公开(公告)号：KR101157373B1

公开(公告)日：2012-06-21

申请号：KR1020110044540

申请日：2011-05-12

Applicant: 충남대학교산학협력단

Inventor： 성용주 ,  정대수 ,  박승빈 ,  송동수

IPC: C01B33/023 ,  C01B33/037 ,  B09B3/00

CPC classification number: C01B33/023 ,  C01B33/126

Abstract: PURPOSE: A method for synthesizing rice husk derived porous silica and silicon of high purity is provided to keep the porous structure of initial silica by reducing silica at relatively low temperatures to obtain silicon. CONSTITUTION: A quinine-based catalyst is added to digest rice husks or rice straws. The digested product is separated into digested residues and a digested solution. Silica is precipitated from the separated digested solution. The silica is refined. Metallic powder is added into the silica to be reduced in order to obtain silicon. During the digesting process, the rice husks or the rick straws is mixed with an alkali solution at the weight ratio of 1:3-20 under pH 9-11. The mixture is digested at 100-200 degrees Celsius for 30 to 140 minutes.

Abstract translation: 目的：提供一种高纯度稻壳多孔二氧化硅和硅的合成方法，通过在较低温度下还原二氧化硅来保持初始二氧化硅的多孔结构，得到硅。 构成：添加奎宁类催化剂来消化稻壳或稻草。 将消化的产物分离成消化的残留物和消化液。 二氧化硅从分离的消化溶液中沉淀出来。 二氧化硅精制。 将金属粉末加入待还原的二氧化硅中以获得硅。 在消化过程中，将稻壳或ick草与碱溶液以重量比1：3-20在pH 9-11下混合。 将混合物在100-200摄氏度下消化30至140分钟。