Direct versus Hydrogen-Assisted CO Dissociation
- 19 August 2009
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 131 (36), 12874-12875
- https://doi.org/10.1021/ja9044482
Abstract
The mechanism of CO dissociation is a fundamental issue in the technologically important Fischer−Tropsch (F−T) process that converts synthesis gas into liquid hydrocarbons. In the present study, we propose that on a corrugated Ru surface consisting of active sixfold (i.e., fourfold + twofold) sites, direct CO dissociation has a substantially lower barrier than the hydrogen-assisted paths (i.e., via HCO or COH intermediates). This proves that the F−T process on corrugated Ru surfaces and nanoparticles with active sixfold sites initiates through direct CO dissociation instead of hydrogenated intermediates.Keywords
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