| 摘要 |
PURPOSE:To produce the titled composition having high uniformity and fine particle size of the constituent particles, by charging a decomposable Si compound together with a decomposable Al compound and a C compound into hot gas containing steam, and decomposing the components. CONSTITUTION:A decomposable Si compound of formula I (n is 1-4; X is H, halogen, alkyl, aryl or alkoxy) is charged together with a decomposable Al compound of formula II and a C compound (e.g. toluene) into steam-containing hot gas, and decomposed at >=700 deg.C to produce a mixed aerosol containing the aerosol of Si oxide, Al oxide and elemental carbon. The objective carbon- containing composition can be produced by the solid-gas separation of the mixed aerosol. The composition is calcined at 1,350-1,650 deg.C in a gaseous atmosphere of a nitrogen-containing compound for about 2hr, and if necessary, heated at 500-1,000 deg.C in the presence of oxygen to remove the admixed carbon. The novel sialon can be produced by this process. |
