Alternate Pathway to Ammonia Formation in NOx Reduction: Direct Reaction of Acetylene and Nitrogen Atoms on Pt (111)

Yin, Jun; Trenary, Michael; Meyer, Randall J.

doi:10.1021/cs200366k

Cited by 1 publication

(3 citation statements)

References 32 publications

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“…As shown in the Supporting Information, the dominant pathway for removal of the nitrogen that does not form benzonitrile is through the desorption of ammonia rather than of N 2 . The formation of ammonia in this case is similar to what we recently reported for the reaction of acetylene with the N/Pt(111) surface …”

Section: Resultssupporting

confidence: 90%

“…The formation of ammonia in this case is similar to what we recently reported for the reaction of acetylene with the N/Pt(111) surface. 5 RAIRS Results. Styrene on Pt(111).…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

“…These include the synthesis of HCN over Pt gauze catalysts 1 and removal of nitrogen from petroleum feedstocks by hydrodenitrogenation using principally catalysts based on the oxides of Mo, Co, and Ni. 2 We have studied several cases of C−N coupling reactions on Pt(111) that lead to the desorption of HCN, including the reactions of adsorbed N with C atoms, 3 ethylene, 4 and acetylene 5 and through the reactions of C 2 with ammonia. 6 In other studies, we have generally found that the decomposition of molecules that already contain CN bonds leads predominantly to the desorption of HCN, indicating that once CN bonds are formed, they generally do not break on Pt(111).…”

Section: ■ Introductionmentioning

confidence: 99%

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Formation of Benzonitrile from the Reaction of Styrene with Nitrogen on the Pt(111) Surface

Yin

Krooswyk

et al. 2012

J. Phys. Chem. C

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Temperature-programmed reaction spectroscopy (TPRS) and reflection absorption infrared spectroscopy (RAIRS) were used to investigate the adsorption and reaction chemistry of styrene with clean and nitrogen covered Pt(111). The RAIR spectra indicate that the adsorption geometry of styrene is altered by both coverage effects and by the presence of nitrogen atoms on the surface. For an annealed monolayer of styrene on the clean Pt(111) surface, the most intense peaks correspond to out-of-plane bending vibrations indicating that the molecular plane is oriented parallel to the surface. For monolayer styrene on the nitrogen-precovered surface and for an unannealed monolayer of styrene, the in-plane and out-of-plane vibrations have comparable intensities indicating a more random orientation of the molecular plane. Upon heating, styrene reacts with the coadsorbed nitrogen atoms to form benzonitrile, which desorbs at 380 K. When benzonitrile is directly adsorbed on the Pt(111) surface, TPRS and RAIRS reveal that it desorbs at 350 K, indicating that its desorption at 380 K when formed from the reaction of styrene with nitrogen is reaction limited.

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Section: Resultssupporting

confidence: 90%

“…The formation of ammonia in this case is similar to what we recently reported for the reaction of acetylene with the N/Pt(111) surface. 5 RAIRS Results. Styrene on Pt(111).…”

Section: ■ Experimental Sectionmentioning

confidence: 99%