Direct synthesis of nickel powders from NiO slurry by hydrothermal hydrogen reduction process

被引：11

作者：

Ahn, Jong-Gwan ^{[2
]}

Hai, Hoang Tri ^{[1
]}

Kim, Dong-Jin ^{[2
]}

Park, Je-Shin ^{[2
]}

Kim, Sang-Bae ^{[2
]}

机构：

[1] Tohoku Univ, Dept Elect Engn, Sendai, Miyagi 9808576, Japan

[2] Korea Inst Geosci & Mineral Resources, Mineral Resources Res Div, Taejon 305350, South Korea

来源：

HYDROMETALLURGY | 2010年 / 102卷 / 1-4期

关键词：

Nickel powder; Hydrogen reduction; Nickel oxide slurry; Acidic solution; Nickel sulfate; HYDROXIDE SLURRIES;

D O I：

10.1016/j.hydromet.2010.02.005

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

High purity nickel powder (99.5% Ni) was prepared by direct hydrogen reduction of commercial NiO in an acidic slurry in an autoclave with a yield of approximately 100% at 250 degrees C, initial pH 5.4 and 300 psi partial hydrogen pressure. It was found that the initial pH of the solution and the addition of NiSO4 play critical roles in the NiO/Ni powder conversion process. They provide an adequate acidic media and a source of SO42- counter ions for dissolving NiO into Ni2+ ions, while the subsequent reduction of Ni2+ ions to metallic nickel proceeds. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：101 / 104

页数：4

共 15 条

[1] A comprehensive review on the hydro metallurgical process for the production of nickel and copper powders by hydrogen reduction [J].

Agrawal, A ;

Kumar, V ;

Pandey, BD ;

Sahu, KK .

MATERIALS RESEARCH BULLETIN, 2006, 41 (04) :879-892

[2] Effects of small MoO3 additions on the properties of nickel catalysts for the steam reforming of hydrocarbons [J].

Borowiecki, T ;

Golebiowski, A ;

Stasinska, B .

APPLIED CATALYSIS A-GENERAL, 1997, 153 (1-2) :141-156

[3] THE STRUCTURE AND PROPERTIES OF A NICKEL-BASE SUPERALLOY PRODUCED BY OSPREY ATOMIZATION-DEPOSITION [J].

BRICKNELL, RH .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1986, 17 (04) :583-591

[4]

Burkin A. R., 1987, EXTRACTIVE METALLURG

[5] HOMOGENEOUS AND HETEROGENEOUS NUCLEATIONS IN THE POLYOL PROCESS FOR THE PREPARATION OF MICRON AND SUB-MICRON SIZE METAL PARTICLES [J].

FIEVET, F ;

LAGIER, JP ;

BLIN, B ;

BEAUDOIN, B ;

FIGLARZ, M .

SOLID STATE IONICS, 1989, 32-3 :198-205

[6]

Fievet F., 1989, M RS Bulletin, V74, P29, DOI [10.1557/S0883769400060930, DOI 10.1557/S0883769400060930]

[7]

KISHER H, 1995, NANOSTRUCT MATER, V6, P925

[8]

Kutty T. R. N., 1982, Materials Letters, V1, P67, DOI 10.1016/0167-577X(82)90009-X

[9]

Pourbaix M., 1974, Atlas of Electrochemical Equilibria in Aqueous Solutions, V2nd

[10] A study of a nickel hydroxide sulphate precipitate obtained during hydrogen reduction of nickel hydroxide slurries [J].

Saarinen, T ;

Lindfors, LE ;

Fugleberg, S .

HYDROMETALLURGY, 1996, 43 (1-3) :129-142

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