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

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

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

Abstract

Abstract: Several transition-metal phosphates, arsenates, and antimonates undergo direct reduction in hydrogen at relatively low temperatures (400-1050 degrees 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: Journal Article
Additional Information: Copyright of this article belongs to American Chemical Society.
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Depositing User: Mr. S Muthuraja
Date Deposited: 12 Mar 2009 05:15
Last Modified: 19 Sep 2010 05:25
URI: http://eprints.iisc.ac.in/id/eprint/18760

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