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A platform for research: civil engineering, architecture and urbanism
Preparation method of mesoporous alumina balls with high specific surface area
The invention belongs to the technical field of preparation of alumina balls, and particularly relates to a preparation method of mesoporous alumina balls with high specific surface area. The method comprises the steps of: spraying a sodium lignin sulfonate solution into a balling disc containing ball seeds, adding rho-aluminum oxide quick-release powder for balling while the balling disc continuously rotates, and sieving the balls after balling is completed; aging the prepared alumina balls at 50-100 DEG C for 12-48 hours, and then drying the alumina balls at 100-150 DEG C for 1-6 hours; and finally, roasting the alumina balls in a nitrogen atmosphere to obtain mesoporous alumina balls with high specific surface area. The preparation method of the mesoporous alumina balls with high specific surface area is simple to operate, easy to implement, low in drying temperature and low in equipment requirement, aging conditions are easy to reach, only one-time roasting is carried out in a nitrogen atmosphere, heating in an oxygen atmosphere is not needed, and the preparation method is suitable for industrial popularization and production.
本发明属于氧化铝球制备技术领域，具体的涉及一种具有介孔的高比表面积氧化铝球的制备方法。向盛有球种的成球盘内喷洒木质素磺酸钠溶液，成球盘不断旋转的同时添加ρ‑氧化铝快脱粉成球，成球完成后，将球粒过筛；将上述制备得到的氧化铝球首先于50‑100℃老化12‑48h，然后在100‑150℃干燥1‑6h；最后在氮气气氛下焙烧，制备得到具有介孔的高比表面积氧化铝球。本发明所述的具有介孔的高比表面积氧化铝球的制备方法，操作简单，易实现，老化条件易于达到，干燥温度低，只在氮气气氛下一次焙烧，不需要氧气气氛下加热，设备要求低，易于产业化推广生产。
Preparation method of mesoporous alumina balls with high specific surface area
The invention belongs to the technical field of preparation of alumina balls, and particularly relates to a preparation method of mesoporous alumina balls with high specific surface area. The method comprises the steps of: spraying a sodium lignin sulfonate solution into a balling disc containing ball seeds, adding rho-aluminum oxide quick-release powder for balling while the balling disc continuously rotates, and sieving the balls after balling is completed; aging the prepared alumina balls at 50-100 DEG C for 12-48 hours, and then drying the alumina balls at 100-150 DEG C for 1-6 hours; and finally, roasting the alumina balls in a nitrogen atmosphere to obtain mesoporous alumina balls with high specific surface area. The preparation method of the mesoporous alumina balls with high specific surface area is simple to operate, easy to implement, low in drying temperature and low in equipment requirement, aging conditions are easy to reach, only one-time roasting is carried out in a nitrogen atmosphere, heating in an oxygen atmosphere is not needed, and the preparation method is suitable for industrial popularization and production.
本发明属于氧化铝球制备技术领域，具体的涉及一种具有介孔的高比表面积氧化铝球的制备方法。向盛有球种的成球盘内喷洒木质素磺酸钠溶液，成球盘不断旋转的同时添加ρ‑氧化铝快脱粉成球，成球完成后，将球粒过筛；将上述制备得到的氧化铝球首先于50‑100℃老化12‑48h，然后在100‑150℃干燥1‑6h；最后在氮气气氛下焙烧，制备得到具有介孔的高比表面积氧化铝球。本发明所述的具有介孔的高比表面积氧化铝球的制备方法，操作简单，易实现，老化条件易于达到，干燥温度低，只在氮气气氛下一次焙烧，不需要氧气气氛下加热，设备要求低，易于产业化推广生产。
Preparation method of mesoporous alumina balls with high specific surface area
具有介孔的高比表面积氧化铝球的制备方法
YU RUJUN (author) / WANG ZEYAO (author) / PENG CHENG (author) / SHI LINLIN (author) / YAO FENGHAO (author) / CHEN YANYAN (author) / SHAN SHUFENG (author)
2021-11-30
Patent
Electronic Resource
Chinese