Sol–gel preparation of low oxygen content, high surface area silicon nitride and imidonitride materials. Issue 13 (2nd March 2016)

• Record Type: Journal Article
• Authors: Sardar, Kripasindhu; Bounds, Richard; Carravetta, Marina; Cutts, Geoffrey; Hargreaves, Justin S. J.; Hector, Andrew L.; Hriljac, Joseph A.; Levason, William; Wilson, Felix
• Is Part Of: Dalton transactions. Volume 45:Issue 13(2016)
• Page Start: 5765
• Page End: 5774
• Publication Date: 2016-03-02
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c5dt04961j
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : Low oxygen silicon imidonitride samples are produced from Si(NHMe)4 and NH3 with NH4 OTf catalyst and structurally characterised. 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-Si3 N4 and structural similarities are observed between the amorphous and crystallised materials.