Kinetics of n-hexane hydroisomerization over HZSM-5 supported platinum catalysts. Features of the process mechanism and the Ni-promoting effect Научная публикация
| Журнал |
Molecular Catalysis
ISSN: 2468-8231 , E-ISSN: 2468-8274 |
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| Вых. Данные | Год: 2021, Том: 515, Номер статьи : 111880, Страниц : DOI: 10.1016/j.mcat.2021.111880 | ||||||
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Реферат:
Kinetic studies of the hydroisomerization of n-hexane under stationary and non-stationary conditions for Pt/HZSM-5 catalysts promoted and non-promoted with nickel have been carried out. The catalysts were studied by the low-temperature N2 adsorption-desorption, X-ray diffraction, transmission electron microscopy, TPR-H2, and TPD-NH3 methods. It is found that the kinetic equation of n-hexane isomerization on both catalysts is written by a common fractional-rational equation, in which the hydrogen exhibits a positive effect on the reaction rate. However, the values of the kinetic constants of the reaction on the two catalysts differ, showing the influence of the Ni additive on the catalyst properties and the reaction kinetics. The introduction of Ni into Pt/HZSM was accompanied by a decrease in the particle size of the active phase, an increase in the concentration of adsorbed hydrogen, which significantly increased the rate of hydroisomerization. In addition, the distinctive characteristics of the kinetic model of the reaction on the Pt-based and the Pd-based catalyst were elucidated.
Библиографическая ссылка:
Loc L.C.
, Gaidai N.A.
, Tri N.
, Thoa D.T.K.
, Kogan V.M.
, Cuong H.T.
, Agafonov Y.A.
Kinetics of n-hexane hydroisomerization over HZSM-5 supported platinum catalysts. Features of the process mechanism and the Ni-promoting effect
Molecular Catalysis. 2021. V.515. 111880 . DOI: 10.1016/j.mcat.2021.111880 WOS Scopus OpenAlex
Kinetics of n-hexane hydroisomerization over HZSM-5 supported platinum catalysts. Features of the process mechanism and the Ni-promoting effect
Molecular Catalysis. 2021. V.515. 111880 . DOI: 10.1016/j.mcat.2021.111880 WOS Scopus OpenAlex
Идентификаторы БД:
| Web of science: | WOS:000704082400006 |
| Scopus: | 2-s2.0-85116433647 |
| OpenAlex: | W3200492056 |