Process for manufacturing silicon-containing materials in a cascade reactor system

Process for producing silicon-containing materials, comprising:

• wherein the silicon-containing materials are produced by thermal decomposition of one or more silicon precursors in the presence of one or more porous particles, wherein an amount of silicon is deposited in pores and on the surface of the one or more porous particles, in a cascade reactor system comprising a plurality of reactors;
• and
• wherein the process comprises at least the following Phases 1 to 7:
• Phase 1:
• filling at least a portion of a reactor A with the one or more porous particles and pretreating the one or more porous particles,
• Phase 2:
• transferring the pretreated one or more porous particles into a reactor B and charging the reactor B with a reactive component comprising at least one silicon precursor,
• Phase 3:
• heating the reactor B to a target temperature, at which the silicon precursor begins to decompose in the reactor B,
• Phase 4:
• decomposing the silicon precursor, with deposition of silicon in pores and on the surface of the one or more porous particles, with formation of the silicon- containing materials and with a pressure within the reactor B increasing to at least 7 bar,
• Phase 5:
• cooling the reactor B,
• Phase 6:
• removing gaseous reaction products, formed in the course of the deposition, from the reactor B and transferring the silicon-containing materials into a reactor C, and
• Phase 7:
• withdrawing the silicon-containing materials from the reactor C.