Student or educator? Sign up with your school email and get 6 months of Pro free.
CoChat
Sign Up
Cited by 332

The DOI matches its Crossref record; 32 of the 32 references it cites were found in a registry or an index.

Structure−Activity Relationship in Nanostructured Copper−Ceria-Based Preferential CO Oxidation Catalysts

Gamarra, D., Munuera, G., Hungría, A. B., Fernández-García, M., Conesa, J. C., Midgley, P. A., Wang, X. Q., Hanson, J. C., Rodríguez, J. A., Martínez-Arias, A.·2007·The Journal of Physical Chemistry C
DOI 10.1021/jp072243k
Open this paper in CoChat — free account

Abstract

Two series of nanostructured oxidized copper−cerium catalysts with varying copper loadings, and prepared, respectively, by impregnation of ceria and by coprecipitation of the two components within reverse microemulsions, have been characterized in detail at structural and electronic levels by X-ray diffraction (XRD), Raman spectroscopy, high-resolution electron microscopy (HREM), X-ray energy dispersive spectroscopy (XEDS), X-ray photoelectron spectroscopy (XPS) (including Ar + -sputtering), and X-ray absorption fine structure (XAFS). These results have been correlated with analysis of their catalytic properties for preferential oxidation of CO in a H 2 -rich stream (CO-PROX), complemented by Operando−DRIFTS. A relevant difference between the two series of catalysts concerns the nature of the support for the surface-dispersed copper oxide entities, which is essentially ceria for the samples prepared by impregnation and a Ce−Cu mixed oxide for those prepared by microemulsion−coprecipitation. The existence of copper segregation in the form of copper oxide or copper-enriched Cu−Ce mixed oxides for the latter type of samples is uniquely revealed by nanoprobe XEDS and XPS Ar + -sputtering experiments. The CO oxidation activity under CO-PROX conditions is correlated to the degree of support-promoted reduction achieved by the dispersed copper oxide particles under reaction conditions. Nevertheless, catalysts which display higher CO oxidation activity are generally more efficient also for the undesired H 2 oxidation reaction. The balance between both reactions results in differences in the CO-PROX activity between the two series of catalysts which are examined on the basis of the structural differences found.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1021/jp072243k

Cites

32 of 32 references verified0 citation errors · 0 not checkable

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cites

Cited by

See all 332

Metadata

Authors
Gamarra, D., Munuera, G., Hungría, A. B., Fernández-García, M., Conesa, J. C., Midgley, P. A., Wang, X. Q., Hanson, J. C., Rodríguez, J. A., & Martínez-Arias, A.
Venue
The Journal of Physical Chemistry C
Publisher
American Chemical Society (ACS)
Published
2007-07-01
Volume
111
Issue
29
Pages
11026-11038
ISSN
  • 1932-7447 (ISSN-L)
  • 1932-7455
DOI
10.1021/jp072243k
OpenAlex
W1995761354
Cited by
332
References
32
FWCI
9.32
Type
journal article
Language
en
Open access
closed

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review

Data sources

Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.