Reduction or removal of the content of silane from gas, especially waste gas, uses alkaline aqueous solution of sodium hypochlorite and sodium hydroxide, useful for producing precipitated silica or silica sol after reaction

摘要

Reduction or removal of the content of silane from gases, especially waste gases, by contact with a solution containing sodium hypochlorite (NaOCl) uses an alkaline aqueous solution containing NaOCl and aqueous sodium hydroxide (NaOH) solution. Independent claims are also included for (1) Aqueous alkaline NaOCl solution containing NaOH for use in this process, produced by mixing aqueous NaOH solution and aqueous NaOCl solution during or before the reaction, optionally with addition of water; (2) Apparatus with a packed column for operating the process.