Catalytic Oxidation of CO with N₂O on Gas‐Phase Platinum Clusters

Abstract

The complete catalytic cycle of CO oxidation with N2O is shown to occur on Ptn+ (see scheme); for Pt7+ it involves six different elementary reactions. Poisoning of the catalyst by sequential addition of CO is observed. The extent of poisoning can be adjusted with the ratio of N2O and CO partial pressures.

Catalytic Redox Reactions in the CO/N2O System Mediated by the Bimetallic Oxide‐Cluster Couple AlVO3+/AlVO4+

“…Furthermore, cationic Pt x + (x = 6-8) [6] as well as anionic clusters Pt x À (x = 3-6) [4g,h, 7] permit efficient catalytic cycles. The energetic requirement for this kind of O-atom transport is defined by the O-atom affinities (OAs) of the three species given in Equations (2) and (3), that must fulfill the requirement given in Equation (4).…”

Communication: CO oxidation by silver and gold cluster cations: Identification of different active oxygen species

“…Nothing is known so far concerning the reactions of gas-phase gold and silver clusters, although N 2 O was employed to oxidize other transition metal clusters. 7 In a very recent communication, Hamilton et al reported evidence of infrared driven surface chemistry of N 2 O on Rh + n clusters. 8 The adsorption of CO on pure gold [9][10][11][12] and silver [10][11][12] cluster cations and anions was investigated previously, revealing size specific CO saturations and the strongest binding energies of CO to positively charged gold clusters.…”

Ion–molecule reactions of CoAr6+ with nitrogen oxides N2O, NO, and NO2: measuring absolute pressure by shock-freezing of the collision complex

“…Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) is a well suited tool to investigate bimolecular cluster ion-molecule reactions [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. In order to determine absolute rate constants one should know the absolute pressure in the ICR-cell accurately, because the pressure is the main uncertainty.…”