Method for preparing SiO2 by reusing biomass resources

• Main Authors: TANG HANJUN, GUO JINQI, TAO XIANGLIN, PANG MIN, LIANG JUEQIN, WU YUEHUI
• Format: Patent
• Language: Chinese; English
• Published: 04.01.2017
• Subjects: CHEMISTRY; COMPOUNDS THEREOF; INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OFSOLID INORGANIC COMPOUNDS; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS

The method discloses a method for preparing SiO2 by reusing biomass resources. The method comprises the following steps: (1) removing metal elements: placing biomass materials in a dilute acid solution to be extracted, and then carrying out filtration and separation to obtain biomass and water extract; (2) preparing SiO2: rinsing and drying the biomass and then carrying out complete combustion, thus obtaining a noncrystalline SiO2 product. The method disclosed by the invention can efficiently remove the metal elements of the biomass resources of chaff, straw and the like, and the high-purity noncrystalline SiO2 is prepared, so that efficient and safe utilization of the biomass resources is realized. 本发明公开了种生物质资源再利用制备SiO的方法，包括以下步骤：（1）金属元素去除：将生物质材料置于稀酸溶液中浸提，然后过滤分离，得到生物质和浸提液；（2）SiO的制备：将生物质进行漂洗、烘干，然后完全燃烧，得到非结晶的SiO产品。本发明的方法可高效去除谷壳、秸秆类等生物质资源的金属元素，制备出高纯度非结晶SiO，实现生物质资源的高效安全利用。