Bayanin alumina da aka kunna
Alumina da aka kunna, kuma aka sani da kunna bauxite, ana kiranta alumina mai kunnawa a cikin Ingilishi. Alumina da aka yi amfani da shi a cikin masu haɓakawa ana kiransa "alumina mai kunnawa". Abu ne mai yuwuwa, tarwatse sosai tare da babban yanki. Its microporous surface yana da halaye da ake bukata domin catalysis, kamar adsorption yi, surface aiki, m thermal kwanciyar hankali, da dai sauransu, don haka shi ne yadu amfani a matsayin mai kara kuzari da kuma kara kuzari m ga sinadaran halayen.
A mai siffar zobe kunna alumina matsa lamba lilo mai adsorbent ne fari mai siffar zobe porous barbashi. The kunna alumina yana da uniform barbashi size, santsi surface, high inji ƙarfi, karfi hygroscopicity, ba ya kumbura da crack bayan ruwa sha, kuma ya kasance ba canzawa. Ba shi da guba, mara wari, kuma maras narkewa a cikin ruwa da ethanol.
Alumina
Ba shi da narkewa a cikin ruwa kuma yana iya narkewa a hankali a cikin sulfuric acid. Ana iya amfani da shi don tace ƙarfe aluminium kuma kuma ɗanyen abu ne don yin crucibles, porcelain, kayan ɓarkewa da duwatsu masu daraja.
Alumina da aka yi amfani da shi azaman adsorbent, mai kara kuzari da mai ɗaukar kaya ana kiransa “alumina da aka kunna”. Yana da halaye na porosity, babban tarwatsawa da babban yanki na musamman. Ana amfani dashi sosai a cikin maganin ruwa, petrochemical, sinadarai mai kyau, ilimin halitta da filayen magunguna.
Halayen alumina
1. Babban yanki na musamman: alumina da aka kunna yana da babban yanki na musamman. Ta hanyar dacewa da sarrafa tsarin sintering na alumina, alumina da aka kunna tare da takamaiman yanki mai tsayi kamar 360m2 / G ana iya shirya. Alumina da aka kunna wanda aka shirya ta hanyar amfani da colloidal aluminum hydroxide bazuwar ta NaAlO2 kamar yadda albarkatun kasa ke da ƙaramin girman pore da takamaiman yanki kamar 600m2 / g.
2. Daidaitaccen tsarin girman pore: Gabaɗaya magana, ana iya shirya samfuran tare da matsakaicin girman pore ta yin burodi tare da tsarkakakken aluminum hydroxide. Za'a iya shirya ƙananan samfuran girman pore ta hanyar shirya alumina da aka kunna tare da manne aluminum, da dai sauransu yayin da za'a iya shirya babban girman pore da aka kunna alumina ta hanyar ƙara wasu abubuwan halitta, kamar ethylene glycol da fiber, bayan konewa.
3. A saman yana da acidic kuma yana da kyakkyawan kwanciyar hankali na thermal.
Ayyukan alumina da aka kunna
Alumina da aka kunna yana cikin nau'in alumina sinadarai, wanda galibi ana amfani dashi azaman adsorbent, mai tsarkake ruwa, mai kara kuzari da mai ɗaukar nauyi. Alumina da aka kunna yana da ikon zaɓar ruwa a cikin gas, tururin ruwa da wasu ruwaye. Bayan adsorption ya cika, ana iya mai da shi a kusan 175-315. D irin. Adsorption da sake kunnawa za a iya aiwatar da su sau da yawa.
Bugu da ƙari, ana amfani da shi azaman desiccant, yana kuma iya ɗaukar tururin mai mai lubricating daga gurɓataccen iskar oxygen, hydrogen, carbon dioxide, iskar gas, da dai sauransu. Kuma ana iya amfani dashi azaman mai kara kuzari da tallafi kuma a matsayin tallafi don nazarin chromatographic.
Ana iya amfani da shi azaman wakili na defluorinating don babban ruwan sha mai suna fluorine (tare da babban iya aiki), wakili mai rarrabawa don rarraba alkanes a cikin samar da alkylbenzene, wakili mai lalatawa da sake farfadowa don mai mai canzawa, wakili mai bushewa ga gas a cikin masana'antar samar da iskar oxygen. , masana'antar yadi da masana'antar lantarki, wakili mai bushewa don iskar kayan aiki ta atomatik, da wakili mai bushewa da wakili mai tsarkakewa a cikin takin sinadarai, bushewar petrochemical da sauran masana'antu.
Lokacin aikawa: Juni-01-2022
