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NaWMn/SiO2 Mixed Oxide Catalyst: Thermochemistry of Lattice Oxygen Доклады на конференциях

Язык Английский
Тип доклада Стендовый
Конференция EuropaCat-XIII: 13th European Congress on Catalysis
27-31 авг. 2017 , Florence
Авторы Lomonosov V.I. 1 , Gordienko Yu.A. 1 , Fattakhova Z.T. 1 , Sinev M.Yu. 1 , Rogov V.A. 2 , Sadykov V.A. 2
Организации
1 Федеральный исследовательский центр химической физики им. Н.Н. Семенова Российской академии наук
2 Новосибирский национальный исследовательский государственный университет

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
EuropaCat-XIII: 13th European Congress on Catalysis 27-31 Aug 2017