Polymetallic Alkoxides - Precursors for Ceramics

Author:

Mehrotra Ram C.

Abstract

ABSTRACTBeginning with the work of Dislich, metal alkoxides have been increasingly used for the preparation of oxide-ceramics by the ‘sol-gel’ process. In spite of higher initial cost of alkoxides, their main advantages are (i)homoge-neous mixing at molecular level in the initial solution; (ii)ease of hydrolysis; and (iii) lower sintering temperatures.Although the formation of new chemical bonds between different alkoxides employed in the starting mixed solution has been envisaged, the actual isolation of a large variety of polymetallic alkoxides in our laboratories has given an entirely new turn to the expectations (e.g., preparation of spinel from magnesium bis-tetraalkoxyaluminates) from this process. Some such possibilities are being presented for synthesis of novel ceramic materials.Reactions of polymetallic alkoxides with water, alcohols andβ-diketones would be discussed to throw light on their hydrolysis process in the presence of other alcohols and chelating ligands.

Publisher

Springer Science and Business Media LLC

Subject

General Engineering

Cited by 19 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Recent Trends in Metal Alkoxide Chemistry;Progress in Inorganic Chemistry;2007-03-09

2. Sol-gel Processing;Handbook of Nanophase and Nanostructured Materials;2003

3. Heterometallic Alkoxides;Alkoxo and Aryloxo Derivatives of Metals;2001

4. Protection of NdFeB magnets by ultra-thin sol–gel derived films;Journal of Materials Processing Technology;1999-08

5. Synthesis and Characteristics of Complex Multicomponent Oxides Prepared by Polymer Complex Method;Bulletin of the Chemical Society of Japan;1999-07

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