Adsorption and thermal decomposition of N-methylaniline on Pt(1 1 1) |
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Authors: | Kumudu Mudiyanselage Michael Trenary |
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Institution: | aDepartment of Chemistry, University of Illinois at Chicago 845 W. Taylor Street, Chicago, IL 60607-7061, United States |
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Abstract: | The adsorption and thermal decomposition of N-methylaniline (NMA) on the Pt(1 1 1) surface has been studied with reflection absorption infrared spectroscopy (RAIRS), temperature programmed desorption (TPD), and X-ray photoelectron spectroscopy (XPS). NMA adsorbs molecularly at 85 K through the nitrogen lone pair and is stable up to 300 K. At temperatures of 300–350 K it converts to two or more surface intermediates including the N-methyleneaniline (NMEA) species. This NMEA intermediate dissociates upon annealing to 450 K, and further annealing leads to the desorption of HCN and H2, leaving only C on the surface at 800 K. |
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Keywords: | Infrared absorption spectroscopy Thermal desorption spectroscopy X-ray photoelectron spectroscopy Catalysis Chemisorption Surface chemical reaction Platinum Aromatics |
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