Preparation of a mesoporous silicon boron nitride via a non-aqueous sol–gel route

A silicon boron imide based gel Si3B(NH)x(NH2)y(NMe2)z was prepared via catalytic ammonolysis of tris[tris(dimethylamino)silylamino]boron B[HNSi[N(CH3)2]3]3; pyrolysis of the gel under ammonia at 1,000 degrees C gives a mesoporous silicon boron nitride with high surface area and narrow pore size distribution.