METHOD FOR PREPARING POROUS SILICA HAVING HIGH SPECIFIC SURFACE AREA THROUGH ROOM-TEMPERATURE REACTION

The present invention provides a method for preparing porous silica and porous silica prepared thereby, the method comprising: (a) adding, to distilled water, water glass (sodium silicate solution) as a silica precursor, followed by stirring; (b) adding a surfactant to a water glass solution formed...

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Bibliographic Details
Main Authors LEE, Jong Tak, BAE, Jae Young, KIM, Min Kyoung
Format Patent
LanguageEnglish
French
Korean
Published 29.06.2023
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Summary:The present invention provides a method for preparing porous silica and porous silica prepared thereby, the method comprising: (a) adding, to distilled water, water glass (sodium silicate solution) as a silica precursor, followed by stirring; (b) adding a surfactant to a water glass solution formed in step (a), followed by stirring; (c) adding an acidic solution to a surfactant-added solution formed in step (b), followed by stirring, to adjust pH; and (d) performing a room-temperature reaction for a predetermined time, filtration, and then washing, thereby synthesizing porous silica. La présente invention concerne un procédé de préparation de silice poreuse et une silice poreuse préparée par ce procédé, le procédé consistant : (a) à ajouter, à de l'eau distillée, du verre soluble (solution de silicate de sodium) en tant que précurseur de silice, puis à agiter ; (b) à ajouter un tensioactif à une solution de verre soluble formée à l'étape (a), puis à agiter ; (c) à ajouter une solution acide à une solution à tensioactif ajouté formée à l'étape (b), puis à agiter, pour ajuster le pH ; et (d) à effectuer une réaction à température ambiante pendant une durée prédéterminée, une filtration, puis un lavage, ce qui permet de synthétiser de la silice poreuse. 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.
Bibliography:Application Number: WO2022KR15537