Environmental transmission electron microscopy (ETEM) studies of single iron nanoparticle carburization in synthesis gas

Xi Liu; Chenghua Zhang; Yongwang Li; J.W. Niemantsverdriet; Jakob B. Wagner; Thomas W. Hansen

doi:10.1021/acscatal.7b00946

Environmental transmission electron microscopy (ETEM) studies of single iron nanoparticle carburization in synthesis gas

Xi Liu
, Chenghua Zhang
, Yongwang Li
, J.W. Niemantsverdriet
, Jakob B. Wagner
, Thomas W. Hansen

Onderzoeksoutput: Bijdrage aan tijdschrift › Tijdschriftartikel › Academic › peer review

77 Citaten (Scopus)

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Structural evolution of iron nanoparticles involving the formation and growth of iron carbide nuclei in the iron nanoparticle was directly visualized at the atomic level, using environmental transmission electron microscopy (TEM) under reactive conditions mimicking Fischer-Tropsch synthesis. Formation of the iron carbide nuclei and surface reconstruction of the iron nanoparticle play an essential role in carburization of the iron nanoparticle and consequent formation of Fe₅C₂. Identification of carbide and oxide intermediates evidenced by high-resolution TEM images, electron diffraction patterns and electron energy-loss spectra provides a detailed picture from initial activation to final degradation of iron under synthesis gas. (Chemical Equation Presented).

Originele taal-2	Engels
Pagina's (van-tot)	4867-4875
Aantal pagina's	9
Tijdschrift	ACS Catalysis
Volume	7
Nummer van het tijdschrift	7
DOI's	https://doi.org/10.1021/acscatal.7b00946
Status	Gepubliceerd - 7 jul. 2017

Financiering

We thank Dr. Emad Dad (Eindhoven University of Technology) for assistance with the synthesis of the iron nanoparticles. We gratefully acknowledge financial support from Syngaschem BV, Synfuels China Technology Co., Ltd., and the National Natural Science Foundation of China (NSFC Grant No. 21673273 and 91545109). The manuscript was written through contributions of all authors. All authors have given approval to the final version of the manuscript.

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title = "Environmental transmission electron microscopy (ETEM) studies of single iron nanoparticle carburization in synthesis gas",

abstract = "Structural evolution of iron nanoparticles involving the formation and growth of iron carbide nuclei in the iron nanoparticle was directly visualized at the atomic level, using environmental transmission electron microscopy (TEM) under reactive conditions mimicking Fischer-Tropsch synthesis. Formation of the iron carbide nuclei and surface reconstruction of the iron nanoparticle play an essential role in carburization of the iron nanoparticle and consequent formation of Fe5C2. Identification of carbide and oxide intermediates evidenced by high-resolution TEM images, electron diffraction patterns and electron energy-loss spectra provides a detailed picture from initial activation to final degradation of iron under synthesis gas. (Chemical Equation Presented).",

keywords = "EELS, environmental TEM, Fischer-Tropsch synthesis, in situ, iron carbide",

author = "Xi Liu and Chenghua Zhang and Yongwang Li and J.W. Niemantsverdriet and Wagner, \{Jakob B.\} and Hansen, \{Thomas W.\}",

year = "2017",

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AU - Wagner, Jakob B.

AU - Hansen, Thomas W.

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AB - Structural evolution of iron nanoparticles involving the formation and growth of iron carbide nuclei in the iron nanoparticle was directly visualized at the atomic level, using environmental transmission electron microscopy (TEM) under reactive conditions mimicking Fischer-Tropsch synthesis. Formation of the iron carbide nuclei and surface reconstruction of the iron nanoparticle play an essential role in carburization of the iron nanoparticle and consequent formation of Fe5C2. Identification of carbide and oxide intermediates evidenced by high-resolution TEM images, electron diffraction patterns and electron energy-loss spectra provides a detailed picture from initial activation to final degradation of iron under synthesis gas. (Chemical Equation Presented).

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KW - Fischer-Tropsch synthesis

KW - in situ

KW - iron carbide

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Environmental transmission electron microscopy (ETEM) studies of single iron nanoparticle carburization in synthesis gas

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