Journal of Physical Chemistry C
Journal of Physical Chemistry C
5 years ago

Elementary Surface Reactions on Co(0001) under Fischer–Tropsch Synthesis Conditions

Elementary Surface Reactions on Co(0001) under Fischer–Tropsch Synthesis Conditions
Hong Xu, Guanghui Sun, Yuekang Jin, Weixin Huang, Lingshun Xu, Zhengming Wang, Haibin Pan
A fundamental understanding of Fischer–Tropsch synthesis (FTS) is challenging but important for catalyst design. We herein report high-resolution photoemission spectroscopic characterizations of a Co(0001) surface pretreated with syngas at different conditions without exposure to air. Elementary surface reactions were observed to sensitively depend on reaction pressures and temperatures. Both direct CO dissociation and H2-assisted CO activation for CO activation occur facilely at 300 K, while the removal of the resulting oxygen adatoms needs high temperatures. Under a typical FTS reaction condition (4 bar and 490 K), the Co(0001) surface is metallic, and direct CO dissociation is the dominant mechanism for CO activation to form irreversibly adsorbed surface intermediates including carbidic carbon, hydrocarbon fragments, atomic oxygen, and hydroxyl groups. These results significantly advance the fundamental understanding of the cobalt-catalyzed FTS process.

Publisher URL: http://dx.doi.org/10.1021/acs.jpcc.7b07531

DOI: 10.1021/acs.jpcc.7b07531

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.