Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Aluminum oxide/aerogel composite porous material and preparation method thereof
The invention discloses an aluminum oxide/aerogel composite porous material and a preparation method thereof. The preparation method of the aluminum oxide/aerogel composite porous material comprises the steps: mixing pseudo-boehmite and aluminum fluoride, carrying out ball milling, drying to obtain mixed powder, mixing the mixed powder and a polyvinyl alcohol aqueous solution to obtain granulation powder, placing the granulation powder in a mold, carrying out compression molding, demolding to obtain a green body, sintering the green body, heating to 1000-1500 DEG C, and sintering for 1-3 hours to obtain a matrix; and dipping the matrix 1-5 times to obtain thealuminum oxide/aerogel composite porous material. According to the invention, the aluminum oxide material with the porous sheet-shaped interlocking structure is prepared by adopting a tabletting forming method, the aluminum-silicon composite aerogel is introduced into the aluminum oxide material with the porous sheet-shaped interlocking structure by adopting a sol impregnation method, and in the material preparation process, used equipment is simple and safe, the raw material cost is low, the preparation process is stable and operation steps are simple; and the porosity of the obtained finished product can reach 60-70% at most, and the specific surface area can reach 10-40 m<2>/g.
本发明公开了一种氧化铝/气凝胶复合多孔材料及其制备方法，氧化铝/气凝胶复合多孔材料的制备方法包括：将拟薄水铝石和氟化铝混合后球磨，烘干，得到混合粉体，将混合粉体与聚乙烯醇水溶液混合，得到造粒粉料，将造粒粉料置于模具中压制成型，脱模后获得坯体，将坯体烧结，再升温至1000～1500℃烧结1～3h，得到基体；对基体采用浸渍步骤操作1～5次，得到氧化铝/气凝胶复合多孔材料，本发明采用压片成型法制备多孔片状互锁结构氧化铝材料并以溶胶浸渍法将铝硅复合气凝胶引入多孔片状互锁结构氧化铝材料中，材料制备过程中，使用设备简单安全，原料成本低廉，制备工艺稳定，操作步骤简单。所获得成品孔隙率最高可达到60～70％，比表面积可达到10～40m2/g。
Aluminum oxide/aerogel composite porous material and preparation method thereof
The invention discloses an aluminum oxide/aerogel composite porous material and a preparation method thereof. The preparation method of the aluminum oxide/aerogel composite porous material comprises the steps: mixing pseudo-boehmite and aluminum fluoride, carrying out ball milling, drying to obtain mixed powder, mixing the mixed powder and a polyvinyl alcohol aqueous solution to obtain granulation powder, placing the granulation powder in a mold, carrying out compression molding, demolding to obtain a green body, sintering the green body, heating to 1000-1500 DEG C, and sintering for 1-3 hours to obtain a matrix; and dipping the matrix 1-5 times to obtain thealuminum oxide/aerogel composite porous material. According to the invention, the aluminum oxide material with the porous sheet-shaped interlocking structure is prepared by adopting a tabletting forming method, the aluminum-silicon composite aerogel is introduced into the aluminum oxide material with the porous sheet-shaped interlocking structure by adopting a sol impregnation method, and in the material preparation process, used equipment is simple and safe, the raw material cost is low, the preparation process is stable and operation steps are simple; and the porosity of the obtained finished product can reach 60-70% at most, and the specific surface area can reach 10-40 m<2>/g.
本发明公开了一种氧化铝/气凝胶复合多孔材料及其制备方法，氧化铝/气凝胶复合多孔材料的制备方法包括：将拟薄水铝石和氟化铝混合后球磨，烘干，得到混合粉体，将混合粉体与聚乙烯醇水溶液混合，得到造粒粉料，将造粒粉料置于模具中压制成型，脱模后获得坯体，将坯体烧结，再升温至1000～1500℃烧结1～3h，得到基体；对基体采用浸渍步骤操作1～5次，得到氧化铝/气凝胶复合多孔材料，本发明采用压片成型法制备多孔片状互锁结构氧化铝材料并以溶胶浸渍法将铝硅复合气凝胶引入多孔片状互锁结构氧化铝材料中，材料制备过程中，使用设备简单安全，原料成本低廉，制备工艺稳定，操作步骤简单。所获得成品孔隙率最高可达到60～70％，比表面积可达到10～40m2/g。
Aluminum oxide/aerogel composite porous material and preparation method thereof
氧化铝/气凝胶复合多孔材料及其制备方法
LIU SHAN (Autor:in) / JIA HUIJIAO (Autor:in) / MAO ZHIYONG (Autor:in) / WANG DAJIAN (Autor:in)
16.11.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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