title: Sol-gel preparation of low oxygen content, high surface area silicon nitride and imidonitride materials.
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.
authors.affiliation: Chemistry, University of Southampton, Southampton SO17 1BJ, UK. a.l.hector@soton.ac.uk.
authors.forename: Kripasindhu
authors.initials: K
authors.lastname: Sardar
authors.forename: Richard
authors.initials: R
authors.lastname: Bounds
authors.forename: Marina
authors.initials: M
authors.lastname: Carravetta
authors.forename: Geoffrey
authors.initials: G
authors.lastname: Cutts
authors.forename: Justin S J
authors.initials: JS
authors.lastname: Hargreaves
authors.forename: Andrew L
authors.initials: AL
authors.lastname: Hector
authors.forename: Joseph A
authors.initials: JA
authors.lastname: Hriljac
authors.forename: William
authors.initials: W
authors.lastname: Levason
authors.forename: Felix
authors.initials: F
authors.lastname: Wilson