Trifunctional catalysts for conversion of syngas to alcohols: Tenth quarterly report for period December 1, 1986 to February 28, 1987. [CO chemisorbed on rhodium/alumina catalysts - one series modified by molybdena and the other by sodium addition]

Technical Report · Wed Mar 25 04:00:00 EST 1987

OSTI ID:6741622

Bischoff, K B; Manogue, W H; Mills, G A

Changes in adsorption sites on Rh/Al/sub 2/O/sub 3/ catalysts brought about by addition of sodium or by molybdena, was quantified by adsorption of hydrogen and of carbon monoxide. Fresh and used catalyst were tested. XRD was done to rule out the presence of crystalline compound formation. Infrared measurements showed that C-O bond is strengthened slightly by molybdena addition. Hence the enhanced activity of Rh/Mo/Al/sub 2/O/sub 3/ is caused neither by a greater number of CO sites nor by weakening of CO bond. The role of sodium in removing surface -OH groups, which in turn changes the distribution of different carbonyl species on the surface, was tested. Detailed kinetic data for Rh/Mo/Al/sub 2/O/sub 3/ having different amounts of molybdena were collected. Analysis of rate of formation for primary products were carried out. Activation energies for various reactions were calculated and its implication on the reaction scheme is discussed. The analysis of secondary reactions is underway. 6 figs., 4 tabs.

• Research Organization: Delaware Univ., Newark (USA). Center for Catalytic Science and Technology
• DOE Contract Number: FG22-84PC70780
• OSTI ID: 6741622
• Report Number(s): DOE/PC/70780-T6; ON: DE87007384
• Country of Publication: United States
• Language: English

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10 SYNTHETIC FUELS
ACTIVATION ENERGY
ADSORPTION
ALCOHOLS
ALKALI METALS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
COHERENT SCATTERING
DATA
DIFFRACTION
ELEMENTS
ENERGY
EXPERIMENTAL DATA
HYDROGEN
HYDROGENATION
HYDROXY COMPOUNDS
INFORMATION
INFRARED SPECTRA
METALS
MOLYBDENUM
MOLYBDENUM COMPOUNDS
MOLYBDENUM OXIDES
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
REFRACTORY METAL COMPOUNDS
RESEARCH PROGRAMS
RHODIUM
SCATTERING
SODIUM
SORPTION
SORPTIVE PROPERTIES
SPECIFICITY
SPECTRA
SURFACE PROPERTIES
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
X-RAY DIFFRACTION