Kev siv Activated Alumina hauv Adsorption thiab Catalysis

Activated alumina muaj thaj chaw loj tshwj xeeb, ntau yam ntawm cov qauv pore thiab qhov pore loj faib, thiab cov khoom nplua nuj. Yog li ntawd, nws muaj ntau yam kev siv hauv adsorbents, catalysts thiab catalyst txhawb nqa.

Alumina for adsorbent and catalyst carrier is a fine chemical and also a special chemical. Different uses have different requirements on the physical structure, which is the reason for its strong speciality and many varieties and brands. According to statistics, the amount of alumina used as catalyst and carrier is more than the total amount of catalyst used in molecular sieve, silica gel, activated carbon, diatomaceous earth and silica-alumina. It can be seen that alumina plays a pivotal role in catalysts and supports. Among them, η-Al2O3 and γ-Al2O3 are the most important catalysts and supports. They are both spinel structures with defects. The difference between the two is: The regularity is different (γ>η) and the Al-O bond distance is different (η>, qhov txawv yog 0.05-0.1nm).