Study on the modifying effect of cobalt in Pd-Co/α-Al2O3 catalysts for ethylene production by acetylene hydrogenation

Study on the modifying effect of cobalt in Pd-Co/α-Al2O3 catalysts for ethylene production by acetylene hydrogenation Научная публикация

Журнал

Chemical Engineering Journal
ISSN: 1385-8947

Вых. Данные

Год: 2025, Том: 516, Номер статьи : 164020, Страниц : 15 DOI: 10.1016/j.cej.2025.164020

Ключевые слова

Pd-Co nanoalloy, Bimetallic catalyst, Acetylene hydrogenation, Ethylene production

Авторы

Yurpalova Daria V. ¹ , Vinokurov Zakhar S. ² , Prosvirin Igor P. ³ , Panafidin Maxim A. ³ , Bukhtiyarov Andrey V. ³ , Trenikhin Mikhail V. ¹ , Gerasimov Evgeny Yu. ³ , Gulyaeva Tatyana I. ¹ , Temerev Victor L. ¹ , Kovtunova Larisa M. ³ , Yurpalov Vyacheslav L. ¹

Организации

1	Center of New Chemical Technologies BIC, Boreskov Institute of Catalysis
2	Synchrotron Radiation Facility SKIF, Boreskov Institute of Catalysis
3	Boreskov Institute of Catalysis

Информация о финансировании (1)

Министерство науки и высшего образования Российской Федерации

FWUR-2024-0039

The modifying effect of cobalt on palladium in novel bimetallic Pd-Co catalysts supported on α-alumina was studied, and the catalytic properties of Pd-Co/α-Al2O3 samples in the direct selective hydrogenation of acetylene to ethylene were carefully investigated. It was shown that the temperature of catalyst treatment in hydrogen and the Pd/Co ratio are effective tools for varying nanoparticles composition of the Pd(1-x)Cox solid solution formed in the catalysts. Increasing the reduction temperature and decreasing the Pd/Co molar ratio leads to a gradual increase in the Co content in the Pd(1-x)Cox particles, which provides a slight decrease in activity, but an improvement in ethylene selectivity and the yield of the target product. Using XRD, XPS, HR TEM, TPD-C2H4 and TPR-H2 it was found that an increase in the cobalt concentration in Pd(1-x)Cox nanoparticles suppresses the ability of the active component to activate hydrogen, enhances the electron interaction between Pd and Co and ensures rapid desorption of ethylene from the catalyst surface. The highest selectivity was demonstrated on supported Pd(1-x)Cox nanoparticles with the value of x > 0.4. It was also established that Pd-Co/α-Al2O3 samples with Pd:Co = 1:3 and 1:4 reduced in H2 at 700 ◦C provide a high and stable ethylene yield at a level of 68 % due to the enhanced influence of cobalt on the electronic and geometric properties of palladium in Co-rich PdCo nanoparticles.

Yurpalova D.V. , Vinokurov Z.S. , Prosvirin I.P. , Panafidin M.A. , Bukhtiyarov A.V. , Trenikhin M.V. , Gerasimov E.Y. , Gulyaeva T.I. , Temerev V.L. , Kovtunova L.M. , Yurpalov V.L.
Study on the modifying effect of cobalt in Pd-Co/α-Al2O3 catalysts for ethylene production by acetylene hydrogenation
Chemical Engineering Journal. 2025. V.516. 164020 :1-15. DOI: 10.1016/j.cej.2025.164020 OpenAlex

Поступила в редакцию:	29 янв. 2025 г.
Принята к публикации:	20 мая 2025 г.
Опубликована online:	22 мая 2025 г.

OpenAlex:

W4410611396

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