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Homogeneous catalysis of the water gas shift reaction using iron pentacarbonyl

Journal Article · · J. Am. Chem. Soc.; (United States)
DOI:https://doi.org/10.1021/ja00523a020· OSTI ID:5362720
; ;

Measurements have been carried out to determine the rate of hydrogen production by the water gas shift reaction (CO + H/sub 2/O ..-->.. CO/sub 2/ + H/sub 2/) operating at temperatures less than 200/sup 0/C with iron pentacarbonyl serving as a catalyst precursor in a basic methanol-water solution. Turnover numbers of 2000 mol H/sub 2//mol Fe(CO)/sub 5/ per day are achieved at 180/sup 0/C with this system. The reaction is shown to be zero order with respect to carbon monoxide. The temperature dependence of this reaction corresponds to an activation energy of 22 kcal/mol. It is shown that a threshold pressure of carbon monoxide exists above which the catalytic reduction of water can be sustained. Below this pressure, the Fe(CO)/sub 5/ is destroyed in a stoichiometric reduction of water. The overall kinetics of this reaction as well as this threshold phenomenon can be explained according to previously published mechanisms.

Research Organization:
Univ. of Georgia, Athens
OSTI ID:
5362720
Journal Information:
J. Am. Chem. Soc.; (United States), Journal Name: J. Am. Chem. Soc.; (United States) Vol. 102:3; ISSN JACSA
Country of Publication:
United States
Language:
English

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Related Subjects

08 HYDROGEN
080104* -- Hydrogen-- Production-- Water Gas Processes
ACTIVATION ENERGY
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CARBONYLS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
DATA
DATA FORMS
ENERGY
EXPERIMENTAL DATA
HIGH TEMPERATURE
HYDROGEN COMPOUNDS
HYDROGEN PRODUCTION
INFORMATION
IRON COMPOUNDS
ISOLATED VALUES
KINETICS
MEDIUM PRESSURE
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PRESSURE DEPENDENCE
REACTION KINETICS
SHIFT PROCESSES
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
WATER
WATER GAS PROCESSES
YIELDS