ISSN:
1573-4889
Keywords:
Reactions
;
Ni+NiSO4
;
Co+CoSO4
;
sulfide formation
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract A differential thermal, thermogravimetric analysis (DTA-TGA) study shows that both nickel and cobalt react with their respective sulfates to form oxide (NiO or CoO) and sulfide (Ni3S2 or Co9S8 and Co4S3). In the case of the Ni+NiSO4 reaction, it is clear that the reaction occurs at T 〈 530°C and may be a solid-state process. A similar process is found for the cobalt+CoSO4 reaction. These reactions are briefly discussed with respect to studies of the oxidation-sulfidation of Co or Ni under conditions which produce the sulfate as a stable phase. It is proposed that the rate-determining step in these studies is the formation of the sulfate.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00656092
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