Tej yam yees siv tsawg lub ntiaj teb compound: Lanthhanb oxide

Lus hauv no teb,Molecular Cov QauvLa2o3, molecular hnyav 325.8091. Mas siv rau kev tsim qauv precision optical iav thiab kho kho qhov muag.

Cov cuab yeej tshuaj

Me ntsis soluble hauv dej thiab yooj yim soluble hauv cov acids los ua cov ntsev ua yeeb yam.

Raug rau cov huab cua, nws yog qhov yooj yim los nqus cov pa roj carbon dioxide thiab dej, maj mam tig mus rau hauv cov tshuaj lilthanum carbonate.

Kev hlawvLanthhanum oxideUa ke nrog dej kom tso cov nyiaj kub loj.

cuab yeej

Tsos thiab khoom: dawb cov hmoov.

Quav: 6.51 G / ml ntawm 25 ° C

Melting taw tes: 2315 ° C, npau npau tes: 4200 ° C

Solubility: soluble hauv cov kua qaub thiab ammonium chloride, insoluble hauv dej thiab ketones.

Txuj Ci Ntau Lawm

1. Cov khoom siv raw rau cov txheej txheem rho tawm yog lub ntiaj teb tsis tshua muaj kwv yees tom qab cov tshuaj tiv thaiv cerium tom qab laij tawm, 116-7% PR6o5, thiab 30% ND2O3. Compounded rau hauv σ ib lub ntiaj teb tsis tshua muaj cov tshuaj muaj zog nrog kev sib cais ntawm 320-330g / l ntawm lwm cov av me ntawm extraction. Cov kev daws teeb meem uas muaj cov lus qhia tsis pub muaj kev lom zem nrog ammonia, precipitated nrog oxalidated thiab hlawv kom tau txais cov khoom tiav ntawm cov khoom lag luam uas tiav ntawm cov tshuaj uas ua tiav ntawm cov tshuaj uas ua tiav ntawm cov tshuaj uas ua tiav ntawm cov tshuaj uas ua tiav ntawm cov tshuaj uas ua tiav ntawm cov tshuaj uas tau ua tiav Muab rho tawm los ntawm cov lus qhia ntawm cov tshuaj lom neeg cerium los yog npaj los ntawm hlawv cov kab mob carbonate lossis nitrate. Nws kuj tseem tuaj yeem tau txais los ntawm cua sov thiab decomposing lub oxalate ntawm lanthhant.

2. Qhov chaw LA (Oh) 3 nyob rau hauv ib platinum crucible, qhuav ntawm 200 ℃, hlawv ntawm 500 ℃, thiab decompose tshaj 840 ℃ kom tau txais cov lus qhia oxide.

Daim ntawv thov

Mas siv rau kev tsim qauv precision optical iav thiab kho kho qhov muag. Kuj siv hauv kev lag luam hluav taws xob raws li cov ceramic ceramic thiab piezoelectric tej yam ntxiv sib xyaw. Nws tseem raug siv los ua cov khoom siv raw rau kev tsim cov chaw hauv qab thiab ua ib qho kev sib cais rau kev sib cais roj av thiab ua kom zoo.

Daim ntawv thov daim ntawv thov: Feem ntau yog siv rau kev tsim khoom tshwj xeeb alloy precision optical iav, haum rau kev ua cov koob yees duab Fiber, thiab prisms rau cov twj kho tshiab. Nws kuj tseem siv rau kev tsim khoom ntawm Ceramic Capmitors, Piezoelectric Ceramic Dopants, thiab X-ray lumncants xws liLanthhanum bromideHmoov. Muab rho tawm los ntawm cov lus qhia ntawm cov tshuaj lom neeg cerium los yog tau los ntawm hlawv cov kab los yog nitrate. Nws kuj tseem tuaj yeem tau txais los ntawm cua sov thiab decomposing lub oxalate ntawm lanthhant. Siv ua catalyst rau ntau yam kev phiv tshuaj, xws li catalytic oxidation ntawm carbon monide, thiab catalytic hydrogenation ntawm carbon monide, thiab catalaltic hydrogenation ntawm carbon monide, thiab catalaltic hydrogenation ntawm carbon monide, thiab catalaltic hydrogenation ntawm carbon monide, thiab catalaltic hydrogenation ntawm carbon monide, thiab catalaltic hydrogenation ntawm carbon monide, thiab catalaltic hydrogenation ntawm carbon monide, methanaig rau methane thaum dopred nrog palladium. Lanthhanum oxide infiltrated nrog lithium oxide lossis zirconia (1%) tuaj yeem siv los tsim cov hlau nplaum ferrite. Nws yog ib qho kev xaiv tau zoo rau kev xaiv rau oxidative sib txuas ntawm methoce los tsim kev nyob mus txawv thiab ethylene. Siv los txhim kho qhov kub siab thiab dielectric thaj chaw ntawm Barium Titanate (srtium3) thiab cov khoom siv freatic thiab tsom iav kho qhov muag.