English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Counting of Oxygen Defects versus Metal Surface Sites in Methanol Synthesis Catalysts by Different Probe Molecules

Fichtl, M. B., Schumann, J., Kasatkin, I., Jacobsen, N., Behrens, M., Schlögl, R., et al. (2014). Counting of Oxygen Defects versus Metal Surface Sites in Methanol Synthesis Catalysts by Different Probe Molecules. Angewandte Chemie, 126(27), 7163-7167. doi:10.1002/ange.201400575.

Item is

Files

show Files
hide Files
:
Manuskript.pdf (Any fulltext), 2MB
 
File Permalink:
-
Name:
Manuskript.pdf
Description:
-
OA-Status:
Visibility:
Restricted ( Max Planck Society (every institute); )
MIME-Type / Checksum:
application/pdf
Technical Metadata:
Copyright Date:
2014
Copyright Info:
Wiley
License:
-

Locators

show

Creators

show
hide
 Creators:
Fichtl, Matthias B.1, Author
Schumann, Julia2, Author           
Kasatkin, Igor2, 3, Author           
Jacobsen, Nikolas4, Author
Behrens, Malte2, Author           
Schlögl, Robert2, Author           
Muhler, Martin5, Author
Hinrichsen, Olaf1, Author
Affiliations:
1Catalysis Research Center and Chemistry Department, Technische Universität München, Lichtenbergstrasse 4, 85748 Garching bei München (Germany), ou_persistent22              
2Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              
3Saint Petersburg State University, Research Centre for X-ray Diffraction Studies, 199155 Decabristov lane 16, St. Petersburg (Russia), ou_persistent22              
4Clariant Produkte (Deutschland) GmbH, BU Catalysts, Waldheimer Strasse 13, 83052 Bruckmühl (Germany), ou_persistent22              
5Ruhr-Universität Bochum, Fakultät für Chemie und Biochemie, Universitätsstrasse 150, 44780 Bochum (Germany), ou_persistent22              

Content

show
hide
Free keywords: Heterogene Katalyse; Katalysator-Träger-Wechselwirkungen; Kupfer; Methanol; Sauerstoff-Fehlstellen
 Abstract: Different surface sites of solid catalysts are usually quantified by dedicated chemisorption techniques from the adsorption capacity of probe molecules, assuming they specifically react with unique sites. In case of methanol synthesis catalysts, the Cu surface area is one of the crucial parameters in catalyst design and was for over 25 years commonly determined using diluted N2O. To disentangle the influence of the catalyst components, different model catalysts were prepared and characterized using N2O, temperature programmed desorption of H2, and kinetic experiments. The presence of ZnO dramatically influences the N2O measurements. This effect can be explained by the presence of oxygen defect sites that are generated at the Cu-ZnO interface and can be used to easily quantify the intensity of Cu-Zn interaction. N2O in fact probes the Cu surface plus the oxygen vacancies, whereas the exposed Cu surface area can be accurately determined by H2.

Details

show
hide
Language(s): eng - English
 Dates: 2014-03-242014-01-192014-05-212014-07-01
 Publication Status: Published in print
 Pages: 5
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1002/ange.201400575
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Angewandte Chemie
  Abbreviation : Angew. Chem.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Weinheim : Wiley-VCH Verl.
Pages: - Volume / Issue: 126 (27) Sequence Number: - Start / End Page: 7163 - 7167 Identifier: ISSN: 0044-8249
CoNE: https://pure.mpg.de/cone/journals/resource/954926979058_1