Synthesis and characterization of fibrous nickel hydroxide obtained from spent nickel catalyst

P. Patnaik; A. Biswal; B.C. Tripathy; S. Pradhan; B. Dash; R. Sakthivel; T. Subbaiah

doi:10.1016/S1003-6326(13)62823-X

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Synthesis and characterization of fibrous nickel hydroxide obtained from spent nickel catalyst

Journal article

Peer reviewed

Synthesis and characterization of fibrous nickel hydroxide obtained from spent nickel catalyst

P. Patnaik, A. Biswal, B.C. Tripathy, S. Pradhan, B. Dash, R. Sakthivel and T. Subbaiah

Transactions of Nonferrous Metals Society of China, Vol.23(10), pp.2977-2983

2013

DOI: https://doi.org/10.1016/S1003-6326(13)62823-X

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Abstract

The recovery of nickel from spent nickel catalyst for the preparation of nickel hydroxide was studied. Nickel was extracted from the spent catalyst by acid leaching with 1 mol/L sulfuric acid at 90 C. Purified nickel solution was used in the preparation of nickel hydroxide. Three different methods, namely urea hydrolysis, conventional, and hydrothermal methods, of precipitation using NaOH were employed to get various nickel hydroxides samples named as Ni(OH) 2-U, Ni(OH)2-C, and Ni(OH)2-H, respectively. Hydrothermal treatment induced better crystallinity in the Ni(OH)2 compared with conventional method. Both Ni(OH)2-C and Ni(OH) 2-H samples have mixed phases of β-Ni(OH)2 and α*-Ni(OH)2·0.75H2O phases, whereas Ni(OH)2-U has only α*-Ni(OH) 2·0.75H2O. TEM image of Ni(OH)2-U sample shows rod-like Ni(OH)2 structures. Among all, Ni(OH)2-U shows the best electrochemical activity.

Details

Title: Synthesis and characterization of fibrous nickel hydroxide obtained from spent nickel catalyst
Authors/Creators: P. Patnaik (Author/Creator) - Academy of Scientific and Innovative Research
A. Biswal (Author/Creator) - Academy of Scientific and Innovative Research
B.C. Tripathy (Author/Creator) - Academy of Scientific and Innovative Research
S. Pradhan (Author/Creator) - Institute of Minerals and Materials Technology
B. Dash (Author/Creator) - Institute of Minerals and Materials Technology
R. Sakthivel (Author/Creator) - Institute of Minerals and Materials Technology
T. Subbaiah (Author/Creator) - Academy of Scientific and Innovative Research
Publication Details: Transactions of Nonferrous Metals Society of China, Vol.23(10), pp.2977-2983
Publisher: Nonferrous Metals Society of China
Identifiers: 991005543188607891
Murdoch Affiliation: Murdoch University
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration
Citation topics: 2 Chemistry; 2.62 Electrochemistry; 2.62.52 Electrode Materials
Web Of Science research areas: Metallurgy & Metallurgical Engineering
ESI research areas: Materials Science