Higher alcohol synthesis over double bed Cs-Cu/ZnO/Cr{sub 2}O{sub 3} catalysts: Optimizing the yields of 2-methyl-1-propanol (isobutanol)
- Lehigh Univ., Bethlehem, PA (United States)
Higher alcohol synthesis from H{sub 2}/CO has been carried out over two tandem beds of a cesium-promoted Cu/ZnO/Cr{sub 2}O{sub 3} catalyst with a temperature difference between the beds. Lower alcohols produced in the low temperature top bed are supplied as oxygenated precursors to the higher temperature bottom bed to react further in the chain growth process leading to the formation of higher alcohols. In this configuration, a high space time yield of 202 g/kg of catalyst/h of 2-methyl-1-propanol (isobutanol) was obtained. This presently observed yield of isobutanol in a double bed configuration with the copper-based catalyst in both beds represents a very significant enhancement over the earlier reported isobutanol yields in a double bed configuration with a copper-free catalyst in the second bed . A kinetic reaction network was modified to model this double bed catalyst configuration. This model was then used to obtain kinetic parameters and predict product yields for the reaction system in the current study. It was also demonstrated that the kinetic model could be used as a predictive tool to optimize experimental parameters. In particular, the model was used to predict the optimum mass ratio of the two catalyst beds to produce the maximum yield of isobutanol.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- OSTI ID:
- 321078
- Journal Information:
- Industrial and Engineering Chemistry Research, Journal Name: Industrial and Engineering Chemistry Research Journal Issue: 12 Vol. 37; ISSN IECRED; ISSN 0888-5885
- Country of Publication:
- United States
- Language:
- English
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