Abstract
Catalysts containing copper, zinc and aluminium oxides are used extensively in hydrogenation reactions, low temperature water-gas shift and low pressure methanol synthesis processes. In the present study, the effects of certain pertinent preparation parameters on catalysts' activity have been studied, applying the saturated fractional factorial experimental design method. The influence of time and temperature of calcination, aging time, the method of mixing of reactant solutions, the nature of the precipitant and the molar ratio of the latter to metal nitrates have been investigated. The catalysts prepared, using sodium carbonate showed higher activities relative to those synthesized by applying sodium hydrogen carbonate. Higher temperatures and longer time of calcination have profound effects on the activity of catalysts prepared, using sodium hydrogen carbonate. Shorter aging times and higher molar ratios of precipitant to metal nitrates promoted the activity of catalysts prepared by sodium carbonate. In case of catalysts synthesized, using sodium hydrogen carbonate as the precipitant, the aging time should be maintained as short as possible in order the catalysts to acquire higher activities.
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REFERENCES
J.B. Hansen: Handbook of Heterogeneous Catalysts, Vol.3, Methanol Synthesis (G. Ertl, H. Knözinger, J. Weitkamp, Editors), VCH, Weinheim 1997.
A.B. Stiles, T.A. Koch: Catalyst Manufacture, 2nd Edition. Marcel Dekker, New York 1995.
G.K. Boreskov: Preparation of Catalysts, (B. Delmon, P.A. Jacobs, G. Poncelet, Editors), p. 223. Elsevier, Amsterdam 1976.
A.L. Boyce, P.A. Sermon, M.S.W. Vong, M.A. Yates: React. Kinet Catal. Lett., 44, 309 (1991).
A.B. Stiles: Catalyst Manufacture. Laboratory and Commercial Preparations. Marcel Dekker, New York 1983.
J.E. Edwards, G.L. Schrader: J. Phys. Chem., 88, 5620 (1984).
P. Porta, S. De Rossi, G. Ferraris, M.L. Jacona, G. Minelli, G. Moretti: J. Catal., 109, 367 (1988).
P.B. Himelfarb, G. Simmons, K. Klier, J. Yacaman: Catalyst Characterization Science, Surface and Solid State Chemistry. (M.L. Deviney, J.L. Gland, Editors) ACS Symposium Series No. 228, p. 351. ACS, Washington D.C. 1985.
R.H. Hoppener, E.B.M. Doesburg, J.J.F. Scholten: Appl. Catal., 25, 109 (1986).
D.S. Shishkov, N.A. Kassabova, K.N. Petkov: Preparation of Catalysts. (G. Poncelet, P.A. Jacobs Editors), Vol. 3. Elsevier, Amsterdam 1983.
R.K. Sharma, B. Sen, T.P. Minyukova, T.M. Yurieva: Recent Developments in Catalysis. Edition Technip, Paris 1992.
P. Stefanov, T. Marinova, N. Kasabova, D. Shishkov, I. Risha: J. Bulg. Acad. Sci., 23, 370 (1990).
R.W. Joyner, F. King, M.A. Thomas, G. Roberts: Catal. Today, 10, 417 (1991).
G.C. Chinchen, L. Davis: Studies in Surface Science and Catalysis, Vol. 91, Preparation of Catalysts (G. Poncelet, J. Matens, B. Delmon, P.A. Grange, P. Jacobs, Editors). Elsevier, Amsterdam 1995.
Y. Amenomiya: Appl. Catal., 30, 69 (1987).
C.K. Bayne, I.B. Rubin: Practical Experimental Design and Optimization Methods for Chemists. VCH Publishers, Weinheim 1986.
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Irandoukht, A., Sohrabi, M. & Mandegarian, R. Effect of Preparation Parameters on the Activity of Methanol Synthesis Catalysts: A Laboratory Scale Study. Reaction Kinetics and Catalysis Letters 70, 259–264 (2000). https://doi.org/10.1023/A:1010328613993
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DOI: https://doi.org/10.1023/A:1010328613993