Decomposition of ozone on a silver catalyst

Imamura, Seiichiro; Ikebata, Masaaki; Ito, Tairo; Ogita, Takashi

doi:10.1021/ie00049a033

Cited by 141 publications

(57 citation statements)

References 7 publications

(10 reference statements)

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“…Supported silver and containing silver catalysts have a high activity for ozone decomposition [25], but Ag catalyst has low stability under severe reaction conditions. Au catalyst is similar to Ag catalyst in activation mechanism [24], and has superior catalytic performance to Ag catalyst, such as resistance to moisture.…”

Section: Supported Gold Catalystsmentioning

confidence: 99%

“…Only one investigation [25] of the mechanism of ozone decomposition suggested that the mechanism probably involved a superoxide(O 2 − ) species. In fact, it is difficult to study the surface active oxygen species in decomposition of ozone, because of ozones co-occurance with oxygen from ozone generator, and because both of them have paramagnetic signals in EPR detections.…”

Section: Structure Characterisations and O 2 -Tpd Studymentioning

confidence: 99%

See 1 more Smart Citation

Supported gold catalysts used for ozone decomposition and simultaneous elimination of ozone and carbon monoxide at ambient temperature

Hao

Cheng²,

Guo³

et al. 2001

Applied Catalysis B: Environmental

143

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Section: Supported Gold Catalystsmentioning

confidence: 99%

Section: Structure Characterisations and O 2 -Tpd Studymentioning

confidence: 99%

Supported gold catalysts used for ozone decomposition and simultaneous elimination of ozone and carbon monoxide at ambient temperature

Hao

Cheng²,

Guo³

et al. 2001

Applied Catalysis B: Environmental

143

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“…The plasma technology in the form of a DBD coupled to a catalyst enables high oxidation efficiency and the in situ regeneration of the catalyst's surface by (i) mineralizing the adsorbed VOCs, and (ii) restoring the oxidation surface state. The coupling of plasma with the catalyst also enables a better control of the surface oxidation state by increasing the oxidation rate and eliminating by-product poisoning at lower energy cost [13][14][15][16]. The combination of NTP with a catalyst can be either single stage, with the catalyst inserted directly inside the discharge zone, or two-stage, with the catalyst placed downstream the NTP reactor [11,17,18].…”

Section: Introductionmentioning

confidence: 99%

Oxidation of isopropanol and acetone adsorbed on TiO2 under plasma generated ozone flow: Gas phase and adsorbed species monitoring

Barakat¹,

Gravejat²,

Guaitella³

et al. 2014

Applied Catalysis B: Environmental

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“…Silver alone is extensively used in heterogeneous catalysis and high performance materials science. Catalysts containing silver oxide are efficient for decomposition of ozone [6,7] *Correspoding author: dijana_jelic@hotmail.com and halo-organic compounds [8]. The catalysts for carbon monoxide and numerous other volatile organic compounds (VOCs) oxidation based on Ag 2 O are also well known [9].…”

Section: Introductionmentioning

confidence: 99%

A Thermogravimetric Study of Reduction of Silver Oxide Under Non-Isothermal Conditions

Jelić¹,

Mentus²,

Penavin-Škundrić³

et al. 2010

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Thermal decomposition of a commercial powder of silver oxide (Ag 2 O, Merck, p.a.), with the mean particle diameter of 740 nm has been investigated under nonisothermal conditions in a reducing atmosphere of 25% H 2 in argon. The process was conducted and controlled in a simultaneous TG/DTA analyzer, at heating rates of 2, 10 and 20 °C min -1 . The residual mass was always around 93,2 % of the initial one, regardless of the heating rate, which, according to the oxide stoichiometry, corresponds to metallic silver as final product. The SEM microphotography indicated no significant change in particle size and morphology during reduction. The thermogravimetric data was used for kinetic analysis of reduction. Using Kissinger plot, the initial value of the activation energy was estimated to amount to 6.17 · 10 4 J mol -1 . The initial values for kinetics parameters were further calculated using different methods of kinetic analysis. Both activation energy (E) as a function of conversion degree (α), and pre-exponential factor (A) were calculated by either the Friedman (Ea = 5,38 · 10 4 J mol -1 , A = 1,49 · 10 6 s -1 ) or multi-heating rate CoastRedfern (Ea = 5,97 · 10 4 J mol -1 , A = 3,90 · 10 5 s -1 ) isoconversional methods. A rather complex dependence of activation energy on the conversion degree was observed. A more complete approach to determine the kinetic parameters was done by means of nonlinear regression analysis (Ea = 6,00 · 10 4 J mol -1 , A = 2,41 · 10 6 s -1 , n = 0,466 ).

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Decomposition of ozone on a silver catalyst

Cited by 141 publications

References 7 publications

Supported gold catalysts used for ozone decomposition and simultaneous elimination of ozone and carbon monoxide at ambient temperature

Supported gold catalysts used for ozone decomposition and simultaneous elimination of ozone and carbon monoxide at ambient temperature

Oxidation of isopropanol and acetone adsorbed on TiO2 under plasma generated ozone flow: Gas phase and adsorbed species monitoring

A Thermogravimetric Study of Reduction of Silver Oxide Under Non-Isothermal Conditions

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