Abstract
Morphologies of coke deposited on pure Ni and Fe-Cr-Ni-Mn alloy surfaces during pyrolysis of propane at 750–1000°C have been investigated in detail. It is found that surface scales developed initially on pure Ni and Fe-Cr-Ni-Mn alloy surfaces have no catalytic effect on deposition of filamentary coke. But metal or alloy substrates under cracked scales strongly catalyze nucleation and growth of filamentary coke along the cracks. Ni is more efficient to catalyze the growth of filamentary coke than Fe-Cr-Ni-Mn alloys. The structure of oxide scales has marked influence on distribution and size of filamentary coke deposited on alloy surfaces. Coking morphology is closely dependent of coking temperature and time. Either increasing coking temperature or prolonging coking time results in coking morphology changes from filamentary to spherical. Both dissolution/precipitation mechanism and direct nucleation and growth mechanism may make a contribution to the development of graphitic film coke.
Similar content being viewed by others
References
S. Ibarra, Metall. Prog. 2 (1980) 62.
L. F. Albright and C. F. Mcconnell, “Advances in Chemistry Series,” No. 183 (Amer. Chem. Soc., Washington, D. C., 1979).
M. J. Graff and L. F. Albright, Carbon 26 (1982) 319.
N. S. Figoli, J. N. Beltramini, A. D. Barra, E. E. Martinelli, M. R. Sad and J. M. Parera, in “ACS Symposium Series,” Vol. 202 (Academic Press, New York, 1981) p. 239.
L. G. Tischer and M. S. Wing, in U.S. Patent no. 3,773,850 (1973).
L. V. Talisman and M. A. Shaburov, Int. Chem. Eng. 8 (1968) 105.
L. T. Shinoda, M. B. Zaghloul, Y. Kondo and R. Tanaka, Trans. Iron Steel Inst. Jpn. 18 (1978) 139.
H. Wen-tai and R. W. K. Honeycombe, Mater. Sci. Technol. 1 (1985) 385.
G. D. Barbabela, L. H. Almeida, T. L. Silverira and I. May, Mater. Charact. 26 (1991) 193.
G. D. A. Soares, L. H. Almeida, T. L. Silveira and I. May, ibid. 29 (1992) 387.
C. W. Thomas, M. Borshevsky and A. N. Marshall, Mater. Sci. Technol. 8 (1992) 855.
J. Kelly, Ind. Heating 10 (1995) 42.
C. W. Thomas, K. J. Stevens and M. J. Ryan, Mater. Sci. Technol. 12 (1996) 469.
T. Shinohara, I. Kohchi, K. Shibata, J. Sugitani and K. Tsuchida, Werkst. Korros. 37 (1986) 410.
D. L. Trimm, Catal. Rev. Sci. Eng. 16 (1977) 155.
R. H. Kane, Corrosion 37 (1981) 187.
P. R. S. Jackson, D. J. Young and D. L. Trimm, J. Mater. Sci. 21 (1986) 4376.
H. B. Palmer, J. Lahaye and K. C. Hou, J. Phys. Chem. 72 (1968) 348.
E. L. Evans, J. M. Thomas, P. A. Thrower and P. L. Walker, Carbon 11 (1973) 441.
D. L. Trimm, Catal. Rev. Sci. Eng. 16 (1977) 155.
R. T. K. Baker, M. A. Barber, P. S. Harris, F. S. Feates and R. J. Waite, J. Catalysis 26 (1972) 51.
H. P. Boehm, Carbon 11 (1973) 583.
D. Nohara and T. Sakai, Ind. Eng. Chem., Fundam. 19 (1980) 340.
Y. Tamai, Y. Nishiyama and G. Takahashi, J. Chem. Soc. Japan. Inst. Soc. 70 (1967) 889.
S. M. Iring and P. L. Walker, Carbon 5 (1967) 399.
F. J. Derbyshire, A. E. B. Presland and D. L. Trimm, ibid. 10 (1972) 114.
R. T. K. Baker, D. J. C. Yates and J. A. Dumesic, “Coke Formation on Metal Surface” (ACS Symposium Series, Academic Press, New York, 202, 1981) p. 1.
S. Ando, Y. Okamoto, T. Shimoo and H. Kimura, Trans. Japan. Inst. Metall. 27 (1986) 441.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Wu, X.Q., Yang, Y.S., He, W.Y. et al. Morphologies of coke deposited on surfaces of pure Ni and Fe-Cr-Ni-Mn alloys during pyrolysis of propane. Journal of Materials Science 35, 855–862 (2000). https://doi.org/10.1023/A:1004734021263
Issue Date:
DOI: https://doi.org/10.1023/A:1004734021263