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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.115  No.1348 (December) (2007)  >  pp.929-933

Journal of the Ceramic Society of Japan
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Synthesis of Iron Group Metal Sulfides from the Elements under Hydrothermal Condition

Keitaro TEZUKA1), Hirokatsu TAKAGI1), Ryoko KURIHARA1), Yue Jin SHAN1) and Hideo IMOTO1)
1) Department of Applied Chemistry, Faculty of Engineering, Utsunomiya University

  Iron group metal sulfides were synthesized from the elements under hydrothermal condition. For nickel sulfides, two kinds of nickel metal powder, coarse powder passed through 63 μm mesh and fine powder passed through 3 μm mesh, were used as the starting materials. The reaction with the coarse Ni powder gave NiS with appreciable amount of Ni, Ni3S2, and Ni9S8. Pure NiS was obtained by the reaction with the fine Ni powder at 240°C for 10 h. The lowest nickel sulfide Ni3S2 was obtained as a single phase product of the reaction if the coarse Ni powder was used. From these results, the fine and coarse powders were found to be suitable for the syntheses of NiS and Ni3S2, respectively. The lowest cobalt sulfide Co9S8 was obtained almost as a single phase though the XRD pattern of the product showed some unidentified peaks. Pure Co9S8 was obtained by washing the reaction product with HNO3. In the Fe-S system, FeS was obtained with a small amount of Fe3O4.

Hydrothermal synthesis, Iron, Cobalt, Nickel, Sulfide

Received: August 29, 2007
Accepted: November 15, 2007 , Published online: December 01, 2007
Copyright (c) 2007 The Ceramic Society of Japan



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