Process for manufacturing silicon-containing materials

A process for producing silicon-containing materials, comprising:

• reacting the silicon-containing materials in a fluidized bed reactor by deposition of silicon from at least one silicon precursor in pores and on the surface of porous particles of Geldart class C;
• and
• providing a fluidizing gas stream in the fluidized bed reactor that is fully or partly induced to oscillate in a pulsed manner and propagates in the form of a wave and acts on the fluidized bed so as to form a homogeneously fluidized bed as a pulsed gas stream so as to form a homogeneously fluidized bed having a fluidization index FI of at least 0.95, wherein the pulsation has a frequency of 0.1 to 20 Hz and a pulse duty ratio of 0.1 to 0.9, and wherein the fluidizing gas stream has a superficial velocity which is above a measured minimum fluidization velocity of the pulsed gas stream, where the pulsation is combined with mechanical stirring as a further fluidizing aid.