BN.(2019).Potassium-promoted magnesium ferrite on 3D porous graphene as highly efficient catalyst for CO hydrogenation to lower olefins.JOURNAL OF CATALYSIS,374,24-35.
MLA	Cheng, Y,et al."Potassium-promoted magnesium ferrite on 3D porous graphene as highly efficient catalyst for CO hydrogenation to lower olefins".JOURNAL OF CATALYSIS 374(2019):24-35.