Studying the Stage of Nitric Oxide Desorption from the Surfaces of CuO/γ-Al2O3 Catalysts, with or without a Reducing Agent | Sciact - CRIS-система Института катализа

Studying the Stage of Nitric Oxide Desorption from the Surfaces of CuO/γ-Al2O3 Catalysts, with or without a Reducing Agent Научная публикация

Журнал

Catalysis in Industry
ISSN: 2070-0504 , E-ISSN: 2070-0555

Вых. Данные

Год: 2020, Том: 12, Номер: 3, Страницы: 255-264 Страниц : 10 DOI: 10.1134/S2070050420030046

Ключевые слова

nitrogen oxides, selective catalytic reduction, desorption, catalyst, absorption–reduction mode

Авторы

Dubinin Yu.V. ¹ , Tsereshko N.A. ¹ , Yakovlev V.A. ¹

Организации

1	Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia

Информация о финансировании (1)

Федеральное агентство научных организаций России

0303-2016-0012 (V.47.1.4.)

Nitric oxide desorption from the surfaces of supported copper-containing catalysts (CuO/γ-Al2O3) as a function of temperature is studied. NO preadsorption occurs both in an inert medium of argon and in the presence of oxygen. It is shown that the presence of oxygen considerably raises the capacity of the samples with respect to NO, due to the activation of a supplementary redox mechanism. In addition, the maximum desorption temperature shifts to the region of higher temperatures. For a sample exhibiting the highest capacity with respect to NO, the desorption process is conducted using hydrogen and propane as reducing agents. Desorption with hydrogen leads to the reduction of adsorbed species at temperatures of 160–190°C. With propane, NOx desorption proceeds mostly due to the thermal degradation of adsorbed nitrogen species to NO in the temperature range of 180–250°C, as in an inert atmosphere. The contribution from reduction due to the presence of propane manifests at temperatures of 260–300°C.

Dubinin Y.V. , Tsereshko N.A. , Yakovlev V.A.
Studying the Stage of Nitric Oxide Desorption from the Surfaces of CuO/γ-Al2O3 Catalysts, with or without a Reducing Agent
Catalysis in Industry. 2020. V.12. N3. P.255-264. DOI: 10.1134/S2070050420030046 WOS Scopus РИНЦ OpenAlex

Дубинин Ю.В. , Церешко Н.А. , Яковлев В.А.
Исследование стадии десорбции NO с поверхности CuO/γ-Al2O3 катализаторов, в том числе в присутствии восстановителя
Катализ в промышленности. 2020. Т.20. №2. С.116-126. DOI: 10.18412/1816-0387-2020-2-116-126RSCI РИНЦ CAPlus OpenAlex

Поступила в редакцию:	19 нояб. 2019 г.
Принята к публикации:	20 янв. 2020 г.
Опубликована в печати:	1 июл. 2020 г.
Опубликована online:	28 сент. 2020 г.

Web of science:	WOS:000573258100010
Scopus:	2-s2.0-85091652850
РИНЦ:	45302719
OpenAlex:	W3090948442

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