Low-temperature, sulfur-tolerant homogeneous catalysts for the water-gas shift reaction
Coal gasification in conjunction with the water-gas shift reaction represents a significant resource for the production of hydrogen, a gas of considerable industrial value. Current industrial water-gas shift reaction (WGSR) processes are operated in two stages: a high temperature shift (HTS) stage operating at about 350{degree}C over sulfur-tolerant catalysts, followed by a low temperature shift (LTS) stage operating at about 250{degree}C over a sulfur-intolerant catalyst. Several reports in the literature suggest that homogeneous catalysis of WGS is highly active at LT and sulfur-tolerant. Catalysts active at temperatures as low as 60{degree}C are reported to remain active in the presence of large sulfur concentrations. However, these studies were conducted in batch reactors with activities measured far from equilibrium. Those conditions are very different from industrial conditions of continuous operation close to equilibrium. The purpose of this project was to evaluate these homogeneous WGS catalysts under more industrially relevant conditions and to preliminarily compare the economics of a process based on high-activity, LT, sulfur-tolerant, homogeneous WGS catalysts to a process based on current industrial practice. Several transition element catalysts were screened. 98 refs., 11 figs., 23 tabs.
- Research Organization:
- SRI International, Menlo Park, CA (USA)
- Sponsoring Organization:
- DOE/FE
- DOE Contract Number:
- AC21-85MC22065
- OSTI ID:
- 7159102
- Report Number(s):
- DOE/MC/22065-2809; ON: DE90000441
- Country of Publication:
- United States
- Language:
- English
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Low temperature, sulfur tolerant homogeneous catalysts for the water-gas shift reaction. Task 1, Topical report No. 1
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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
CARBONYLS
CATALYSIS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL GASIFICATION
COMPLEXES
COST
DEACTIVATION
DOCUMENT TYPES
ECONOMICS
ELEMENTS
GASIFICATION
HOMOGENEOUS CATALYSIS
HYDROGEN PRODUCTION
IRON
KINETICS
METALS
METHANATION
MOLYBDENUM
NONMETALS
PROGRESS REPORT
PROMOTERS
REACTION INTERMEDIATES
REACTION KINETICS
RHODIUM COMPLEXES
RUTHENIUM COMPLEXES
SCREENING
SHIFT PROCESSES
SULFUR
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENTS