Abstract
The nature of the pivotal intermediate during the synthesis of methanol from CO2/H2, in the presence of ZnO/ZrO2 aerogel catalyst is envisaged. The kinetic studies performed using in situ FTIR spectroscopy of the species formed on the surface of the catalyst in the absence and in the presence of hydrogen show that the initial reactive adsorbed species formed from C02 gas is the unidentate carbonate species. Its hydrogenation into the formate species is much faster than the hydrogenation of the formate species into methoxyl species. The comparison is based on a quantitative measurement of the rate constant of the hydrogenation of the various species. The results explain that during the C02/H2 reaction only formate and methoxyl species are observed.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
J.C.J. Bart and R.P.A. Sneeden, Catal. Today 2 (1987) 1, and references therein.
E. Guglieminetti, Langmuir 6 (1990) 1445.
G.C. Chinchen and M.S.S. Spencer, J. Chem. Soc. Faraday Trans. 86 (1990) 2683.
S.G. Neophytides, A.J. Marchi and G.F. Froment, Appl. Catal. A 86 (1992) 45.
M. Bowker, R.A. Hadden, H. Houghton, J.N.K. Hyland and K.C. Waugh, J. Catal. 109 (1998) 263.
G.J. Millar, C.H. Rochester and K.C. Waugh, Catal. Lett.14 (1992) 289.
C. Schild, A. Wokaun and A. Baiker, J. Mol. Catal. 63 (1990) 223.
C. Schild, A. Wokaun and A. Baiker, J. Mol. Catal. 63 (1990) 243.
J. Kondo, H. Abe, Y. Sakata, K. Maruya, K. Domen and T. Onishi, J. Catal. 109 (1988) 263.
R. Burch, S. Chalker and J. Pritchard, J. Chem. Soc. Faraday Trans. 87 (1991) 1791.
D. Bianchi, J.L. Gass, M. Khalfallah and S.J Teichner, Appl. Catal. A 101 (1993) 297.
B. Pommier and S.J. Teichner, in:Proc. 9th Int. Congr. on Catalysis, Vol. 2, Calgary 1988, eds. M.J. Phillips and M. Ternan (The Chem. Inst. of Canada, Ottawa, 1988) p. 610.
D. Bianchi, T. Chafik, M. Khalfallah and S.J. Teichner, Appl. Catal. A 105 (1993) 223.
D. Bianchi, T. Chafik, M. Khalfallah and S.J. Teichner, Appl. Catal. A 112 (1994) 219.
M.Y. He and J.G. Ekerdt, J. Catal. 87 (1984) 381.
S. Takafumi and Y. Iwasawa, J. Catal. 129 (1991) 343.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Chafik, T., Bianchi, D. & Teichner, S.J. On the mechanism of the methanol synthesis involving a catalyst based on zirconia support. Top Catal 2, 103–116 (1995). https://doi.org/10.1007/BF01491959
Issue Date:
DOI: https://doi.org/10.1007/BF01491959