Microstructural and defect analysis of metal nanoparticles in functional catalysts by diffraction and electron microscopy

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Microstructural and defect analysis of metal nanoparticles in functional catalysts by diffraction and electron microscopy : The Cu/ZnO catalyst for methanol synthesis. / Kandemir, Timur; Kasatkin, Igor; Girgsdies, Frank; Zander, Stefan; Kühl, Stefanie; Tovar, Michael; Schlögl, Robert; Behrens, Malte.

In: Topics in Catalysis, Vol. 57, No. 1-4, 01.02.2014, p. 188-206.

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

Author

Kandemir, Timur ; Kasatkin, Igor ; Girgsdies, Frank ; Zander, Stefan ; Kühl, Stefanie ; Tovar, Michael ; Schlögl, Robert ; Behrens, Malte. / Microstructural and defect analysis of metal nanoparticles in functional catalysts by diffraction and electron microscopy : The Cu/ZnO catalyst for methanol synthesis. In: Topics in Catalysis. 2014 ; Vol. 57, No. 1-4. pp. 188-206.

BibTeX

@article{2a3aef6d2f8e4c7ab0bad3bf4d10504f,

title = "Microstructural and defect analysis of metal nanoparticles in functional catalysts by diffraction and electron microscopy: The Cu/ZnO catalyst for methanol synthesis",

abstract = "The application of different methods for a microstructural analysis of functional catalysts is reported for the example of different Cu/ZnO-based methanol synthesis catalysts. Transmission electron microscopy and diffraction were used as complementary techniques to extract information on the size and the defect concentration of the Cu nano-crystallites. The results, strengths and limitations of the two techniques and of different evaluation methods for line profile analysis of diffraction data including Rietveld-refinement, Scherrer- and (modified) Williamson-Hall-analyses, single peak deconvolution and whole powder pattern modeling are compared and critically discussed. It was found that in comparison with a macrocrystalline pure Cu sample, the catalysts were not only characterized by a smaller crystallite size, but also by a high concentration of lattice defects, in particular stacking faults. Neutron diffraction was introduced as a valuable tool for such analysis, because of the larger number of higher-order diffraction peaks that can be detected with this method. An attempt is reported to quantify the different types of defects for a selected catalyst.",

keywords = "Copper, Defects, Diffraction, Electron microscopy, Methanol synthesis, Microstructure",

author = "Timur Kandemir and Igor Kasatkin and Frank Girgsdies and Stefan Zander and Stefanie K{\"u}hl and Michael Tovar and Robert Schl{\"o}gl and Malte Behrens",

year = "2014",

month = feb,

day = "1",

doi = "10.1007/s11244-013-0175-2",

language = "English",

volume = "57",

pages = "188--206",

journal = "Topics in Catalysis",

issn = "1022-5528",

publisher = "Springer Nature",

number = "1-4",

}

RIS

TY - JOUR

T1 - Microstructural and defect analysis of metal nanoparticles in functional catalysts by diffraction and electron microscopy

T2 - The Cu/ZnO catalyst for methanol synthesis

AU - Kandemir, Timur

AU - Kasatkin, Igor

AU - Girgsdies, Frank

AU - Zander, Stefan

AU - Kühl, Stefanie

AU - Tovar, Michael

AU - Schlögl, Robert

AU - Behrens, Malte

PY - 2014/2/1

Y1 - 2014/2/1

N2 - The application of different methods for a microstructural analysis of functional catalysts is reported for the example of different Cu/ZnO-based methanol synthesis catalysts. Transmission electron microscopy and diffraction were used as complementary techniques to extract information on the size and the defect concentration of the Cu nano-crystallites. The results, strengths and limitations of the two techniques and of different evaluation methods for line profile analysis of diffraction data including Rietveld-refinement, Scherrer- and (modified) Williamson-Hall-analyses, single peak deconvolution and whole powder pattern modeling are compared and critically discussed. It was found that in comparison with a macrocrystalline pure Cu sample, the catalysts were not only characterized by a smaller crystallite size, but also by a high concentration of lattice defects, in particular stacking faults. Neutron diffraction was introduced as a valuable tool for such analysis, because of the larger number of higher-order diffraction peaks that can be detected with this method. An attempt is reported to quantify the different types of defects for a selected catalyst.

AB - The application of different methods for a microstructural analysis of functional catalysts is reported for the example of different Cu/ZnO-based methanol synthesis catalysts. Transmission electron microscopy and diffraction were used as complementary techniques to extract information on the size and the defect concentration of the Cu nano-crystallites. The results, strengths and limitations of the two techniques and of different evaluation methods for line profile analysis of diffraction data including Rietveld-refinement, Scherrer- and (modified) Williamson-Hall-analyses, single peak deconvolution and whole powder pattern modeling are compared and critically discussed. It was found that in comparison with a macrocrystalline pure Cu sample, the catalysts were not only characterized by a smaller crystallite size, but also by a high concentration of lattice defects, in particular stacking faults. Neutron diffraction was introduced as a valuable tool for such analysis, because of the larger number of higher-order diffraction peaks that can be detected with this method. An attempt is reported to quantify the different types of defects for a selected catalyst.

KW - Copper

KW - Defects

KW - Diffraction

KW - Electron microscopy

KW - Methanol synthesis

KW - Microstructure

UR - http://www.scopus.com/inward/record.url?scp=84896562289&partnerID=8YFLogxK

U2 - 10.1007/s11244-013-0175-2

DO - 10.1007/s11244-013-0175-2

M3 - Article

AN - SCOPUS:84896562289

VL - 57

SP - 188

EP - 206

JO - Topics in Catalysis

JF - Topics in Catalysis

SN - 1022-5528

IS - 1-4

ER -

ID: 42301006