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Cracking And Aromatization Of Butanes Over ZSM-5 Zeolites

  • Yoshio Ono (a1), Kunihiko Kanae (a1), Kazuaki Osako (a1) and Katsumi Nakashiro (a1)

Abstract

The transformation of butanes over H-ZSM-5, Zn-ZSM-5, and Ga-ZSM-5 at 773 K were studied with special emphasis on the activation mechanism of butanes. Over H-ZSM-5, butanes undergo cracking exclusively by a carbonium-ion mechanism at low conversion levels. At higher conversion levels, the activation by a hydride-transfer mechanism are involved. The loading of Zn and Ga greatly enhances the dehydrogenation of starting alkanes as well as intermediate alkenes. The loading of the metal cations promotes also the cracking, especially in the case of isobutane. The synergetic action of the metal cations and protons is proposed as a mechanism of alkane dehydrogenation.

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[1] Ono, Y., Nakatani, H., Kitagawa, H., and Suzuki, E., Stud. Surf. Sci. Catal., 44, 279 (1989)
[2] Gnep, N.S., Doyamet, J.Y., and Guisnet, M., J. Mol. Catal., 45, 281 (1988)
[3] Nishijima, H., Aikawa, S., Kondoh, T., and Hirabayashi, K., Nippon Kagaku Kaishi, 1991, 591
[4] Sirokman, G., Sendoda, Y., and Ono, Y., Zeolites, 6, 299 (1986)
[5] Ono, Y., Sendoda, Y., and Kitagawa, H., J. Petrol. Inst. Jpn, 1987, 77
[6] Mole, T., Anderson, J.R., and Green, G., Appl. Catal., 17, 141 (1985)
[7] Kitagawa, H., Sendoda, Y., and Ono, Y., J. Catal., 101, 12 (1986)
[8] Inui, T., Makino, Y., Okazumi, F., and Miyamoto, A., Stud. Surf. Sci. Catal., 37, 487 (1988)
[9] Kanai, J. and Kawata, N., J. Catal., 114, 284 (1984)
[10] Kanae, K. and Ono, Y., J. Chem. Soc., Faraday Trans. 87, 663 (1991)
[11] Kanae, K. and Ono, Y., J. Chem. Soc., Faraday Trans. 87, 669 (1991)
[12] Ono, Y., Adachi, H., and Sendoda, Y., J. Chem. Soc., Faraday Trans. 1, 84, 1091 (1988)
[13] Lombardo, E.A. and Hall, W.K., J. Catal., 112, 565 (1988)
[14] Lombardo, E.A. and Hall, W.K., J. Catal., 116, 171 (1988)
[15] Ono, Y., Kitagawa, H., and Sendoda, Y., J. Chem. Soc., Faraday Trans. 1, 83, 2913 (1987)
[16] Poustma, M.I., in “Zeolite Chemistry and Catalysis,” ed. by Rabo, J.A., ACS Monograph 171 (American Chemical Society, Washington D.C., 1976), p. 473
[17] Meriaudeau, P. and Naccache, C., J. Mol. Catal., 99, L31 (1990)

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