Mesoporous Carbon-Based Rhodium Catalysts for Benzene Hydrogenation

Authors

  • J. M. Jandosov Institute of Combustion Problems, 172 Bogenbai Batyr st., 050012, Almaty, Kazakhstan
  • Z. A. Mansurov Institute of Combustion Problems, 172 Bogenbai Batyr st., 050012, Almaty, Kazakhstan
  • M. A. Biisenbayev Institute of Combustion Problems, 172 Bogenbai Batyr st., 050012, Almaty, Kazakhstan
  • Z. R. Ismagilov Boreskov Institute of Catalysis, 5, Pr. Akad. Lavrentieva, 630090, Novosibirsk, Russia
  • N. V. Shikina Boreskov Institute of Catalysis, 5, Pr. Akad. Lavrentieva, 630090, Novosibirsk, Russia
  • I. Z. Ismagilov Boreskov Institute of Catalysis, 5, Pr. Akad. Lavrentieva, 630090, Novosibirsk, Russia
  • S. R. Konuspayeva Institute of Combustion Problems, 172 Bogenbai Batyr st., 050012, Almaty, Kazakhstan
  • M. Shaymardan Institute of Combustion Problems, 172 Bogenbai Batyr st., 050012, Almaty, Kazakhstan

DOI:

https://doi.org/10.18321/ectj97

Abstract

Two different carbons, namely CAS-P-500 and CRH-P-500, were prepared from apricot stones and rice husk by H3PO4-activation at 500 ºC and H3PO4/precursor (wt/wt) impregnation ratio of 2:1 followed by water washing and desilication by NaOH solution respectively. Elemental analyses of both samples using X-ray fluorescence spectroscopy and VARIO ELEMENTAR III elemental analyzer detected up to 1% of remained phosphorus and about 88% of carbon. SEM characterization and nitrogen adsorption data revealed that highly mesoporous materials were obtained. According to BJH scheme calculations, N2 BET-surface area and pore volume for CAS-P-500 reached the values of 2030 m2/g and 1.64 cm3/g, while for CRH-P-500: 1690 m2/g and 1.95 cm3/g respectively. Activated carbons CAS-P-500 and CRH-P-500 were used as catalyst supports for the conversion of small amounts of benzene into cyclohexane to obtain cleaner gasoline. According to Euro-3 standards, gasoline should contain less than 1% of benzene, since the incomplete combustion of gasoline, which contains benzene, leads to formation of benzopyrene- a powerful carcinogen in exhaust gases. The activity of rhodium catalysts based on the CAS-P-500 and CRH-P-500 allow complete conversion of benzene into cyclohexane at 40 atm and 80oC temperature and is comparable to those of based on conventional carbons: “Sibunit”, etc.

References

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3. Jandosov JM, Shikina NV, Bijsenbayev MA, Shamalov ME, Ismagilov ZR, Mansurov ZA. Evaluation of Synthetic Conditions for H3PO4 Chemically Activated Rice Husk and Preparation of Honeycomb Monoliths. Eurasian Chem. Tech. J 2009;11(3):245-252.

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Published

2012-02-15

How to Cite

Jandosov, J. M., Mansurov, Z. A., Biisenbayev, M. A., Ismagilov, Z. R., Shikina, N. V., Ismagilov, I. Z., … Shaymardan, M. (2012). Mesoporous Carbon-Based Rhodium Catalysts for Benzene Hydrogenation. Eurasian Chemico-Technological Journal, 14(1), 37–40. https://doi.org/10.18321/ectj97

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