Alumina tuaj yeem faib ua ntau hom raws li nws cov qauv siv lead ua thiab tshuaj siv lub cev thiab tshuaj lom neeg. ntawm lawv,Qhib AluminaThiab alumina muaj tib cov tshuaj lom neeg muaj pes tsawg leeg, tab sis muaj ntau qhov sib txawv ntawm cov khoom thiab cov kev siv alumina thiab yog li qhib tau alumina thiab alumina tib cov tshuaj? Dab tsi yog qhov sib txawv ntawm lawv?
Tshuaj Muaj Tshuaj
• Alumina:
Nws yog cov oxide nyob ruaj khov ntawm txhuas, feem ntau cov qauv -alumina, nrog tus qauv tuab thiab muaj zog tshuaj.
• Ua kom Alumina:
Nws feem ntau yog hais txog kev hloov pauv Alumina xws li -alumina lossis η-alumina, nrog xoob thiab ntxig thaj tsam loj .
Kev sib piv ntawm cov khoom siv lub cev
|
tus yam ntxwv |
Qhib Alumina |
Tus nas |
|
Crystal Qauv |
Amorphous lossis hloov theem (/ hom) |
Nyuaj Siab Crystal Theem (Hom) |
|
Cov Cheeb Tsam Thaj Chaw Tshwj Xeeb |
siab ({200-400 m² / g) |
Tsawg (<10 m² / g) |
|
Porosity |
Cov qauv sib tw |
Ntev tus qauv |
|
Thermal ruaj khov |
Kev kub siab yuav tig mus rau theem |
Ruaj khov, cov kub tsis kam |
Qhov sib txawv tseem ceeb
• Tej Yam Kev Ua:
Ua kom Alumina muaj ntau cov kev sib tw uas tsis tau txais thiab cov pab pawg hydroxyl ntawm nws cov npoo av, thiab muaj cov kev ua yeeb yam muaj zog thiab catalytic; dog dig alumina yog inert thiab haum rau cov khoom siv kub-kub refractory {}}
• Cov ntawv thov:
o o activ activ activ: Desiccant, catalyst cov cab kuj, kev kho dej adsorbent (xws li tshuaj fluoride).
o dontern alumina: ceramics, abrasivesive, refractory cov ntaub ntawv (xws li crucilact, refractory cib) .
Vim li cas thiaj ua kom Alumina "nquag"?
Qhov "kev ua ub no" ntawm activate alumina feem ntau yog los ntawm:
1.} Cov qauv nyiaj tshwj xeeb muaj cov qauv adsorption ntxiv {}}
{{02. hydroxyl pawg: tuaj yeem chemically dsorb nrog dej thiab roj molecules.
{3.}} Txoj Kev Txom Nyem: Txhim kho qhov kev sib cuam tshuam nrog lwm cov tshuaj thiab txhim kho cov kev ua haujlwm catalytic.
Nyob rau hauv kev sib piv, dog dig alumina (-al₂o₃) muaj cov qauv ntom ntom, thiab yuav luag tsis muaj peev xwm adsorption, thiab muaj peev xwm tsis muaj peev xwm}
Xaus: Puas yog ua kom Alumina thiab Alumina tib yam?
• Ob qho zoo sib xws: Ob leeg muaj tib cov tshuaj lom neeg sib xyaw ua ke ntawm al₂o₃ .
• Qhov sib txawv:
o Cov qauv siv lead ua: ua haujlwm alumina yog / η hom, thaum zoo tib yam alumina yog hom .
o Lub cev siv lub cev: Ua kom tau cov alumina muaj qhov tseem ceeb thiab muaj qhov loj me me sab thaj chaw, thaum muaj kev tawv ncauj zoo nkauj thiab muaj siab tawv {}}
o Cov Cheeb Tsam Daim Ntawv Thov: Ua kom Alumina yog siv rau kev kos duab thiab catalysis, thaum dog dig alumina yog siv rau refactory thiab ceramics .
Yog li ntawd, txawm hais tias kev ua kom zoo li alumina thiab txiv ntoo zoo nkauj muaj tib cov mis, lawv muaj cov ntaub ntawv sib txawv thiab muaj cov siv sib txawv ntawm .
Yuav xaiv li cas?
• Yog tias kev kos duab, catalysisy lossis kom qhuav yog xav tau, xaiv cov alumina .
• Yog tias muaj kev kub kub ua kom puas, kev coj tawm tsam lossis kev tawm tsam, xaiv cov alumina dog dig .
Kuv vam tias tsab xov xwm no tuaj yeem pab koj kom meej meej qhov txawv ntawmQhib AluminaThiab Alumina zoo tib yam kom koj tuaj yeem xaiv qhov yog hauv kev siv cov kev siv!