A fast XPS investigation of NO-promoted acetylene cyclotrimerisation on Pd{111}

Lee, Adam F., Ormerod, R. Mark, Wilson, Karen, Lambert, Richard M., Goldoni, Andrea and Baraldi, Alessandro (2002). A fast XPS investigation of NO-promoted acetylene cyclotrimerisation on Pd{111}. Surface science, 501 (1-2), L165–L170.

Abstract

The strong promotion by NO of acetylene cyclotrimerisation to benzene on Pd{1 1 1} has been investigated by fast XPS, supported by LEED and Δφ data. Islands of NO act to compress co-existing islands of acetylene. The resulting increase in acetylene density dramatically lowers the nominal threshold acetylene coverage required for reaction. In addition, the threshold reaction temperature is reduced from 150 to <100 K, and increased lateral interactions within the organic domains promote formation of tilted benzene. Co-adsorption of NO with benzene itself accelerates the desorption of both tilted and flat-lying benzene at low temperatures. These factors act to increase the yield of reactively formed benzene to 100%, completely suppressing carbon deposition that would otherwise result from decomposition of reactant and product.

Publication DOI: https://doi.org/10.1016/S0039-6028(01)01982-3
Divisions: Engineering & Applied Sciences > Chemical engineering & applied chemistry
Engineering & Applied Sciences > European Bioenergy Research Institute (EBRI)
Uncontrolled Keywords: x-ray photoelectron spectroscopy,catalysis,surface chemical reaction,nitrogen oxides,alkynes
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
Published Date: 2002-03-20
Authors: Lee, Adam F. ( 0000-0002-2153-1391)
Ormerod, R. Mark
Wilson, Karen ( 0000-0003-4873-708X)
Lambert, Richard M.
Goldoni, Andrea
Baraldi, Alessandro

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