Lanthanum Fluoride
Cov ntaub ntawv luv luv
Khoom siv:Lanthanum Fluoride
Formula:LaF3
CAS Nr .: 13709-38-1
Molecular Luj: 195.90
Qhov ceev: 5.936 g / cm3
Melting point: 1493 ° C
Cov tsos mob: Dawb hmoov los yog flake
Solubility: Soluble nyob rau hauv muaj zog mineral acids
Stability: Yooj yim hygroscopic
Ntau hom lus: LanthanFluorid, Fluorure de Lanthane, Fluoruro del Lantano.
Daim ntawv thov:
Lanthanum Fluoride, feem ntau yog siv rau hauv cov iav tshwj xeeb, dej kho thiab catalyst, thiab tseem yog cov khoom siv tseem ceeb rau kev ua Lanthanum Hlau. Lanthanum Fluoride (LaF3) yog ib qho tseem ceeb ntawm cov iav Fluoride hnyav hu ua ZBLAN. Cov iav no muaj kev xa tawm zoo tshaj plaws nyob rau hauv ntau qhov infrared thiab yog li siv rau kev sib txuas lus fiber ntau. Lanthanum Fluoride yog siv nyob rau hauv phosphor teeb txheej. Sib xyaw nrog Europium Fluoride, nws kuj yog siv rau hauv cov khoom siv lead ua ntawm Fluoride ion-xaiv electrodes.Lanthanum fluoride yog siv los npaj scintillators thiab tsis tshua muaj lub ntiaj teb siv lead ua laser cov ntaub ntawv uas yuav tsum tau los ntawm niaj hnub kho mob duab tso saib technology thiab nuclear science. Lanthanum fluoride yog siv los ua fluoride iav optical fiber ntau thiab tsawg lub ntiaj teb infrared iav. Lanthanum fluoride yog siv nyob rau hauv manufacturing arc teeb carbon electrodes nyob rau hauv qhov chaw teeb pom kev zoo. Lanthanum fluoride siv nyob rau hauv tshuaj ntsuam xyuas los tsim fluoride ion xaiv electrodes.
Specification
| La2O3/TREO (% min.) | 99.999 ib | 99.99 ib | 99.9 ua | 99 |
| TREO (% min.) | 81 | 81 | 81 | 81 |
| Rare Earth Impurities | ppm max. | ppm max. | % max. | % max. |
| CeO2/TSO Pr6O11/TSO Nd2O3/TREO Sm2O3/TSO Eu2O3/TSO Gd2O3/TSO Y2O3/TREO | 5 5 2 2 2 2 5 | 50 50 10 10 10 10 50 | 0.05 Nws 0.02 ib 0.02 ib 0.01 ib 0.001 ib 0.002 ib 0.01 ib | 0.5 0.1 0.1 0.1 0.1 0.1 0.1 |
| Tsis-Re Earth Impurities | ppm max. | ppm max. | % max. | % max. |
| Fe2O 3 SiO 2 CaO Cov NiO CuO MnO2 Cr2O 3 CdO PbO | 50 50 100 3 3 3 3 3 5 10 | 100 100 100 5 5 3 5 3 5 50 | 0.02 ib 0.05 Nws 0.5 | 0.03 ib 0.1 0.5 |
Synthetic method
1. Dissolve lanthanum oxide hauv hydrochloric acid los ntawm kev siv tshuaj thiab dilute mus rau 100-150g / L (xws li La2O3). Ua kom sov cov tshuaj rau 70-80 ℃, thiab tom qab ntawd los nag nrog 48% hydrofluoric acid. Cov dej nag yog ntxuav, lim, qhuav, crushed, thiab nqus dej kom tau lanthanum fluoride.
2. Muab LaCl3 kua uas muaj hydrochloric acid nyob rau hauv ib lub tais platinum thiab ntxiv 40% hydrofluoric acid. Ncuav cov kua ntau dhau thiab evaporate cov residue qhuav.
Daim ntawv pov thawj:
Qhov peb tuaj yeem muab tau:
