2013
DOI: 10.1021/jp312373a
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Spectroscopic Identification of Surface Intermediates in the Dehydrogenation of Ethylamine on Pt(111)

Abstract: Reflection absorption infrared spectroscopy, temperature-programmed desorption, and density functional theory (DFT) have been used to study the surface chemistry and thermal decomposition of ethylamine (CH 3 CH 2 NH 2 ) on Pt(111). Ethylamine adsorbs molecularly at 85 K, is stable up to 300 K, and is partially dehydrogenated at 330 K to form aminovinylidene (CCHNH 2 ), a stable surface intermediate that partially desorbs as acetonitrile (CH 3 CN) at 340−360 K. DFT simulations using various surface models confi… Show more

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Cited by 4 publications
(4 citation statements)
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“…Note that the formation of NCCH 3 would require the exchange of hydrogen atoms between molecules, perhaps via the surface. Our experiments with l -Asp-4- 13 C, l -Asp- d 7 , l -Asp-2,3,3- d 3 , and l -Asp- 15 N-2,3,3- d 3 have been conducted with the goal of determining the distribution of H and D atoms in the product acetonitrile.…”
Section: Resultsmentioning
confidence: 99%
“…Note that the formation of NCCH 3 would require the exchange of hydrogen atoms between molecules, perhaps via the surface. Our experiments with l -Asp-4- 13 C, l -Asp- d 7 , l -Asp-2,3,3- d 3 , and l -Asp- 15 N-2,3,3- d 3 have been conducted with the goal of determining the distribution of H and D atoms in the product acetonitrile.…”
Section: Resultsmentioning
confidence: 99%
“…The CCN skeleton of the CHCN is approximately parallel to the surface, with the C–C and C–N bond lengths at 1.36 and 1.22 Å, respectively. The bond distances suggest the existence of delocalized π system over the C–C–N backbone …”
Section: Results and Discussionmentioning
confidence: 99%
“…The bond distances suggest the existence of delocalized π system over the C−C−N backbone. 36 The CH 2 CN and CHCN structures (Figure 3) were obtained, without considering the lateral effect among adsorbed molecules, and may be more appropriate for lower surface concentrations. Figure 4 and Figure S3 show the change in the infrared absorptions of 7.0 and 3.0 L of ICH 2 CN on Cu(100) with temperature.…”
Section: ■ Results and Discussionmentioning
confidence: 99%
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