Structural Kinetic Model and Mechanism of Methylcyclohexane Dehydrogenation over Pt,Sn/γ-Al2O3 Catalyst

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Abstract

The kinetic regularities of methylcyclohexane dehydrogenation into toluene and hydrogen on the supported Pt,Sn/γ-Al2O3 catalyst in the gas phase have been studied in detail. Based on the results of kinetic experiments, using the advancement and discrimination of hypotheses, an adequate structural kinetic model of the reversible process has been created. It is based on a mechanism that includes four routes involving the bifunctional active center of the catalyst and its two adsorption complexes: with hydrogen and with toluene.

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About the authors

А. D. Lozhkin

MIREA – Russian Technological University; Hydrogen Technologies Center LLC

Author for correspondence.
Email: promchemie@gmail.com
Russian Federation, Moscow; Moscow

E. A. Katsman

MIREA – Russian Technological University

Email: promchemie@gmail.com
Russian Federation, Moscow

L. G. Bruk

MIREA – Russian Technological University

Email: lgbruk@mail.ru
Russian Federation, Moscow

References

  1. Okada Y., Sasaki E., Watanabe E., Hyodo S., Nishijima H. // Int. J. Hydrogen Energy. 2006. V. 31. P. 1348.
  2. Kustov L.M., Kalenchuk A.N., Bogdan V.I. // Russ. Chem. Rev. 2020. V. 89. № 9. Р. 897.
  3. Lozhkin A.D., Iskhakova L.D., Milovich F.O., Katsman E.A., Bruk L.G. // Kinet. Catal. 2024. V. 65. № 3. P. 280.
  4. Pande J., Shukla A., Biniwale R. // Int. J. Hydrogen Energy. 2012. V. 37. P. 6756.
  5. Kou Z., Zhi Z., Xu G., An Y., He C. Appl. Catal. A: Gen. 2013. V. 467. P. 196.
  6. Li J., Chai Y., Liu B., Wu Y., Li X., Tang Z., Liu Y., Liu C. // Appl. Catal. A: Gen. 2014. V. 469. P. 434.
  7. Ping H., Xu G., Wu S. // Int. J. Hydrogen Energy. 2015. V. 40. P. 15923.
  8. Kreuder H., Boeltken T., Cholewa M., Meier J., Pfeifer P. // Int. J. Hydrogen Energy. 2016. V. 41. P. 12082.
  9. Tuo Y., Shi L., Cheng H., Zhu Y., Yang M., Xu J., Han Y., Li P., Yuan W. // J. Catal. 2018. V. 360. P. 175.
  10. Boufaden N., Akkari R., Pawelec B., Fierro J.L.G., Said Zina M., Ghorbel A. // J. Mol. Catal. A: Chem. 2016. V. 420. P. 96.
  11. Xia K., Lang W., Li P., Yan X., Guo Y. // J. Catal. 2016. V. 338. P. 104.
  12. Xia Z., Lu H., Liu H., Zhang Z., Chen Y. // Catal. Commun. 2017. V. 90. P. 39.
  13. Nakano A., Manabe S., Higo T., Seki H., Nagatake S., Yabe T., Ogo S., Nagatsuka T., Sugiura Y., Iki H., Sekine Y. // Appl. Catal. A: Gen. 2017. V. 543. P. 75.
  14. Li B., Xu Z., Jing F., Luo S., Wang N., Chu W. // Appl. Catal. A: Gen. 2017. V. 533. P. 17.
  15. Deng L., Arakawa T., Ohkubo T., Miura H., Shishido T., Hosokawa S., Teramura K., Tanaka T. // Ind. Eng. Chem. Res. 2017. V. 56. P. 7160.
  16. Xia Z., Liu H., Lu H., Zhang Z., Chen Y. // Appl. Surf. Sci. 2017. V. 422. P. 905.
  17. Yu J., Ge Q., Fang W., Xu H. // Int. J. Hydrogen Energy. 2011. V. 36. P. 11536.
  18. Dong A., Wang K., Zhu S., Yang G., Wang X. // Fuel Process Technol. 2017. V. 158. P. 218.
  19. Du J., Zhao R., Jiao G. // Int. J. Hydrogen Energy. 2013. V. 38. P. 5789.
  20. Li X., Tuo Y., Jiang H., Duan X., Yu X., Li P. // Int. J. Hydrogen Energy. 2015. V. 40. P. 12217.
  21. Shi L., Liu X., Tuo Y., Xu J., Li P. // Int. J. Hydrogen Energy. 2017. V. 42. P. 17403.
  22. Kariya N., Fukuoka A., Ichikawa M. // Appl. Catal. A: Gen. 2002. V. 233. P. 91.
  23. Scherer G.W.H., Newson E., Wokaun A. // Int. J. Hydrogen Energy. 1999. V. 24. P. 1157.
  24. Sinfelt J.H. // J. Mol. Catal. A. Chem. 2000. V. 163. P. 123.
  25. Akram M.S., Aslam R., Alhumaidan F.S., Usman M.R. // Int. J. Chem. Kinet. 2020. V. 52. P. 415.
  26. Alhumaidan F., Cresswell D., Garforth A. // Ind. Eng. Chem. Res. 2011. V. 50. P. 2509.
  27. Usman M.S. Kinetics of Methylcyclohexane Dehydrogenation and Reactor Simulation for “On-board” Hydrogen Storage. PhD Thesis. The University of Manchester, 2010. 299 p.
  28. Gorskii V.G., Katsman E.A., Klebanova F.D., Grigorev A.A. // Theor. Exp. Chem. 1987. V. 23. P. 181.
  29. Темкин О.Н., Брук Л.Г., Зейгарник А.В. // Кинетика и катализ. 1993. T. 34. C. 445.
  30. Fischer A., Iglesia E. Mechanistic Interpretations and Consequences of Hydrogen Spillover in Toluene Hydrogenation Catalysis. AIChE Annual Meeting, 2018.

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2. Scheme 1. Kinetic graph of the mechanism of dehydrogenation of M in T

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3. Fig. 1. Comparison of calculated and experimental values of the degree of transformation of M in T at temperatures 220 (•) and 260°C (▲)

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