Kinetics of sulfur transfer from H2S to Fe1-xS

作者: V.K. Pareek , T.A. Ramanarayanan , J.D. Mumford

DOI: 10.1023/A:1019091107183

关键词:

摘要: The rate of sulfur transfer across the gas/solid interface involving H2S(g) and Fe1-xS surface has been investigated using resistance relaxation measurements at 600°C. oxidation reaction incorporating into found to decrease with activity (aS) in sample as (aS)-2/3, while reduction corresponding loss is increase (aS)1/3. kinetic finding combined appropriate defect models for FeS identify limiting step from H2S FeS. Accordingly, identified be: + 2e-\rightleftharpoons S2-(ad) H2(g).

参考文章(8)
H.J Grabke, Adsorption, segregation and reactions of non-metal atoms on iron surfaces Materials Science and Engineering. ,vol. 42, pp. 91- 99 ,(1980) , 10.1016/0025-5416(80)90016-6
Haruo Kobayashi, Carl Wagner, Investigations on the Reduction of Silver Sulfide and Cuprous Sulfide by Hydrogen The Journal of Chemical Physics. ,vol. 26, pp. 1609- 1614 ,(1957) , 10.1063/1.1743593
V. K. Pareek, T. A. Ramanarayanan, J. D. Mumford, A. Ozeckcin, Kinetics of sulfur transfer from H2S to digenite (Cu2-xS) at 500°C Catalysis Letters. ,vol. 27, pp. 11- 25 ,(1994) , 10.1007/BF00806973
E. M. Fryt, V. S. Bhide, W. W. Smeltzer, J. S. Kirkaldy, Growth of the Iron Sulfide ( Fe1 − δ S ) Scale on Iron at Temperatures 600°–1000°C Journal of The Electrochemical Society. ,vol. 126, pp. 683- 688 ,(1979) , 10.1149/1.2129109
E. M. Fryt, W. W. Smeltzer, J. S. Kirkaldy, Chemical Diffusion and Point Defect Properties of Iron Sulfide ( Fe1 − δ S ) at Temperatures 600°–1000°C Journal of The Electrochemical Society. ,vol. 126, pp. 673- 683 ,(1979) , 10.1149/1.2129108
J. Oudar, Sulphur-metal interactions Materials Science and Engineering. ,vol. 42, pp. 101- 109 ,(1980) , 10.1016/0025-5416(80)90017-8
F. A. Kröger, Norman H. Nachtrieb, The chemistry of imperfect crystals ,(1973)
V. K. Pareek, T. A. Ramanarayanan, J. D. Mumford, Kinetics of Sulfur Transfer from H2S to Alpha-Ag2+xS Journal of The Electrochemical Society. ,vol. 142, pp. 1784- 1788 ,(1995) , 10.1149/1.2044194