Patent ID: 9156861
Filing Date: 2015-10-13
Classification: B01J,C07F

Abstract:
1. A method for preparing trialkoxysilane comprising: (a) pulverizing silicon (Si) into fine particles having a size of 30-100 μm in a solvent environment, wherein the solvent is directly used in a later synthesis of alkoxysilane; (b) continuously synthesizing trialkoxysilane by continuously feeding a suspension of silicon and anhydrous alcohol in an amount consumed in a reaction in a synthesis process of trialkoxysilane to a reactor, wherein the amount of consumed suspension is calculated from an amount of synthesized trialkoxysilane using following Equation 1, so that an amount of silicon fed to a reactor as a suspension component, and an amount of silicon after a reaction is completed in a reaction process are maintained the same, thereby feeding a suspension so that a reaction proceeds consistently and stably, wherein, mSi is mass of silicon to feed to a reactor as a suspension component (c) removing impurities accumulated by continuously bleeding a solvent using a ceramic membrane filter.