Qhib AluminaYog qhov ntxeem tau, cov khoom siv roj oxide cov roj av txhuas Nws adsorption mechanism feem ntau yog raws li cov nyhuv synergistic ntawm lub cev adsorption thiab tshuaj adsorption.
Adsorption mechanism ntawm kev ua kom Alumina
1. Lub Cev Kos Npe
Lub cev adsorption feem ntau yog nyob ntawm cov qauv ntxeem tau thiab nto van der waals yuam kev ntawm actavic yuam kev ua kom tiav alumina, thiab nws cov yam ntxwv muaj xws li:
• Thaj chaw muaj tseeb thiab nplua nuj mesoporous, uas tuaj yeem adsorb roj lossis kua molecules los ntawm cov kev ua kom hws capillary.
• Cov npoo npoo npoo: saum npoo ntawm alumina yog nplua nuj nyob hauv pawg hydroxyl (-o
2. Tshuaj Txhuam Kos Duab
Tshuaj lom neeg adsorption cuam tshuam nrog cov neeg sib koom ua ke ntawm cov alumina ua haujlwm thiab cov adsorbate, feem ntau yog suav nrog:
• ion pauv adsorption: piv txwv li, hauv cov txheej txheem defluorination, cov pab pawg hydoxyl (-h) thiab fluoride ions)
Al-oh + f- → al-f + Oh-AH-OH-AH-OH - → al-f + oh-
• Acid-pib kev sib cuam tshuam: lub npoo ntawm alumina muaj amphoterb acidic (xws li so₂) lossis alkaline (xws li nh₃) molecules.
3. Adsorption Xaiv
Adsorption muaj peev xwm ntawm cov alumina tau cuam tshuam los ntawm cov hauv qab no:
• Molecular polarity: It preferentially adsorbs molecules with strong polarity (such as water>ethanol>Methane).
• Molecular me me: lub pore loj faib txiav txim nws cov adsorption ntawm cov lwg me me lossis cov organic teeb meem ntawm qhov loj me.
• Tus nqi pH: cov ph hoob pheebsuab cuam tshuam rau tus nqi sib luag thiab cov pab pawg sib cais ntawm cov pab pawg hydroxyl, yog li hloov pauv kev ua tiav ntawm ions.
Kev tsim dua tshiab thiab rov ua dua tshiab
• Kev tsim kho lub thermaleration: cua sov ntawm 150-300 Qib rau Desorb dej lossis cov khoom siv volatile.
• Kev tsim cov tshuaj lom neeg: kev kho cov kua qaub los yog cov tshuaj alkaline los kho cov chaw adsorption.
• Microwave kev tsim kho microwave: high efficiency thiab lub zog txuag, haum rau kev lag luam kev lag luam.
Cov Kev Siv Raug Raug
1. Cov roj ziab: siv rau lub cev qhuav dej ntawm cov huab cua compressed thiab nkev.
2. Dej kev kho mob: tshem cov kuab paug xws li fluorine, arsenic, thiab cov hlau hnyav ntawm cov dej haus.
3. Petrochemicals: Adsorb Sulfides thiab ya raws hauv hydrocarbons los txhim kho cov roj huv.
4. Cov cab kuj catalyst: kev thauj khoom muaj txiaj ntsig rau cov kev cuam tshuam catalytic.
Qhib AluminaUa tau zoo tshaj tawm los ntawm lub cev thiab tshuaj kos duab kos duab, thiab nws cov kev ua tau zoo tuaj yeem tsim kho kom zoo los ntawm kev tswj hwm lub pore loj, kev hloov kho saum npoo thiab cov kev cai rov tsim dua tshiab.