An electrochemical Claus process for sulfur recovery

Journal Article · Fri Dec 01 00:00:00 EST 1989 · Journal of the Electrochemical Society; (USA)

DOI:https://doi.org/10.1149/1.2096528· OSTI ID:7227060

Pujare, N U; Tsai, K J; Sammuells, A F ^[1]

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1. Eltron Research, Inc., Aurora, IL (US)

Electrochemical oxidation of H{sub 2}S to give sulfur and water was achieved at 900{degrees}C using fuel cells possessing the general configuration where anode electrocatalysts experimentally investigated for promoting the subject oxidation reaction included WS{sub 2} and the thiospinels CuNi{sub 2}S{sub 4}, CuCo{sub 2}S{sub 4}, CuFe{sub 2}S{sub 4}, and NiFe{sub 2}S{sub 4}. The predominant oxidizable electroactive species present in the fuel cell anode compartment was suggested to be hydrogen originating from the initial thermal dissociation of H{sub 2}S (H{sub 2}S {r reversible} H{sub 2} + 1/2 S{sub 2}) at fuel cell operating temperatures. Rapid anode kinetics were found for the anodic reaction with the empirical trend for exchange currents (i{sub o}) per geometric area being found to be NiFe{sub 2}S{sub 4}{gt}WS{sub 2}{gt}CuCo{sub 2}S{sub 4}{gt}CuFe{sub 2}S{sub 4}{approx equal}NiCo{sub 2}S{sub 4}{gt}CuNi{sub 2}S{sub 4}.

• OSTI ID: 7227060
• Journal Information: Journal of the Electrochemical Society; (USA), Vol. 136:12; ISSN 0013-4651
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
HYDROGEN SULFIDES
OXIDATION
ANODES
CHEMICAL REACTION KINETICS
CLAUS PROCESS
CONFIGURATION
ELECTROCATALYSTS
ELECTROCHEMISTRY
EXPERIMENTAL DATA
FUEL CELLS
MANGANESE OXIDES
PLATINUM OXIDES
STABILIZATION
TUNGSTEN SULFIDES
USES
ZIRCONIUM OXIDES
CATALYSTS
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
DATA
DIRECT ENERGY CONVERTERS
ELECTROCHEMICAL CELLS
ELECTRODES
HYDROGEN COMPOUNDS
INFORMATION
KINETICS
MANGANESE COMPOUNDS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PLATINUM COMPOUNDS
REACTION KINETICS
REFRACTORY METAL COMPOUNDS
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TUNGSTEN COMPOUNDS
ZIRCONIUM COMPOUNDS
300505* - Fuel Cells- Electrochemistry
Mass Transfer & Thermodynamics
300504 - Fuel Cells- Applications
400400 - Electrochemistry
320305 - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Industrial Waste Management