NaWMn/SiO2 Mixed Oxide Catalyst: Thermochemistry of Lattice Oxygen Тезисы доклада
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EuropaCat-XIII: 13th European Congress on Catalysis 27-31 авг. 2017 , Florence |
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| Сборник | 13th European Congress on Catalysis Сборник, 2017. |
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| Вых. Данные | Год: 2017, Номер статьи : P1.259, Страниц : 2 | ||||
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Реферат:
The in-situ differential scanning calorimetry (DSC) was employed to determine quantitative characteristics of active lattice oxygen in NaWMn/SiO2 mixed oxide catalyst. The amount of 'weakly-bonded' oxygen (~56 mmole/g) and its binding energy with oxide lattice (~340 kJ/mole) were determined by re-oxidation of the sample after preliminary oxygen desorption. The obtained values indicate that this type of oxygen adsorption/removal is associated with Mn(4+) <=> Mn(3+) transition. The amount of 'strongly-bonded' oxygen (~443 mmole/g) and its binding energy (~420 kJ/mole) were determined by re-oxidation of the sample pre-reduced in hydrogen. They suggest that this form of active oxygen can be associated with tungsten present in the sample.
Библиографическая ссылка:
Lomonosov V.I.
, Gordienko Y.A.
, Fattakhova Z.T.
, Sinev M.Y.
, Rogov V.A.
, Sadykov V.A.
NaWMn/SiO2 Mixed Oxide Catalyst: Thermochemistry of Lattice Oxygen
В сборнике 13th European Congress on Catalysis. 2017.
NaWMn/SiO2 Mixed Oxide Catalyst: Thermochemistry of Lattice Oxygen
В сборнике 13th European Congress on Catalysis. 2017.
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