Convenient Route for the Synthesis of Transition-Metal Pnictides by Direct Reduction of Phosphate, Arsenate, and Antimonate Precursors
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- 作者：J. Gopalakrishnan ; Sonal Pandey ; and K. Kasthuri Rangan
- 刊名：Chemistry of Materials
- 出版年：1997
- 出版时间：October 1997
- 年：1997
- 卷：9
- 期：10
- 页码：2113 - 2116
- 全文大小：95K
- 年卷期：v.9,no.10(October 1997)
- ISSN：1520-5002
文摘
Several transition-metal phosphates, arsenates, and antimonatesundergo direct reductionin hydrogen at relatively low temperatures (400-1050 
C) to thecorresponding phosphides,arsenides, and antimonides, providing a convenient route for thesynthesis of transition-metal pnictides. We have synthesized by this route a variety ofbinary transition-metalphosphides (MoP, WP, Fe2P, Ni2P, FeP, RuP),arsenides (NiAs, CoAs), and antimonides(NiSb2, CoSb3). We could not howeversynthesize pnictides of manganese, vanadium, andgallium by this route, suggesting that the method is applicable only tothose metals thatare less electropositive than hydrogen, that is, those metals whosebinary oxides are reducibleby hydrogen to the metallic state.
C) to thecorresponding phosphides,arsenides, and antimonides, providing a convenient route for thesynthesis of transition-metal pnictides. We have synthesized by this route a variety ofbinary transition-metalphosphides (MoP, WP, Fe2P, Ni2P, FeP, RuP),arsenides (NiAs, CoAs), and antimonides(NiSb2, CoSb3). We could not howeversynthesize pnictides of manganese, vanadium, andgallium by this route, suggesting that the method is applicable only tothose metals thatare less electropositive than hydrogen, that is, those metals whosebinary oxides are reducibleby hydrogen to the metallic state.