Alumina qhia
Qhib alumina yog tsim los ntawm cua kub thiab dehydrating aluminium hydrate. Nws cov khoom nyob ntawm cov yam ntxwv lub xeev ntawm cov pib hydroxide. Feem ntau, nws tsis yog ntshiab Al2O3, tab sis ib nrab hydrated amorphous ntxeem tau cov khoom tsim qauv, uas tsis tsuas yog amorphous. Cov gel, zoo li lub muaju ntawm hydroxide. Activated alumina tseem hu ua nws cov capillary channel nto nrog kev ua haujlwm siab. Nws muaj qhov sib txuam zoo rau cov dej thiab yog cov adsorbent kom nqus cov dej huv. Hauv qee qhov kev ua haujlwm, nws tuaj yeem qhuav mus rau qhov tob ntawm -70 ° C hauv qab ntawm lub lwg.