Impact of Composition and Structural Parameters on the Catalytic Activity of MFI Type Titanosilicalites | Sciact - CRIS-система Института катализа

Impact of Composition and Structural Parameters on the Catalytic Activity of MFI Type Titanosilicalites Научная публикация

Журнал

Dalton Transactions
ISSN: 1477-9226 , E-ISSN: 1477-9234

Вых. Данные

Год: 2022, Том: 51, Номер: 9, Страницы: 3439-3451 Страниц : 13 DOI: 10.1039/d1dt04131b

Ключевые слова

C (programming language); Catalyst activity; Chlorine compounds; Fourier transform infrared spectroscopy; Ions; Nitrogen oxides; Nuclear magnetic resonance spectroscopy; Propane; Selective catalytic reduction; Silicates; Temperature programmed desorption; Titanium; X ray absorption spectroscopy; X ray powder diffraction

Авторы

Kuz'micheva Galina ¹ , Chernyshev Vladimir ^2,3 , Kravchenko Galina ¹ , Pirutko Larisa ⁴ , Khramov Evgeny ⁵ , Bruk Lev ¹ , Pastukhova Zhanna ¹ , Kustov Aleksander ^2,6 , Kustov Leonid ^2,6 , Markova Ekaterina ⁷

Организации

1	MIREA-Russian Technological University, Moscow, 119454, Russia
2	Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow, 119991, Russia
3	Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow, 119071, Russia
4	Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia
5	National Research Center “Kurchatov Institute“, Moscow, 123182, Russia
6	N.D. Zelinsky Institute of Organic Chemistry, Moscow, 119991, Russia
7	Peoples Friendship University of Russia RUDN University, Moscow, 117198, Russia

Информация о финансировании (2)

1	Министерство науки и высшего образования Российской Федерации (с 15 мая 2018)	0706-2020-0026
2	Министерство науки и высшего образования Российской Федерации (с 15 мая 2018)	0239-2021-0006

Titanosilicalite of the MFI type was obtained via a hydrothermal method. Its initial and annealed at 75 °C (TS-1P(75)) and 500 °C (TS-1P(500)) forms were studied by X-ray powder diffraction (PXRD), X-ray absorption spectroscopy (XAS-method), Fourier-transform infrared (FT-IR) spectroscopy, differential scanning calorimetry (DSC), temperature-programmed ammonia desorption (TPD NH3), and pyridine adsorption (Py). The full-profile Rietveld method allowed us to observe the presence of the organic template tetrapropylammonium hydroxide (TPAOH) in the framework voids, as well as to determine the silicate module (Si/Ti = 73.5) and the distribution of Ti4+ ions over the MFI-type structure sites (Ti atoms replace Si ones in two positions: T1 and T6). The coordination numbers of titanium (CNTi = 4.6 for TS-1P and TS-1P(75), CNTi = 3.8 for TS-1P(500)) were established by the XAS-method. The catalytic activity of titanosilicalites was found in the reactions of nitrous oxide decomposition (the maximal decomposition rate is demonstrated for the TS-1P(75) sample), allyl chloride epoxidation to epichlorohydrin (the best combination of all indicators was exhibited for the TS-1P sample) and propane conversion (maximum propane conversion, and butadiene and propylene selectivity were observed in both TS-1P(75) and TS-1P(500) samples). Mechanisms for the catalytic processes are proposed. The relationship between the catalytic properties and the composition (Si/Ti), Ti4+ ion distribution over the MFI-type structure sites, the local environment of titanium ions, and the number of acid sites in the titanosilicalites are discussed.

Kuz'micheva G. , Chernyshev V. , Kravchenko G. , Pirutko L. , Khramov E. , Bruk L. , Pastukhova Z. , Kustov A. , Kustov L. , Markova E.
Impact of Composition and Structural Parameters on the Catalytic Activity of MFI Type Titanosilicalites
Dalton Transactions. 2022. V.51. N9. P.3439-3451. DOI: 10.1039/d1dt04131b WOS Scopus РИНЦ CAPlusCA PMID OpenAlex

Поступила в редакцию:	8 дек. 2021 г.
Принята к публикации:	28 янв. 2022 г.
Опубликована online:	31 янв. 2022 г.
Опубликована в печати:	7 мар. 2022 г.

Web of science:	WOS:000755248300001
Scopus:	2-s2.0-85125554652
РИНЦ:	48187070
Chemical Abstracts:	2022:373396
Chemical Abstracts (print):	179:17606
PMID (PubMed):	35167633
OpenAlex:	W4210621010

БД	Цитирований
Web of science	8
Scopus	9
РИНЦ	8
OpenAlex	11