Affordable Access

deepdyve-link
Publisher Website

Reactivity of Carbon Dioxide on Nickel: Role of CO in the Competing Interplay between Oxygen and Graphene.

Authors
  • Monachino, Enrico
  • Greiner, Mark
  • Knop-Gericke, Axel
  • Schlögl, Robert
  • Dri, Carlo
  • Vesselli, Erik
  • Comelli, Giovanni
Type
Published Article
Journal
The Journal of Physical Chemistry Letters
Publisher
American Chemical Society
Publication Date
Jun 05, 2014
Volume
5
Issue
11
Pages
1929–1934
Identifiers
DOI: 10.1021/jz5007675
PMID: 26273875
Source
Medline
Keywords
License
Unknown

Abstract

The catalytic conversion of carbon dioxide to synthetic fuels and other valuable chemicals is an issue of global environmental and economic impact. In this report we show by means of X-ray photoelectron spectroscopy in the millibar range that, on a Ni surface, the reduction of carbon dioxide is indirectly governed by the CO chemistry. While the growth of graphene and the carbide-graphene conversion can be controlled by selecting the reaction temperature, oxygen is mainly removed by CO, since oxygen reduction by hydrogen is a slow process on Ni. Even though there is still a consistent pressure gap with respect to industrial reaction conditions, the observed phenomena provide a plausible interpretation of the behavior of Ni/Cu based catalysts for CO2 conversion and account for a possible role of CO in the methanol synthesis process.

Report this publication

Statistics

Seen <100 times