Promotion effects on the synthesis of higher alcohols. Ninth quarterly report, July 1984-September 1984

Technical Report · Mon Oct 01 04:00:00 EDT 1984

OSTI ID:6156786

Goodwin, Jr, J G; Chuang, S C

This study has demonstrated that the synthesis of C/sub 2/ oxygenates from CO hydrogenation is closely related to the synthesis of C/sub 3/ oxygenates from reaction of C/sub 2/H/sub 4/ with CO/H/sub 2/. It also confirm the reaction scheme for the synthesis of hydrocarbons and oxygenats as proposed by various investigators. The selectivity and activity of a Rh catalyst is dependent on its ability to catalyze those specific reaction steps such as CO dissociation, hydrogenation and CO insertion. These specific reaction steps were found to be strongly dependent on the type of alkali promoter, support and reaction conditions. The overall effect of alkali promoters on Rh/La/sub 2/O/sub 3/ in the synthesis of oxygenated compound can be summarize as follows: (1) Li-promotion enhance CO inservation step and slightly affected hydrogenation steps over Rh/La/sub 2/O/sub 3/ resulting an increase in selectivity and rate of the formation of C/sub 2/ oxygenated compounds during CO hydrogenation and an increase in selectivity and rate of the formation of C/sub 3/ oxygenated compounds during reaction of ethylene with CO/H/sub 2/; and (2) K and Cs promoters suppress both CO insertion and hydrogenation over Rh/La/sub 2/O/sub 3/ resulting in a decrease in selectivity and activity to oxygenated compounds and a decrease in overall activity. 15 references, 5 tables.

• Research Organization: Pittsburgh Univ., PA (USA). Dept. of Chemical and Petroleum Engineering
• DOE Contract Number: FG22-82PC50810
• OSTI ID: 6156786
• Report Number(s): DOE/PC/50810-T8; ON: DE85002338
• Country of Publication: United States
• Language: English

Related Subjects

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
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ALCOHOLS
ALKALI METALS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CESIUM
CHALCOGENIDES
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
DATA
ELEMENTS
EXPERIMENTAL DATA
HYDROGENATION
HYDROXY COMPOUNDS
INFORMATION
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
LITHIUM
METALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
POTASSIUM
PROMOTERS
RARE EARTH COMPOUNDS
RHODIUM
SPECIFICITY
SYNTHESIS
TRANSITION ELEMENTS