Sol–gel preparation of low oxygen content, high surface area silicon nitride and imidonitride materials

Kripasindhu Sardar; Richard Bounds; Marina Carravetta; Geoffrey Cutts; Justin S. J. Hargreaves; Andrew L. Hector; Joseph A. Hriljac; William Levason; Felix Wilson

doi:10.1039/C5DT04961J

Sol–gel preparation of low oxygen content, high surface area silicon nitride and imidonitride materials

Kripasindhu Sardar, Richard Bounds, Marina Carravetta, Geoffrey Cutts, Justin S. J. Hargreaves, Andrew L. Hector, Joseph A. Hriljac, William Levason, Felix Wilson

Chemistry

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Abstract

Reactions of Si(NHMe)₄ with ammonia are effectively catalysed by small ammonium triflate concentrations, and can be used to produce free-standing silicon imide gels. Firing at various temperatures produces amorphous or partially crystallised silicon imidonitride/nitride samples with high surface areas and low oxygen contents. The crystalline phase is entirely α-Si₃N₄ and structural similarities are observed between the amorphous and crystallised materials.

Original language	English
Pages (from-to)	5765-5774
Journal	Dalton Transactions
Volume	45
Issue number	13
Early online date	24 Feb 2016
DOIs	https://doi.org/10.1039/C5DT04961J
Publication status	Published - 7 Apr 2016

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abstract = "Reactions of Si(NHMe)4 with ammonia are effectively catalysed by small ammonium triflate concentrations, and can be used to produce free-standing silicon imide gels. Firing at various temperatures produces amorphous or partially crystallised silicon imidonitride/nitride samples with high surface areas and low oxygen contents. The crystalline phase is entirely α-Si3N4 and structural similarities are observed between the amorphous and crystallised materials.",

author = "Kripasindhu Sardar and Richard Bounds and Marina Carravetta and Geoffrey Cutts and Hargreaves, {Justin S. J.} and Hector, {Andrew L.} and Hriljac, {Joseph A.} and William Levason and Felix Wilson",

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AU - Sardar, Kripasindhu

AU - Bounds, Richard

AU - Carravetta, Marina

AU - Cutts, Geoffrey

AU - Hargreaves, Justin S. J.

AU - Hector, Andrew L.

AU - Hriljac, Joseph A.

AU - Levason, William

AU - Wilson, Felix

PY - 2016/4/7

Y1 - 2016/4/7

N2 - Reactions of Si(NHMe)4 with ammonia are effectively catalysed by small ammonium triflate concentrations, and can be used to produce free-standing silicon imide gels. Firing at various temperatures produces amorphous or partially crystallised silicon imidonitride/nitride samples with high surface areas and low oxygen contents. The crystalline phase is entirely α-Si3N4 and structural similarities are observed between the amorphous and crystallised materials.

AB - Reactions of Si(NHMe)4 with ammonia are effectively catalysed by small ammonium triflate concentrations, and can be used to produce free-standing silicon imide gels. Firing at various temperatures produces amorphous or partially crystallised silicon imidonitride/nitride samples with high surface areas and low oxygen contents. The crystalline phase is entirely α-Si3N4 and structural similarities are observed between the amorphous and crystallised materials.

U2 - 10.1039/C5DT04961J

DO - 10.1039/C5DT04961J

M3 - Article

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VL - 45

SP - 5765

EP - 5774

JO - Dalton Transactions

JF - Dalton Transactions

IS - 13

ER -

Sol–gel preparation of low oxygen content, high surface area silicon nitride and imidonitride materials

Abstract

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