The effect of chemical additives on the synthesis of ethanol
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/SiO{sub 2} was investigated by in-situ infrared spectroscopy. Ni/SiO{sub 2}, a methanation catalyst, has been shown to exhibit CO insertion activity. In situ infrared studies of CO/H{sub 2} and C{sub 2}H{sub 4}/CO/H{sub 2} reactions show that the carbonylation of Ni/SiO{sub 2} to Ni(CO){sub 4} leads to an inhibition of methanation in CO hydrogenation but an enhancement of formation of propionaldehyde in C{sub 2}H{sub 4}/CO/H{sub 2} reaction. The results suggest that the sites for propionaldehyde formation is different from those for methanation.
- Research Organization:
- Akron Univ., OH (United States). Dept. of Chemical Engineering
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG22-87PC79923
- OSTI ID:
- 7205413
- Report Number(s):
- DOE/PC/79923-T13; ON: DE92018891
- Country of Publication:
- United States
- Language:
- English
Similar Records
The effect of chemical additives on the synthesis of ethanol. Technical progress report 6, December 16, 1988--March 15, 1989
The effect of chemical additives on the synthesis of ethanol. Technical progress report 15, March 15, 1991--June 15, 1991
Related Subjects
ETHANOL
CHEMICAL PREPARATION
METHANATION
CATALYSTS
NICKEL
CATALYTIC EFFECTS
RHODIUM
ADDITIVES
ADSORPTION
CARBON MONOXIDE
CONVERSION
HYDROGENATION
INFRARED SPECTRA
NITRIC OXIDE
PROGRESS REPORT
SYNTHESIS GAS
ALCOHOLS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
DOCUMENT TYPES
ELEMENTS
FLUIDS
GASES
HYDROXY COMPOUNDS
METALS
NITROGEN COMPOUNDS
NITROGEN OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
SORPTION
SPECTRA
SYNTHESIS
TRANSITION ELEMENTS
010408* - Coal
Lignite
& Peat- C1 Processes- (1987-)