公开(公告)号：GB1121279A

公开(公告)日：1968-07-24

申请号：GB5616667

申请日：1965-07-28

Applicant: DEGUSSA

Inventor： BITTNER FRIEDRICH ,  BRUNNER HELMUT ,  SCHUTTE DIETER ,  DIETHER JEAN ,  SCHMITZ FRANZ THEO

IPC: C01B13/22 ,  C01B33/18

Abstract: Finely divided metal or silicon oxides are prepared by the vapour phase hydrolytic reaction of volatile metal or silicon halides in a flame into which the halide is introduced in admixture with oxygen and a gas whose combustion is accompanied by the formation of water, in such proportions that the mixture contains enough oxygen for the complete combustion of the flammable gas whilst the amount of water formed is at least sufficient to hydrolyse the volatile halide, said flame burning in an enclosed reaction zone and being surrounded by a gas inert to the reactions in the flame. In the diagram, the mixture of gases is fed to a burner 11 and the flame 12 burns in a flame tube 13 in an atmosphere of nitrogen supplied by a feed pipe 16 via a gauze 15. The air may be supplied to the burner in two streams, primary air supplied direct and supporting air bearing the metal halide.