Student or educator? Sign up with your school email and get 6 months of Pro free.
CoChat
Sign Up
Cited by 377

The DOI matches its Crossref record; 25 of the 25 references it cites were found in a registry or an index.

Spectrokinetic Investigation of Reverse Water-Gas-Shift Reaction Intermediates over a Pt/CeO2 Catalyst

Goguet, Alexandre, Meunier, Frederic C., Tibiletti, Daniele, Breen, John P., Burch, Robbie·2004·The Journal of Physical Chemistry B
DOI 10.1021/jp047242w
Open this paper in CoChat — free account

Abstract

The reactivity of the surface species present over a 2%Pt/CeO 2 catalyst during the reverse water-gas-shift (RWGS) reaction was investigated by a detailed operando spectrokinetic analysis. A single reactor common for the kinetic and the spectroscopic measurements was used. The reactor employed was a modified high-temperature diffuse reflectance FT-IR (DRIFT) cell from SpectraTech. The reactivity of the surface species was monitored by DRIFT spectroscopy (DRIFTS) and mass spectrometry (MS) using steady-state isotopic transient kinetic analysis (SSITKA) techniques, i.e., switching between 1% CO 2 + 4% H 2 reaction mixtures containing either 13 CO 2 or 12 CO 2 . The combination of these techniques allowed time-resolved simultaneous monitoring of the variation of the coverage of 12 C and 13 C-containing surface intermediates and the concentration of the gas-phase products 12 CO(g) and 13 CO(g) due to the isotope exchange. These results clearly indicated that surface formates observed by DRIFTS were not the main reaction intermediates for the formation of CO(g) over the present catalyst under these experimental conditions, although the formation of CO(g) from formates was likely to occur to a limited extent. A quantitative analysis of the number of reactive surface species also showed that Pt-bound carbonyls could not be the only reaction intermediate. Surface carbonates are shown as being a main surface intermediate in the formation of CO(g). A reaction scheme involving a direct reoxidation of the ceria support by the CO 2 via surface carbonates is suggested. A parallel between these results and mechanisms previously proposed for CO 2 hydrogenation and CO 2 -reforming (i.e., dry-reforming) of methane on redox oxide-supported noble metal is made. In a more general perspective, the present data underlines the feasibility and appropriateness of the DRIFT−MS−SSITKA technique based on a single reactor in providing critical information about the nature of surface species (e.g., kinetic intermediate as opposed to spectator) on catalysts when the surface species are observable by DRIFT spectroscopy.

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/jp047242w

Cites

25 of 25 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 377

Metadata

Authors
Goguet, A., Meunier, F. C., Tibiletti, D., Breen, J. P., & Burch, R.
Venue
The Journal of Physical Chemistry B
Publisher
American Chemical Society (ACS)
Published
2004-11-25
Volume
108
Issue
52
Pages
20240-20246
ISSN
  • 1520-5207 (ISSN-L)
  • 1520-6106
DOI
10.1021/jp047242w
OpenAlex
W2044358811
Cited by
377
References
25
FWCI
7.92
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.