Convenient route for the synthesis of transition-metal pnictides by direct reduction of phosphate, arsenate, and antimonate precursors

Gopalakrishnan, J. ; Pandey, Sonal ; Kasthuri Rangan, K. (1997) Convenient route for the synthesis of transition-metal pnictides by direct reduction of phosphate, arsenate, and antimonate precursors Chemistry of Materials, 9 (10). pp. 2113-2116. ISSN 0897-4756

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Official URL: http://pubs.acs.org/doi/abs/10.1021/cm970175g

Related URL: http://dx.doi.org/10.1021/cm970175g

Abstract

Several transition-metal phosphates, arsenates, and antimonates undergo direct reduction in hydrogen at relatively low temperatures (400-1050°C) to the corresponding phosphides, arsenides, and antimonides, providing a convenient route for the synthesis of transition-metal pnictides. We have synthesized by this route a variety of binary transition-metal phosphides (MoP, WP, Fe2P, Ni2P, FeP, RuP), arsenides (NiAs, CoAs), and antimonides (NiSb2, CoSb3). We could not however synthesize pnictides of manganese, vanadium, and gallium by this route, suggesting that the method is applicable only to those metals that are less electropositive than hydrogen, that is, those metals whose binary oxides are reducible by hydrogen to the metallic state.

Item Type:Article
Source:Copyright of this article belongs to American Chemical Society.
ID Code:12852
Deposited On:11 Nov 2010 08:44
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