Direct synthesis of 2-methyl-1-propanol/methanol fuels and feedstocks: Technical progress report, September 1984--February 1985
The present program of research stems from our recent discovery that cesium surface-doped methanol synthesis catalysts, based on copper-zinc oxide, are very effective in producing C/sub 2/-C/sub 7/ alcohols, in addition to methanol, with the dominant product being 2-methyl-1-propanol. The underlying mechanistic principle is that of base-catalyzed condensation of alcohol precursors with the C/sub 1/ aldehydic intermediate that is formed by CO hydrogenation over the Cu/ZnO of the catalyst. This base catalysis results in three types of reactions: (1) linear growth, (2) beta branching, and (3) coupling via oxygen to form small amounts of esters. These types of reactions are characterized as i/sub C-O/ (type i), ..beta../sub C/ (type ii), and ..cap alpha../sub O/ (type iii). We have demonstrated that conditions can be found over the Cs/Cu/ZnO catalyst under which ..beta../sub C/>i/sub CO/>>..cap alpha../sub O/. The extent research has progressed in the direct synthesis of 2-methyl-1-propanol/methanol mixtures is detailed in Attachment 1. In a search for the best composition and initial state and dispersion of the aluminum-containing component in alumina-based alcohol synthesis catalysts, where the alumina will aid the long term stability of the catalyst system, series of Cu/ZnO/Al/sub 2/O/sub 3/ and Cs/Cu/ZnO/Al/sub 2/O/sub 3/ are being prepared and characterized. In order to determine the role of preparation conditions on the formation of active, stable, and selective catalysts, the catalyst precursors formed during the coprecipitation process are being identified. Descriptions of the precursors and the methods used in their identification are given in Attachment 2. 1 tab.
- Research Organization:
- Lehigh Univ., Bethlehem, PA (USA)
- DOE Contract Number:
- AC22-84PC70021
- OSTI ID:
- 6185453
- Report Number(s):
- DOE/PC/70021-1; ON: DE89008257
- Country of Publication:
- United States
- Language:
- English
Similar Records
Direct synthesis of 2-methyl-1-propanol/methanol fuels and feedstocks: Final technial report, September 15, 1984--January 14, 1988: Revision 1
Direct synthesis of 2-methyl-1-propanol/methanol fuels and feedstocks: Quarterly technical progress report, September--November 1986
Related Subjects
10 SYNTHETIC FUELS
ALCOHOL FUELS
ALKALI METALS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CATALYST SUPPORTS
CATALYTIC EFFECTS
CESIUM
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
COPPER
DOCUMENT TYPES
ELEMENTS
FLUIDS
FUELS
GASES
HYDROGENATION
METALS
METHANOL FUELS
OXIDES
OXYGEN COMPOUNDS
PROGRESS REPORT
SYNTHESIS
SYNTHESIS GAS
SYNTHETIC FUELS
TEMPERATURE DEPENDENCE
TRANSITION ELEMENTS
YIELDS
ZINC COMPOUNDS
ZINC OXIDES