Abstract
The activity in terms of conversion of carbon monoxide was determined for Co/SiO2 catalysts in CO hydrogenation over a reaction time of 120 h. The catalysts were prepared from nitrate (N) and carbonyl (CO) precursors. The conversion decreased rapidly during the first five hours, and thereafter moderately at a rate related to dispersion, i.e. the higher the dispersion the higher the rate of decrease. The active sites were blocked by wax and coke formed in the reaction, although some agglomeration of particles probably took place on the Co(CO)/SiO2 catalysts. More carbon was accumulated on Co(CO)/SiO2 than on Co(N)/SiO2 during the reaction suggesting a need for frequent regeneration. The reduction-oxidation-reduction treatments indicated, however, that the regenerability of the Co(CO)/SiO2 in terms of hydrogen uptake is poor, although the amounts adsorbed still remained higher than those for Co(N)/SiO2.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
B.G. Johnson, M. Rameswaran, M.D. Patil, G. Muralidhar and C.H. Bartholomew, Catal. Today 6 (1989) 81.
K. Takeuchi, T. Matsuzaki, T. Hanaoka, H. Arakawa and Y. Sugi, J. Mol. Catal. 55 (1989) 361.
K. Takeuchi, T. Matsuzaki, H. Arakawa, T. Hanaoka and Y. Sugi, Appl. Catal. 48 (1989) 149.
M.K. Niemelä, A.O.I. Krause, T. Vaara and J. Lahtinen, Topics Catal. 2 (1995) 45.
M.K. Niemelä, A.O.I. Krause, J.J. Kiviaho and M.K.O. Reinikainen, Appl. Catal., in press.
T. Matsuzaki, K. Takeuchi, T. Hanaoka, H. Arakawa and Y. Sugi, Appl. Catal. 105 (1993) 159.
A.S. Lisitsyn, A.V. Golovin, V.L. Kuznetsov and Yu.I. Yermakov, C1 Mol. Chem. 1 (1984) 115.
C.H. Bartholomew,New Trends in CO Activation, Studies in Surface Science and Catalysis, Vol. 64 (Elsevier, Amsterdam, 1991) p. 158.
B.G. Johnson, C.H. Bartholomew and D.W. Goodman, J. Catal. 128 (1991) 231.
M.P. Rosynek and C.A. Polansky, Appl. Catal. 73 (1991) 97.
P.K. Agrawal, J.R. Katzer and W.H. Manogue, J. Catal. 69 (1981) 312.
A.S. Lisitsyn, A.V. Golovin, A.L. Chuvilin, V.L. Kuznetsov, A.V. Romanenko, A.F. Danilyuk and Yu.I. Yermakov, Appl. Catal. 55 (1989) 235.
H.W. Pennline and S.S. Pollack, Ind. Eng. Chem. Prod. Res. Dev. 25 (1986) 11.
P. Holloway and M. Puga-Lambers, University of Florida, private communication (1995).
O. Jylhä, A. Toivo and K. Wikström, Neste Corp., private communication (1995).
W.A. Dietz, J. Gas Chromatogr. (1967) 68.
M.K. Niemelä and A.O.I. Krause, Book of Abstracts, Europacat-II, Maastricht, 4–8 September 1995, p. 671.
H. Schulz, Pure Appl. Chem. 51 (1979) 2225.
S. Mukkavilli and C. Witman, Ind. Eng. Chem. Proc. Des. Dev. 25 (1986) 487.
G.R. Fredriksen, E.A. Blekkan, D. Schanke and A. Holmen, Chem. Eng. Technol. 18 (1995) 125.
M.E. Dry, in:Catalysis Science and Technology, Vol. 1, eds. J.R. Anderson and M. Boudart (Springer, Berlin, 1981) p. 195.
P.K. Agrawal, PhD Dissertation, University of Delaware, USA (1979) p. 400.
D.A. Hucul, PhD Dissertation, Wayne State University, Detroit, USA (1980).
R.L. Chin and D.M. Hercules, J. Phys. Chem. 86 (1982) 360.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Niemelä, M.K., Krause, A.O.I. The long-term performance of Co/SiO2 catalysts in CO hydrogenation. Catal Lett 42, 161–166 (1996). https://doi.org/10.1007/BF00810682
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00810682