Peoples’ Friendship University of Russia (Moscow, Russia):

A. G. Cherednichenko, Dr. Chem., Prof., Head of Dept. of Physical and Colloid Chemistry, e-mail: cherednichenko-ag@rudn.ru
E. B. Markova, Cand. Eng., Associate Prof., Dept. of Physical and Colloid Chemistry, e-mail: ebmarkova@gmail.com
I. G. Bratchikova, Cand. Eng., Associate Prof., Dept. of Physical and Colloid Chemistry
N. Yu. Isaeva, Cand. Eng., Associate Prof., Dept. of Physical and Colloid Chemistry

Composite catalysts containing various forms of metallic or oxide iron ((Fe0 or Fe_xO_y, Fe³⁺) in combination with an inert matrix (γ-Al₂O₃) were obtained and their catalytic ability in the propane cracking reaction was studied. It is shown that for pure aluminum oxide, no catalytic effect is observed in this reaction. The synthesis methods implemented in this work allowed us to obtain various catalytic centers that can effectively carry out electron transfer by changing the degree of iron oxidation during the transformation of the initial substances into the target reaction products. It is proved that the use of iron nano-particles for formation of catalytic centers does not lead to a noticeable improvement in the technological yield of propylene compared to the Fe³⁺/Al₂O₃ material. Use of an inert oxide substrate (γ-Al₂O₃) and various iron compounds makes it possible to create a bifunctional catalytic center containing Fe(III) and Al(III) ions, which provides an energetically favorable interaction with the propane molecule and further breaking of the strongest C-H bond at a primary carbon atom. The synthesized catalytic systems can be used for thermocatalytic processes in natural gas processing instead of catalysts based on noble metals.

This publication has been supported by the RUDN University Scientific Projects Grant System, project № 021521-2-174.

1. Lebedev N. N. Chemistry and technology of organic and petrochemical synthesis. Moscow : Khimiya. 1988. 592 p.
2. Mamedov Z. A., Semenov I. P., Absattarov A. I. Experience in processing C₂ and C₃ fractions from catalytic cracking units at an ethylene and propylene production unit. Khimicheskaya tekhnika. 2017. No. 11. pp. 32-39.
3. Khadzhiev S. N. Nanoheterogeneous catalysis: definition, state, and research prospects (review). Petroleum Chemistry. 2016. Vol. 56. No. 6. pp. 465–479. DOI: 10.1134/S0965544116060050.
4. Fakhroleslam M. Sadrameli S. M. Thermal/catalytic cracking of hydrocarbons for the production of olefins; a state-of-the-art review III: Process modeling and simulation. Fuel. 2019. Vol. 252. pp. 553–566. DOI: 10.1016/j.fuel.2019.04.127.
5. Bayramgulova R. I., Trapeznikova E. F. Catalysts for the dehydrogenation of light alkanes. Neftegazovoe delo. 2019. No. 4. pp. 173.
6. Gilmutdinov A. T., Khisamova L. Z. Review of modern catalysts used in catalytic cracking processes. Voprosy nauki i obrazovaniya. Seriya “Khimicheskie tekhnologii”. 2019. No. 5 (50). pp. 10-15. DOI: 10.24411/2545-0.81X-2019-10502.
7. Z.-P. Hu, D. Yang, Z. Wang, Z.-Y. Yuan. State-of-the-art catalysts for direct dehydrogenation of propane to propylene. Chinese Journal of Catalysis. 2019. Vol. 40. No. 9. pp.1233-1254. DOI: 10.1016/S1872-2067(19)63360-7.
8. Yanan Sun, Yimin Wu, Lei Tao, Honghong Shan, Chunyi Li. Effect of pre-reduction on the performance of Fe2O3/Al2O3 catalysts in dehydrogenation of propane. Journal of Molecular Catalysis A: Chemical. 2015. Vol. 397. pp. 120-126. DOI: 10.1016/j.molcata.2014.11.011.
9. Kang Min Kim, Byeong Sub Kwak, No-Kuk Park, Tae Jin Lee, Misook Kang. Effective hydrogen production from propane steam reforming over bimetallic co-doped NiFe/Al₂O₃ catalyst. Journal of Industrial and Engineering Chemistry. 2017. Vol. 4625. pp. 324-336. DOI: 10.1016/j.jiec.2016.10.046.
10. Cherednichenko A. G., Markova E. B., Sheshko T. F., Morozova E. A. Thermal-catalytic destruction of polyolephin polymers in presence of LnVO₃ and LnVO₄. Catalysis Today. 2021. Vol. 379. pp. 80–86. DOI: 10.1016/j.cattod.2021.03.012.
11. Revina A. A. The preparation of nanosized metal particles and methods for its preparation. Patent RF №. 2312741. Bull. 35. Introduced: 20.12.2007.
12. Revina A. A., Markova E. B., Suvorova O. V., Tereshina T. A., Cherednichenko A. G. Effect of Doping of Plant Raw-Based Activated Carbons with Iron Nanoparticles on Their Catalytic Activity in the Reaction of Propane Dehydrogenation. Petroleum Chemistry. 2020. Vol. 60. No. 5. pp. 585–591. DOI: 10.1134/s0965544120050096.
13. Anderson R. Experimental methods for the study of catalysis. Moscow : Mir. 1972. 480 p.
14. Markova E. B., Lyadov A. S., Kurilkin V. V. Features of Propane Conversion in the Presence of SmVO₃ and SmVO₄. Russian Journal of Physical Chemistry A. 2016. Vol. 90. No. 9. pp. 1754–1759. DOI: 10.1134/S0036024416090193.
15. Fakhroleslam M. Sadrameli S.M. Thermal/catalytic cracking of hydrocarbons for the production of olefins; a state-of-the-art review III: Process modeling and simulation. Fuel. 2019. Vol. 252. pp. 553–566. DOI: 10.1016/j.fuel.2019.04.127.