Реферат: High-loaded nickel catalysts (HLNC) modified with Sn were synthesized and tested in dehydrogenation of methylcyclohexane (MCH) as a liquid organic hydrogen carrier. The catalyst composition and its reduction temperature were optimized that enabled to achieve the dehydrogenation selectivity of 99.0 % at a MCH conversion of 92 % and WHSV of 6.0 h−1, while the 99.9 % selectivity was reached at the conversion of 60.4 %, and WHSV of 18.5 h−1. Further, stability of the high selectivity of Sn-modified HLNC was demonstrated in the long-run (100 h) catalyst test. The genesis of the HLNC during their modification with Sn and reductive activation in hydrogen was studied. It was shown that the activation at temperatures above 450 °C resulted in a uniform distribution of Sn with the predominant formation of solid NiSn solutions having a crystal lattice of metallic nickel. The formation of the solid solutions provided a decrease in the adsorptive properties relating to the reaction product, toluene, which, in turn, led to an increase in the selectivity of MCH dehydrogenation.

Библиографическая ссылка: Koskin A.P. , Stepanenko S.A. , Alekseeva (Bykova) M.V. , Bulavchenko O.A. , Gerasimov E.Y. , Lysikov A.I. , Yeletsky P.M. , Kaichev V.V. , Yakovlev V.A.
The Origin of Extraordinary Selectivity in Dehydrogenation of Methylcyclohexane over Ni-Sn-Based Catalysts
Chemical Engineering Journal. 2023. V.476. 146629 :1-13. DOI: 10.1016/j.cej.2023.146629 WOS Scopus РИНЦ CAPlus OpenAlex

Даты:

Поступила в редакцию:	6 июн. 2023 г.
Принята к публикации:	10 окт. 2023 г.
Опубликована online:	11 окт. 2023 г.
Опубликована в печати:	15 нояб. 2023 г.

Идентификаторы БД:

Web of science:	WOS:001096507900001
Scopus:	2-s2.0-85174006111
РИНЦ:	55292324
Chemical Abstracts:	2023:2142729
OpenAlex:	W4387524313

Цитирование в БД:

БД	Цитирований
OpenAlex	3
Scopus	8
Web of science	7
РИНЦ	1

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