On the possibility of AgZSM-5 zeolite being a partial oxidation catalyst for methane

Soot oxidation performance with a HZSM-5 supported Ag nanoparticles catalyst and the characterization of Ag species

“…The spectra of Ag 2 O and metal Ag foil are also indicated as reference. The feature of Ag/HZSM-5 spectrum shows the different behavior from that of Ag + and metallic Ag, but a similar one was observed by Kuroda's group for ion-exchanged Ag/HZSM-5 when being measured at 200-300 C. 51 This spectra suggests that the Ag species probably compose of ZO À Ag + and Ag metal clusters. In M-TC, the XANES spectrum is identical to that of Ag foil.…”

“…This temperature coincides with the observation by Khan et al, where oxidized Ag starts to dehydrate and crystallize into metallic Ag. [49][50][51] Fig . 3(a) shows the SEM image of the as-prepared Ag/HZSM-5 catalyst.…”

Oxygen Isotope (18O2) Evidence on the Role of Oxygen in the Plasma-Driven Catalysis of VOC Oxidation

“…It has been well-known that active metals are capable of adsorbing oxygen on their surface. Oxygen adsorption on silver has also been the object of intensive study because of its peculiar activity toward ethylene partial oxidation to ethylene oxide [30,31]. For example, Busser et al studied the temperature-programmed desorption (TPD) of O 2 from Ag/Al 2 O 3 catalyst in a microreactor [32].…”

Bimetallic AgFe Systems on Mordenite: Effect of Cation Deposition Order in the NO Reduction with C3H6/CO

“…The AgMOR monometallic catalysts at both temperatures presented low-temperature activity (~125 • C), which is attributed to the presence of Ag + ions catalyzing a mild oxidation process, since the propene is not yet activated [36]. By increasing the temperature to 350-520 • C a further increase in conversion is observed which is attributed to silver in reduced state (Ag + → Ag m n+ → Ag m → Ag 0 NPs) [65][66][67][68]. Such reduced species of silver were generated during the ionic exchange according to UV-Vis spectra (Figure 1a,b).…”