Mathematic modelling of the peculiarities of NO decomposition on Rh(111)

Geometrical Structures of Partially Oxidized Rhodium Cluster Cations, Rh6Om+ (m = 4, 5, 6), Revealed by Infrared Multiple Photon Dissociation Spectroscopy

“…[1][2][3][4][5] The mechanism of NO reduction by Rh has been studied for many years using gas-phase clusters. Their use is advantageous for understanding the behavior of N and O atoms at the atomic and molecular level, since the number of Rh, N, and O atoms involved in the reaction is well defined.…”

Adsorption Behavior and Reaction Properties of NO and CO on Ir(111) and Rh(111)

“…In the TPD spectra for 15 NO and 15 N 2 after saturation of the surface with NO at 263 K ( Fig. 2), we did not observe any desorption peaks for N 2 O and O 2 on the Ir(111) surface, which indicates that atomic oxygen dissociated from NO remained on the surface at temperatures below 900 K. Two desorption peaks for 15 NO were observed, at 393 and 455 K. In light of the XPS and electron energy loss spectroscopy results [47], which indicate that only atop-NO species existed on the Ir surface after annealing to 373 K, we assigned the peaks at 393 and 455 K to desorption of 15 NO adsorbed on hollow and atop sites, respectively. Simultaneously with 15 NO desorption, the 15 N 2 desorption peaks were observed at 471 and 574 K.…”

“…In the IRA spectra of adsorbed NO on Ir(111) exposed to 15 NO gas at 0.2-45 L at 263 K ( Fig. 1), the peaks due to NO adsorbed on hollow and atop sites were observed at 1,400-1,444 and 1,799-1,820 cm -1 , respectively.…”

“…Adsorption experiments were carried out with 15 NO (99.9% pure) and CO (99.999% pure) at (5 9 10 -9 ) to (5 9 10 -8 ) Torr (0-60 L; 1 L = 10 -6 Torr s) and a sample temperature of 263-273 K. 15 NO gas was used to distinguish between N 2 and CO desorption peaks and between N 2 O and CO 2 desorption peaks during TPD.…”

“…For the NO reactivity on the Rh single crystal, the adsorption, dissociation and desorption properties have been extensively examined using various crystal planes such as (111) [11][12][13][14][15][16], (100) [17][18][19][20][21], (110) [22][23][24][25][26], and stepped [19,[27][28][29] surfaces. The adsorbed NO on the Rh surface dissociates completely upon heating at low NO coverage, whereas the dissociation percentage decreases with increasing NO coverage.…”