Overcoating the Surface of Fe-Based Catalyst with ZnO and Nitrogen-Doped Carbon toward High Selectivity of Light Olefins in CO2 Hydrogenation

Junhui Liu; Anfeng Zhang; Xiao Jiang; Guanghui Zhang; Yanwei Sun; Min Liu; Fanshu Ding; Chunshan Song; Xinwen Guo

doi:10.1021/acs.iecr.8b05478

Overcoating the Surface of Fe-Based Catalyst with ZnO and Nitrogen-Doped Carbon toward High Selectivity of Light Olefins in CO₂ Hydrogenation

Junhui Liu, Anfeng Zhang, Xiao Jiang, Guanghui Zhang, Yanwei Sun, Min Liu, Fanshu Ding, Chunshan Song, Xinwen Guo

Research output: Contribution to journal › Article › peer-review

46 Scopus citations

Abstract

ZnO and nitrogen-doped carbon (NC) overcoated Fe-based catalysts (Fe@NC) were synthesized and evaluated in CO₂ hydrogenation reaction. The Fe@NC exhibited enhanced catalytic activity, stability, and high selectivity toward light olefins and C₅₊ hydrocarbons. The olefins over paraffins ratio in the range of C₂-C₄ increased 24 times from 0.07 to 1.68 compared with the benchmark Fe₃O₄ catalyst. The evolution of iron species was observed during the hydrogenation reaction. The inactive τ-Fe₃C phase disappeared, and the active phases for CO₂ hydrogenation, Fe₃O₄ and Fe₅C₂, formed during the hydrogenation reaction. Overcoating the surface of Fe-based catalysts can be used as a useful strategy to modulate the product selectivity toward sustainable production of value-added hydrocarbons from CO₂.

Original language	English (US)
Pages (from-to)	4017-4023
Number of pages	7
Journal	Industrial and Engineering Chemistry Research
Volume	58
Issue number	10
DOIs	https://doi.org/10.1021/acs.iecr.8b05478
State	Published - Mar 13 2019

All Science Journal Classification (ASJC) codes

General Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

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10.1021/acs.iecr.8b05478

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title = "Overcoating the Surface of Fe-Based Catalyst with ZnO and Nitrogen-Doped Carbon toward High Selectivity of Light Olefins in CO2 Hydrogenation",

abstract = "ZnO and nitrogen-doped carbon (NC) overcoated Fe-based catalysts (Fe@NC) were synthesized and evaluated in CO2 hydrogenation reaction. The Fe@NC exhibited enhanced catalytic activity, stability, and high selectivity toward light olefins and C5+ hydrocarbons. The olefins over paraffins ratio in the range of C2-C4 increased 24 times from 0.07 to 1.68 compared with the benchmark Fe3O4 catalyst. The evolution of iron species was observed during the hydrogenation reaction. The inactive τ-Fe3C phase disappeared, and the active phases for CO2 hydrogenation, Fe3O4 and Fe5C2, formed during the hydrogenation reaction. Overcoating the surface of Fe-based catalysts can be used as a useful strategy to modulate the product selectivity toward sustainable production of value-added hydrocarbons from CO2.",

author = "Junhui Liu and Anfeng Zhang and Xiao Jiang and Guanghui Zhang and Yanwei Sun and Min Liu and Fanshu Ding and Chunshan Song and Xinwen Guo",

note = "Publisher Copyright: {\textcopyright} 2019 American Chemical Society.",

year = "2019",

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doi = "10.1021/acs.iecr.8b05478",

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T1 - Overcoating the Surface of Fe-Based Catalyst with ZnO and Nitrogen-Doped Carbon toward High Selectivity of Light Olefins in CO2 Hydrogenation

AU - Liu, Junhui

AU - Zhang, Anfeng

AU - Jiang, Xiao

AU - Zhang, Guanghui

AU - Sun, Yanwei

AU - Liu, Min

AU - Ding, Fanshu

AU - Song, Chunshan

AU - Guo, Xinwen

PY - 2019/3/13

Y1 - 2019/3/13

N2 - ZnO and nitrogen-doped carbon (NC) overcoated Fe-based catalysts (Fe@NC) were synthesized and evaluated in CO2 hydrogenation reaction. The Fe@NC exhibited enhanced catalytic activity, stability, and high selectivity toward light olefins and C5+ hydrocarbons. The olefins over paraffins ratio in the range of C2-C4 increased 24 times from 0.07 to 1.68 compared with the benchmark Fe3O4 catalyst. The evolution of iron species was observed during the hydrogenation reaction. The inactive τ-Fe3C phase disappeared, and the active phases for CO2 hydrogenation, Fe3O4 and Fe5C2, formed during the hydrogenation reaction. Overcoating the surface of Fe-based catalysts can be used as a useful strategy to modulate the product selectivity toward sustainable production of value-added hydrocarbons from CO2.

AB - ZnO and nitrogen-doped carbon (NC) overcoated Fe-based catalysts (Fe@NC) were synthesized and evaluated in CO2 hydrogenation reaction. The Fe@NC exhibited enhanced catalytic activity, stability, and high selectivity toward light olefins and C5+ hydrocarbons. The olefins over paraffins ratio in the range of C2-C4 increased 24 times from 0.07 to 1.68 compared with the benchmark Fe3O4 catalyst. The evolution of iron species was observed during the hydrogenation reaction. The inactive τ-Fe3C phase disappeared, and the active phases for CO2 hydrogenation, Fe3O4 and Fe5C2, formed during the hydrogenation reaction. Overcoating the surface of Fe-based catalysts can be used as a useful strategy to modulate the product selectivity toward sustainable production of value-added hydrocarbons from CO2.

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Overcoating the Surface of Fe-Based Catalyst with ZnO and Nitrogen-Doped Carbon toward High Selectivity of Light Olefins in CO₂ Hydrogenation

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