Kinetic Model of the Temperature-Programmed Desorption of Ammonia to Study the Acidity of Heterogeneous Catalysts | Sciact - CRIS-система Института катализа

Kinetic Model of the Temperature-Programmed Desorption of Ammonia to Study the Acidity of Heterogeneous Catalysts Научная публикация

Журнал

Russian Journal of Physical Chemistry A
ISSN: 0036-0244 , E-ISSN: 1531-863X

Вых. Данные

Год: 2024, Том: 98, Номер: 13, Страницы: 3030–3043 Страниц : 14 DOI: 10.1134/S0036024424702297

Ключевые слова

temperature-programmed desorption, kinetics, ammonia, acidity, heterogeneous catalysts, alumina, silicalite-1, titanium silicalite-1

Авторы

Lysikov A.I. ^1,2 , Vdovichenko V.A. ^1,2 , Vorob’eva E.E. ^1,2 , Shamanaeva I.A. ^1,2 , Luzina E.V. ^1,2 , Piryutko L.V. ¹ , Veselovskaya Zh.V. ^1,2 , Parkhomchuk E.V. ^1,2

Организации

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

Информация о финансировании (2)

1	Министерство науки и высшего образования Российской Федерации (с 15 мая 2018)	FWUR-2024-0036
2	Правительство Новосибирской области	гр-10 от 18.09.2023

A new method for processing the results of the temperature-programmed desorption (TPD) of ammonia from heterogeneous catalyst surfaces and an approach for automatic deconvolution of TPD kinetic curves were proposed. This method uses the Polanyi–Wigner kinetic model with formal kinetics approaches for simple reactions, which imposes restrictions on the observed first, second, or third orders. The parameters of the TPD curves were selected based on the inverse simulation using the Runge–Kutta method and fitting them to experimental points using dynamic model parameter changes. As an example, several heterogeneous catalysts were presented in this work. TPD-NH3 of titanium silicalite-1 and silicalite-1 was obtained using one third-order desorption kinetic equation. TPD-NH3 of three γ-alumina samples was obtained using two desorption peaks with similar kinetic parameters.

Lysikov A.I. , Vdovichenko V.A. , Vorob’eva E.E. , Shamanaeva I.A. , Luzina E.V. , Piryutko L.V. , Veselovskaya Z.V. , Parkhomchuk E.V.
Kinetic Model of the Temperature-Programmed Desorption of Ammonia to Study the Acidity of Heterogeneous Catalysts
Russian Journal of Physical Chemistry A. 2024. V.98. N13. P.3030–3043. DOI: 10.1134/S0036024424702297

Поступила в редакцию:	4 февр. 2024 г.
Принята к публикации:	17 июл. 2024 г.

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