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Title: An electrochemical Claus process for sulfur recovery

Abstract

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}.

Authors:
; ;  [1]
  1. Eltron Research, Inc., Aurora, IL (US)
Publication Date:
OSTI Identifier:
7227060
Resource Type:
Journal Article
Journal Name:
Journal of the Electrochemical Society; (USA)
Additional Journal Information:
Journal Volume: 136:12; Journal ID: ISSN 0013-4651
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Pujare, N U, Tsai, K J, and Sammuells, A F. An electrochemical Claus process for sulfur recovery. United States: N. p., 1989. Web. doi:10.1149/1.2096528.
Pujare, N U, Tsai, K J, & Sammuells, A F. An electrochemical Claus process for sulfur recovery. United States. https://doi.org/10.1149/1.2096528
Pujare, N U, Tsai, K J, and Sammuells, A F. 1989. "An electrochemical Claus process for sulfur recovery". United States. https://doi.org/10.1149/1.2096528.
@article{osti_7227060,
title = {An electrochemical Claus process for sulfur recovery},
author = {Pujare, N U and Tsai, K J and Sammuells, A F},
abstractNote = {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}.},
doi = {10.1149/1.2096528},
url = {https://www.osti.gov/biblio/7227060}, journal = {Journal of the Electrochemical Society; (USA)},
issn = {0013-4651},
number = ,
volume = 136:12,
place = {United States},
year = {Fri Dec 01 00:00:00 EST 1989},
month = {Fri Dec 01 00:00:00 EST 1989}
}