AMORPHOUS SILICA, METHOD FOR PRODUCING SAME, AND PRODUCT INCLUDING AMORPHOUS SILICA

Provided are amorphous silica having a specific BET specific surface area and a method for producing the same, etc. Amorphous silica that is aggregated particles in which silica of nanoparticles is aggregated, the particle size (D50) of the aggregated particles being 0.5-50 μm, and the BET specific...

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Main Authors YAMADA Shinichiro, FUJII Sunao, OKUDA Yoshiharu, INATOMI Hiroyuki, AIKAWA Satoko, KITAYAMA Ryuichi, MIZOGUCHI Norihiro, SAEKI Yukinori, KIMURA Kazuhiro
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LanguageEnglish
French
Japanese
Published 14.10.2021
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Abstract Provided are amorphous silica having a specific BET specific surface area and a method for producing the same, etc. Amorphous silica that is aggregated particles in which silica of nanoparticles is aggregated, the particle size (D50) of the aggregated particles being 0.5-50 μm, and the BET specific surface area being 300 m2/g or higher. The amorphous silica can be prepared by carbonizing a pressure molded product of a silica-containing plant, mixing an alkaline solution with the carbide obtained and separating the solids to obtain a silicic acid salt solution, adjusting the solution to a pH of 0.5-2.5 to precipitate the silica, and, after 24 h, washing and drying the silica which has a pH of 0.5-2.5. L'invention concerne une silice amorphe ayant une surface spécifique BET spécifique et son procédé de production, etc. La silice amorphe est formée de particules agrégées dans lesquelles la silice de nanoparticules est agrégée, la taille des particules (D50) des particules agrégées étant comprise entre 0,5 et 50 µm, et la surface spécifique BET étant de 300 m2/g ou plus. La silice amorphe peut être préparée par carbonisation d'un produit moulé sous pression d'une plante contenant de la silice, mélange d'une solution alcaline avec le carbure obtenu et séparation des solides pour obtenir une solution de sel d'acide silicique, ajustement de la solution à un pH de 0,5 à 2,5 pour précipiter la silice, et, après 24 h, le lavage et le séchage de la silice qui a un pH de 0,5 à 2,5. 特定BET比表面積の非晶質シリカおよびその製造方法等を提供する。ナノ粒子のシリカが凝集した凝集粒子であり、前記凝集粒子の粒子径(D50)が0.5~50μm、BET比表面積が300m2/g以上である非晶質シリカである。シリカ含有植物の加圧成型物を炭化し、得られる炭化物にアルカリ溶液を混合および固形物分離してケイ酸塩溶液を得て、これをpH0.5~2.5に調整してシリカを析出させ、24h後pHがpH0.5~2.5であるシリカを洗浄および乾燥して調製することができる。
AbstractList Provided are amorphous silica having a specific BET specific surface area and a method for producing the same, etc. Amorphous silica that is aggregated particles in which silica of nanoparticles is aggregated, the particle size (D50) of the aggregated particles being 0.5-50 μm, and the BET specific surface area being 300 m2/g or higher. The amorphous silica can be prepared by carbonizing a pressure molded product of a silica-containing plant, mixing an alkaline solution with the carbide obtained and separating the solids to obtain a silicic acid salt solution, adjusting the solution to a pH of 0.5-2.5 to precipitate the silica, and, after 24 h, washing and drying the silica which has a pH of 0.5-2.5. L'invention concerne une silice amorphe ayant une surface spécifique BET spécifique et son procédé de production, etc. La silice amorphe est formée de particules agrégées dans lesquelles la silice de nanoparticules est agrégée, la taille des particules (D50) des particules agrégées étant comprise entre 0,5 et 50 µm, et la surface spécifique BET étant de 300 m2/g ou plus. La silice amorphe peut être préparée par carbonisation d'un produit moulé sous pression d'une plante contenant de la silice, mélange d'une solution alcaline avec le carbure obtenu et séparation des solides pour obtenir une solution de sel d'acide silicique, ajustement de la solution à un pH de 0,5 à 2,5 pour précipiter la silice, et, après 24 h, le lavage et le séchage de la silice qui a un pH de 0,5 à 2,5. 特定BET比表面積の非晶質シリカおよびその製造方法等を提供する。ナノ粒子のシリカが凝集した凝集粒子であり、前記凝集粒子の粒子径(D50)が0.5~50μm、BET比表面積が300m2/g以上である非晶質シリカである。シリカ含有植物の加圧成型物を炭化し、得られる炭化物にアルカリ溶液を混合および固形物分離してケイ酸塩溶液を得て、これをpH0.5~2.5に調整してシリカを析出させ、24h後pHがpH0.5~2.5であるシリカを洗浄および乾燥して調製することができる。
Author AIKAWA Satoko
MIZOGUCHI Norihiro
KITAYAMA Ryuichi
YAMADA Shinichiro
FUJII Sunao
INATOMI Hiroyuki
OKUDA Yoshiharu
SAEKI Yukinori
KIMURA Kazuhiro
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– fullname: KITAYAMA Ryuichi
– fullname: MIZOGUCHI Norihiro
– fullname: SAEKI Yukinori
– fullname: KIMURA Kazuhiro
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DocumentTitleAlternate 非晶質シリカ、その製造方法、および非晶質シリカを含む製品
SILICE AMORPHE, SON PROCÉDÉ DE PRODUCTION ET PRODUIT COMPRENANT DE LA SILICE AMORPHE
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RelatedCompanies GOSHU YAKUHIN CO., LTD
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Snippet Provided are amorphous silica having a specific BET specific surface area and a method for producing the same, etc. Amorphous silica that is aggregated...
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COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
Title AMORPHOUS SILICA, METHOD FOR PRODUCING SAME, AND PRODUCT INCLUDING AMORPHOUS SILICA
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