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Preparation method of high-performance alumina material, alumina material and application thereof
The invention discloses a preparation method of a high-performance aluminum oxide material, the aluminum oxide material and application of the aluminum oxide material. The preparation method comprises the following steps: (1) dipping a pretreated aluminum oxide matrix into an aluminum-based inorganic salt solution; and (2) roasting the impregnated alumina matrix at a high temperature to obtain the high-performance alumina material. The preparation method comprises the following steps: pretreating an aluminum oxide matrix raw material, removing impurities on the surface and in pores of the matrix, then dipping the matrix in an aluminum-based inorganic salt solution to make aluminum ions fill up atomic vacancies in the matrix, and then roasting to convert the aluminum-based inorganic salt infiltrated into the pores of the matrix into an aluminum-based oxide to fill the pores, so as to prepare the aluminum-based composite material. The obtained alumina material is increased in compactness and obviously improved in mechanical strength, meanwhile, small alumina particles are formed on the surface of the alumina material, physical isolation is formed among active sites, and reduction of catalyst performance caused by aggregation of noble metal particles at high temperature is reduced.
本发明公开了一种高性能氧化铝材料的制备方法、氧化铝材料及其应用，所述制备方法包括：(1)将经过预处理的氧化铝基体浸渍于铝基无机盐溶液中；(2)将浸渍后的氧化铝基体在高温下焙烧，得到高性能氧化铝材料。本发明中对氧化铝基体原料进行预处理，清除基体表面和孔道中的杂质，然后将其浸渍于铝基无机盐溶液中，使铝离子填补基体中的原子空位，再通过焙烧将渗透到基体孔道中的铝基无机盐转变成铝基氧化物，填充孔道，使得到的氧化铝材料密实程度增加、机械强度明显提高，同时，通过在氧化铝材料表面形成小的氧化铝颗粒，在活性位点间形成物理隔离，减小高温下因为贵金属颗粒的聚集导致的催化剂性能降低。
Preparation method of high-performance alumina material, alumina material and application thereof
The invention discloses a preparation method of a high-performance aluminum oxide material, the aluminum oxide material and application of the aluminum oxide material. The preparation method comprises the following steps: (1) dipping a pretreated aluminum oxide matrix into an aluminum-based inorganic salt solution; and (2) roasting the impregnated alumina matrix at a high temperature to obtain the high-performance alumina material. The preparation method comprises the following steps: pretreating an aluminum oxide matrix raw material, removing impurities on the surface and in pores of the matrix, then dipping the matrix in an aluminum-based inorganic salt solution to make aluminum ions fill up atomic vacancies in the matrix, and then roasting to convert the aluminum-based inorganic salt infiltrated into the pores of the matrix into an aluminum-based oxide to fill the pores, so as to prepare the aluminum-based composite material. The obtained alumina material is increased in compactness and obviously improved in mechanical strength, meanwhile, small alumina particles are formed on the surface of the alumina material, physical isolation is formed among active sites, and reduction of catalyst performance caused by aggregation of noble metal particles at high temperature is reduced.
本发明公开了一种高性能氧化铝材料的制备方法、氧化铝材料及其应用，所述制备方法包括：(1)将经过预处理的氧化铝基体浸渍于铝基无机盐溶液中；(2)将浸渍后的氧化铝基体在高温下焙烧，得到高性能氧化铝材料。本发明中对氧化铝基体原料进行预处理，清除基体表面和孔道中的杂质，然后将其浸渍于铝基无机盐溶液中，使铝离子填补基体中的原子空位，再通过焙烧将渗透到基体孔道中的铝基无机盐转变成铝基氧化物，填充孔道，使得到的氧化铝材料密实程度增加、机械强度明显提高，同时，通过在氧化铝材料表面形成小的氧化铝颗粒，在活性位点间形成物理隔离，减小高温下因为贵金属颗粒的聚集导致的催化剂性能降低。
Preparation method of high-performance alumina material, alumina material and application thereof
一种高性能氧化铝材料的制备方法、氧化铝材料及其应用
CHEN ZHIQIANG (author) / LUO YUHONG (author) / LIU MENGRAN (author) / LIANG JINGHUA (author) / WANG QING (author) / DONG XIAOTIAN (author) / LEI YONG (author)
2023-12-29
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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