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The effect of chemical additives on the synthesis of ethanol. Technical progress report 6, December 16, 1988--March 15, 1989 [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 1989.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
15 pages : digital, PDF file
Additional Creators
University of Akron, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
The objective of this research is to elucidate the role of various chemical additives on ethanol synthesis over Rh- and Ni-based catalysts. Chemical additives used for this study will include S, P, Ag, Cu, Mn, and Na which have different electronegativeities. The effect of additives on the surface state of the catalysts, heat of adsorption of reactant molecules, reaction intermediates, reaction pathways, reaction kinetics, and product distributions is/will be investigated by a series of experimental studies of NO adsorption, reactive probing, steady state rate measurement, and transient kinetic study. CO insertion is known to be a key step to the formation of acetaldehyde and ethanol from CO hydrogenation. Reaction of ethylene with syngas is used as a probe to determine CO insertion capabilities of metal catalysts. During the sixth quarter of the project, the mechanism of CO insertion on Ni/SiO₂ was investigated by in-situ infrared spectroscopy. Ni/SiO₂, a methanation catalyst, has been shown to exhibit CO insertion activity. In situ infrared studies of CO/H₂ and C₂H₄/CO/H₂ reactions show that the carbonylation of Ni/SiO₂ to Ni(CO)₄ leads to an inhibition of methanation in CO hydrogenation but an enhancement of formation of propionaldehyde in C₂H₄/CO/H₂ reaction. The results suggest that the sites for propionaldehyde formation is different from those for methanation.
Report Numbers
E 1.99:doe/pc/79923--t13
doe/pc/79923--t13
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
04/30/1989.
"doe/pc/79923--t13"
"DE92018891"
Chuang, S.S.C.
Type of Report and Period Covered Note
Quarterly; 01/01/1989 - 03/31/1989
Funding Information
FG22-87PC79923
View MARC record | catkey: 13840203