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Studies in Surface Science and Catalysis 119


Page 502


,00 1

0.80 l



0.40 I o


0.00 ----



600 K

"~ 8 MPa

4 MPa

0.02 0.03 0.04 0.0
Ethanol injection [mol/h/gcat]

Figure 4.
The butanol yield as a function of ethanol injection for the pressure 7 and 4 MPa, 600 K, 20g of
catalyst and the syngas composition: CO-19 H2-74, CO2-0, N2-7 % mol.

Figure 5.



- 1
.~ 0.04



0.02 --





e e

600 K

"~ 8 MPa

4 MPa

0.02 0.04 0.0
Methano l injection [mol/h/gcat]

The pentanol yield as a function of methanol injection for the pressure 7 and 4MPa, 600 K, 20g of
catalyst and the syngas composition: CO-19 H2-74, CO2-0, N2-7 % mol.

Page 503


0.16 t

0. ,2

_~ -
.~ 0.08 - m,


Figure 6.

0.04 ~ S �9
I �9 600 K

"~" 8 MPa

4 MPa
0.00 ~ - 1 T .... I T T , -! T " ]

0.00 0.01 0.02 0.03 0.04 0.0
E t h a n o l i n j ec t i on [ m o i / h / g c a t ]

The pentanol yield as a function of ethanol injection for the pressure 7 and 4 MPa, 600 K, 20g of
catalyst and the syngas composition: CO-19 H2-74, CO2-0, N2-7 % mol.

This enrichment of the C3+ alcohols yields is even more than ten times in comparison with
synthesis of alcohols only from syngas and it is quite similar like in the J.G.Nunan's [2] paper, but
there are still no by-products (only the traces of methane) in our product. The addition of methanol
is less efficient than that of ethanol. Our results were not consistent with those reported by Majocchi
et al. [5], where the addition of C, to feed stream did not produce any significant change in the
formation of higher alcohols, only the injection of C2 was accompanied by a significant promotion
of propanol production.

The results indicate that the higher alcohols are obtained by carbon chain growth, probably with
COH~CCOH (a-addition) as the slow initial step of chain growth and the rate determining step.
This problem is of considerable practical interest that could find application in industry.


1 A.Kienneman, H.Idriss, R.Kieffer, P.Chaumette, D.Durand, Ind. Eng.Chem.Res., 30 (1991)

2 J.G.Nunan, Ch.E.Bogdan, K.Klier, K.J.Smith, Ch-W.Young, R.G.Herman, J.Catal. 116 (1989)

3 J.G.Nunan, Ch.E.Bogdan, .G.Herman, K.Klier, Cat.Lett. 2 (1989) 49.
4 D.Z. Wang, Chin. J. Fuel Chem. Techn., 22 (1) (1994) 63.
5 L.Majocchi, L.Lietti, A.Beretta, E.Micheli, P.Forzatti, EUROPACAT-III, Krak6w 1997.

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Hydrotreatment and Hydrocracking of Oil Fractions
Proceedings ofthe 1st International Symposium / 6th European Workshop,
Oostende, Belgium, February 17-19, 1997
edited by G.F. Froment, B. Delmon and P. Grange
Natural Gas Conversion IV
Proceedings ofthe 4th International Natural Gas Conversion Symposium,
Kruger Park, South Africa, November 19-23, 1995
edited by M. de Pontes, R.L. Espinoza, C.P. Nicolaides, J.H. Scholtz and
M.S. Scurrell
Heterogeneous Catalysis and Fine Chemicals IV
Proceedings of the 4th International Symposium on Heterogeneous Catalysis and
Fine Chemicals, Basel, Switzerland, September 8-12, 1996
edited by H.U. Blaser, A. Baiker and R. Prins
Dynamics of Surfaces and Reaction Kinetics in Heterogeneous Catalysis.
Proceedings ofthe International Symposium, Antwerp, Belgium, September 15-17, 1997
edited by G.F. Froment and K.C. Waugh
Third World Congress on Oxidation Catalysis.
Proceedings of the Third World Congress on Oxidation Catalysis, San Diego, CA,
U.S.A., 21-26 September 1997
edited by R.K. Grasselli, S.T. Oyama, A.M. Gaffney and J.E. Lyons
Catalyst Deactivation 1997.
Proceedings ofthe 7th International Symposium, Cancun, Mexico, October 5-8, 1997
edited by C.H. Bartholomew and G.A. Fuentes
Spillover and Migration of Surface Species on Catalysts.
Proceedings ofthe 4th International Conference on Spillover, Dalian, China,
September 15-18, 1997
edited by Can Li and Qin Xin
Recent Advances in Basic and Applied Aspects of Industrial Catalysis.
Proceedings ofthe 13th National Symposium and Silver Jubilee Symposium of
Catalysis of India, Dehradun, India, April 2-4, 1997
edited by T.S.R. Prasada Rao and G. Murali Dhar
Advances in Chemical Conversions for Mitigating Carbon Dioxide.
Proceedings ofthe 4th International Conference on Carbon Dioxide Utilization,
Kyoto, Japan, September 7-11, 1997
edited by T. Inui, M. Anpo, K. Izui, S. Yanagida and T. Yamaguchi
Methods for Monitoring and Diagnosing the Efficiency of Catalytic Converters.
A patent-oriented survey
by M. Sideris
Catalysis and Automotive Pollution Control IV.
Proceedings ofthe 4th International Symposium (CAPoC4), Brussels, Belgium,
April 9-11, 1997
edited by N. Kruse, A. Frennet and J.-M. Bastin
Mesoporous Molecular Sieves 1998
Proceedings of the 1st International Symposium, Baltimore, MD, U.S.A.,
July 10-12, 1998
edited by L.Bonneviot, F. B61and, C. Danumah, S. Giasson and S. Kaliaguine
Preparation of Catalysts VII
Proceedings of the 7th International Symposium on Scientific Bases for the
PreParation of Heterogeneous Catalysts, Louvain-la-Neuve, Belgium,
September 1-4, 1998
edited by B. Delmon, P.A. Jacobs, R. Maggi, J.A. Martens, P. Grange and G. Poncelet
Natural Gas Conversion V
Proceedings of the 5th International Gas Conversion Symposium, Giardini-Naxos,
Taormina, Italy, September 20-25, 1998
edited by A. Parmaliana, D. Sanfilippo, E Frusteri, A. Vaccari and F. Arena

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