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Preparation method of kaolin-based mesoporous silica material
The invention relates to the field of mesoporous materials, and in particular relates to a process for preparing a kaolin-based mesoporous silica material by employing a template-free method. A preparation method of the kaolin-based mesoporous silica material is characterized by comprising the following steps: (1) calcinations and activation, namely calcining and activating kaolin to obtain metakaolin; (2) hydrothermal alkali activation, namely activating the metakaolin in a hot solution containing OH<-> and Na<+>; and (3) acid etching, namely etching the metakaolin which is subjected to hydrothermal alkali activation in an acid solution to obtain the kaolin-based mesoporous silica material. The method is low in production cost; and the obtained kaolin-based mesoporous silica material has high specific surface area.
Preparation method of kaolin-based mesoporous silica material
The invention relates to the field of mesoporous materials, and in particular relates to a process for preparing a kaolin-based mesoporous silica material by employing a template-free method. A preparation method of the kaolin-based mesoporous silica material is characterized by comprising the following steps: (1) calcinations and activation, namely calcining and activating kaolin to obtain metakaolin; (2) hydrothermal alkali activation, namely activating the metakaolin in a hot solution containing OH<-> and Na<+>; and (3) acid etching, namely etching the metakaolin which is subjected to hydrothermal alkali activation in an acid solution to obtain the kaolin-based mesoporous silica material. The method is low in production cost; and the obtained kaolin-based mesoporous silica material has high specific surface area.
Preparation method of kaolin-based mesoporous silica material
SHU ZHU (author) / ZHOU JUN (author) / LI TIANTIAN (author) / YU DONGXUE (author) / CHEN YUN (author) / WANG YANXIN (author) / YUAN XIMING (author)
2015-04-29
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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