Activated av nplaum yog ib qho adsorbent ua los ntawm av nplaum (feem ntau yog bentonite) ua raw khoom, kho nrog inorganic acidification, ntsev los yog lwm txoj kev, thiab ces yaug thiab qhuav nrog dej.Nws muaj cov hmoov dawb dawb zoo li, tsis muaj ntxhiab tsw, tsis muaj ntxhiab, tsis muaj tshuaj lom, thiab muaj zog adsorption kev ua haujlwm.Nws tuaj yeem nqus cov xim thiab cov organic.Nws yog ib qho yooj yim kom nqus noo noo nyob rau hauv cov huab cua, thiab tso nws ntev dhau lawm yuav txo cov adsorption kev ua tau zoo.Thaum siv, nws raug nquahu kom cua sov (zoo dua ntawm 80-100 degrees Celsius) kom rov zoo.Txawm li cas los xij, cua sov siab tshaj 300 degrees Celsius pib poob dej crystalline, ua rau muaj kev hloov pauv thiab cuam tshuam rau cov nyhuv fading.Activated av nplaum yog insoluble nyob rau hauv dej, organic solvents, thiab ntau yam roj, yuav luag tag soluble nyob rau hauv kub caustic soda thiab hydrochloric acid, nrog ib tug txheeb ze ntom ntawm 2.3-2.5, thiab tsawg o nyob rau hauv dej thiab roj.

Cov av nplaum uas tshwm sim ib txwm muaj nrog cov khoom siv tshuaj dawb huv yog cov av nplaum dawb, dawb grey feem ntau yog tsim los ntawm montmorillonite, albite, thiab quartz, thiab yog hom bentonite.

Feem ntau cov khoom ntawm decomposition ntawm glassy volcanic pob zeb, uas tsis nthuav tom qab absorbing dej, thiab pH tus nqi ntawm kev ncua yog txawv ntawm alkaline bentonite;Nws cov bleaching kev ua tau zoo yog phem dua li cov av nplaum activated.Cov xim feem ntau muaj xws li lub teeb daj, ntsuab dawb, grey, txiv ntseej xim, xim av, mis nyuj dawb, txiv duaj liab, xiav, thiab lwm yam. Muaj tsawg heev dawb huv sawv daws yuav.Qhov ceev 2.7-2.9g / cm3Qhov pom tseeb qhov ntom yog feem ntau qis vim nws qhov porosity.Cov tshuaj muaj pes tsawg leeg zoo ib yam li cov av nplaum zoo tib yam, nrog rau cov tshuaj lom neeg tseem ceeb yog aluminium oxide, silicon dioxide, dej, thiab ib qho me me ntawm hlau, magnesium, calcium, thiab lwm yam. Tsis muaj plasticity, muaj peev xwm adsorption siab.Vim nws cov ntsiab lus siab ntawm hydrous silicic acid, nws yog acidic rau litmus.Cov dej yog yooj yim tawg thiab muaj cov ntsiab lus dej siab.Feem ntau, qhov zoo dua qhov zoo, qhov siab dua lub zog decolorization.

Thaum ua qhov kev ntsuam xyuas zoo thaum lub sijhawm tshawb nrhiav, nws yuav tsum ntsuas nws qhov kev ua haujlwm bleaching, acidity, pom kev ua haujlwm, roj nqus, thiab lwm yam khoom.