Manufacturing method of porous silica having high surface area under room temperature reaction

• Main Authors: BAE JAE YOUNG, LEE JONG TAK, KIM MIN KYOUNG
• Format: Patent
• Language: English; Korean
• Published: 03.07.2023
• Subjects: CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS

The present invention provides a method of manufacturing porous silica having a high specific surface area under room temperature reaction. The method comprises: a step (a) of adding a sodium silicate solution as a silica precursor to distilled water and stirring the sodium silicate solution and the distilled water; a step (b) of adding a surfactant to the sodium silicate solution formed in the step (a) and stirring the surfactant and sodium silicate solution; a step (c) of adding an acidic solution to the surfactant-added solution formed in the step (b) and stirring the acidic solution and surfactant-added solution to adjust pH; and a step (d) of synthesizing porous silica through room temperature reaction, filtration, and then a washing step for a predetermined period of time. 본 발명은, (a) 증류수에 실리카 전구체로 물유리(sodium silicate solution)를 첨가하여 교반하는 단계; (b) 상기 (a) 단계에서 형성한 물유리 용액에 계면활성제를 첨가하고 교반하는 단계; (c) 상기 (b) 단계에서 형성한 계면활성제 첨가 용액에 산성용액을 첨가하고 교반하여 PH 조절하는 단계; 및 (d) 소정시간 동안 상온 반응과 여과 후 세척단계를 거쳐 다공성 실리카를 합성하는 단계를 포함하는 다공성 실리카 제조방법 및 이를 통해 제조된 다공성 실리카를 제공한다.