Waqtigan xaadirka ah, isticmaalka ugu weyn ee pseudo-boehmite waa walxo ceeriin ah oo loogu talagalay diyaarinta alumina iyo dhejis loogu talagalay kicinta adag ama qaadaha kicinta. Alumina-da lagu diyaariyo dubista pseudo-boehmite waxay leedahay bedka sare ee gaarka ah waxaana si weyn loogu isticmaalaa sidii qaade iyo qaade kiciyaha warshadaha batroolka.
1. loo isticmaalo walxaha ceeriin ee nanometer-ka alumina
Mid ka mid ah ISTICMAALKA muhiimka ah ee pseudo-boehmite waa walaxda ceeriin ee aluminium oxide. Iyada oo ku saleysan astaamaha aagga dusha sare ee gaarka ah, firfircoonida sare iyo nuugista xooggan ee walxaha ceeriin, waxaa loo isticmaalay in lagu sameeyo dhoobada qaab-dhismeedka heerkulka sare leh sida dhoobada aluminium nitride. Intaa waxaa dheer, nano-Al2O3 waxay si gaar ah ugu habboon tahay nadiifinta farsamada kiimikada (CMP), iyadoo la adeegsanayo nano-Al2O3 maadaama walxaha shiididda ee ay soo saarto slurry CMP loo isticmaali karo lakabka dhexe ee habka wax soo saarka IC sida walxaha fiilooyinka semiconductor iyo walxaha filimka sida tungsten, aluminium, simida naxaasta, iyo galaaska indhaha ee horumarsan, kiristaalka quartz iyo qurxinta dhagaxyada kala duwan.
Jaantuska -Al2O3 waxaa loo isticmaali karaa kiimikada nadiifinta farsamada kiimikada ee walxaha xoqan
2. Wixii kaaliyayaasha hydrogenation
Si loo daboolo shuruudaha isticmaalka kheyraadka batroolka iyo saliidda nadiifka ah, tignoolajiyada hydrogenated ayaa si ballaaran loo isticmaalay, kicinta hydrogenation waa xudunta tignoolajiyada hydrogenation, oo loo isticmaalo side-ka hydrogenation catalyst gamma alumina waxaa badanaa ka kooban tahay diaspore khafiif ah oo quasi ah iyadoo la dubayo fuuq-baxa, waxay leedahay bedka dusha sare ee gaarka ah, gelitaanka iyo qaybinta daloolka la hagaajin karo, dusha sare waxay leedahay xarun aashito oo kala duwan. Xoog farsamo oo wanaagsan iyo xasillooni kuleyl, oo lagu daray astaamo qiimo jaban.
Ka-qaybgalayaasha sawir-gacmeedka ayaa lagama maarmaan u ah soo saarista alaabada batroolka
Warshadaha casriga ah ee sifeynta saliidda iyo kiimikada, in ka badan 90% habka falgalka kiimikada waxaa lagu xaqiijiyaa habka katalytic, sidaa darteed katalytic-ga ayaa noqday furaha lagu xaqiijinayo habka cusub ee sifeynta iyo kiimikada, horumarinta wax soo saarka cusub. Warshadaha sifeynta saliidda, katalysts-ka adag ayaa si caadi ah loo isticmaalaa, kuwaas oo ka kooban side iyo qayb firfircoon. Katalyst-ku waa qayb gaar ah oo ka mid ah katalyst-ka adag, kaas oo kordhin kara aagga dusha sare ee gaarka ah, hagaajin kara iska caabbinta kulaylka iyo xoogga farsamada. Katalyst-ku wuxuu ISTICMAALAA noocyo badan oo katalyst ah, sida: alumina, shaandho molecular ah, jel silica, jel silica, kaarboon firfircoon iyo dhulka diatomaceous. Si kastaba ha ahaatee, xaddiga side alumina wuxuu ka kooban yahay in ka badan kala bar wadarta guud ee side katalyst-ka. Katalyst-ka dildilaaca catalytic (FCC) waa xudunta habka dildilaaca catalytic-ka. Maadaama saliidda cayriin ee adduunka ay culus tahay oo ka liidataa, marka la isku daro dildilaaca catalytic-ka ee walxaha cayriin ee isku daraya saliidda culus, saliidda hartay waxay noqotay hab si weyn loo isticmaalo oo wax lagu farsameeyo, sidaas darteed waxay u baahan tahay katalyst-ka catalytic-ka saliidda (FCC) waa inuu noqdaa faafinta molecular-ka saliidda culus ee godka weyn, godka weyn ee bartamahana waa inuu lahaadaa cufnaanta aashitada ku habboon, si loo hagaajiyo awoodda dildilaaca kicinta ee isku-dhafka macromolecular ee walxaha ceeriin ah. Alumina firfircoon ayaa badanaa loo isticmaalaa in lagu hagaajiyo matrix-ka kicinta. Mugga daloolka weyn wuxuu ku habboon yahay faafinta isku-dhafka macromolecular ee walxaha kiciya, halka aagga sare ee gaarka ah uu ku habboon yahay kala firdhinta birta firfircoon, si loo hagaajiyo waxqabadka falcelinta ee kiciyaha.
3. Waxaa loo isticmaalaa sida dhejis
Side-side khafiif ah oo loo isticmaalo wakiilka isku xidhka ma aha oo kaliya faa'iido u leh qaabaynta, laakiin sidoo kale wuxuu saameyn doonaa waxqabadka kiciyeyaasha, cilmi-baarayaasha ku jira denitration gaaska qiiqa ee hoos u dhigista catalytic-ga Ce – Mn/TiO2 ee habka ku biirista diaspore khafiif ah oo ah wakiilka isku xidhka, waxay ogaadeen in aan si weyn u wanaajinayn xoogga farsamada ee kiciyeyaasha, sidoo kale ay hagaajisay denitration surfactant-ka xulashada kiciyeyaasha.
4. hagaaji dahaarka -Al2O3
Waxqabadka dahaarka lakabka saaran side-ka dahaarka dusha sare ee side-ka waa in la kordhiyo aagga dusha sare ee habka caadiga ah loo isticmaalo, gamma alumina waa mid ka mid ah walxaha dahaarka ugu badan ee la isticmaalo, oo leh bedka dusha sare ee gaarka ah, waxay ka caawisaa qayb firfircoon oo ku jirta qaybinta wax ku oolka ah ee habka dahaarka, diyaarinta dahaarka gamma alumina ee si caadi ah loo isticmaalo ee AlOOH precursor sol, alumina sol si ay u noqoto diaspore khafiif ah sida walxo cayriin ah, diyaarinta, iyadoo la adeegsanayo habka habka peptization acid si fudud loo xakamayn karo, waxaa loo isticmaali karaa wax soo saarka warshadaha.
Waqtiga boostada: Abriil-22-2020