I-Magic Rare Earth Compound: I-Lanthanum oxide

I-Lanthanum oxide,ifomula yamangqamuzanaLa2O3, isisindo samangqamuzana 325.8091.Ikakhulukazi isetshenziselwa ukukhiqiza ingilazi ebonakalayo enembile nemicu yokubona.

Impahla yamakhemikhali

Incibilika kancane emanzini futhi incibilika kalula kuma-asidi ukwenza usawoti ohambelanayo.

Ichayeke emoyeni, kulula ukumunca isikhutha namanzi, kancane kancane iphenduke i-lanthanum carbonate.

Ukushai-lanthanum oxideihlanganisa namanzi ukukhulula inani elikhulu lokushisa.

impahla ebonakalayo

Ukubukeka kanye nezakhiwo: Impushana eqinile emhlophe.

Ukuminyana: 6.51 g/mL ku-25 ° C

Iphuzu elincibilikayo: 2315 ° C, indawo abilayo: 4200 ° C

Ukunyibilika: Incibilika kuma-asidi ne-ammonium chloride, engancibiliki emanzini nama-ketone.

Indlela yokukhiqiza

1. Izinto ezisetshenziswayo zendlela yokukhipha iyisisombululo se-nitrate yomhlaba engavamile ngemva kokususwa kwe-cerium, equkethe cishe u-50% La2O3, ukulandelela amanani e-CeO2, 116-7% Pr6O5, kanye no-30% Nd2O3.Kuhlanganiswe ku-Σ Isixazululo se-nitrate yomhlaba engavamile esine-concentration ye-320-330g/L ye-RxOy sakhishwa futhi sahlukaniswa kweminye imihlaba eyivelakancane kusetshenziswa i-neutral phosphine extractant, i-dimethyl heptyl methylphosphonate (P350), ohlelweni lukaphalafini lwe-P350 lwezigaba ezingama-35-38. yokukhipha.Isixazululo esiyinsalela esiqukethe i-lanthanum sancishiswa nge-ammonia, sancipha nge-oxalic acid, sabe sesihlungwa futhi sashiswa ukuze kutholwe umkhiqizo oqediwe we-lanthanum oxide.Ikhishwe ku-lanthanum phosphate cerium ore noma ilungiswe ngokushisa i-lanthanum carbonate noma i-nitrate.Ingabuye itholakale ngokushisa nokubola i-oxalate ye-lanthanum.

2. Beka i-La (OH) 3 ku-platinum crucible, yome ku-200 ℃, shisa ku-500 ℃, futhi ubole ngaphezu kuka-840 ℃ ukuze uthole i-lanthanum oxide.

Isicelo

Ikakhulukazi isetshenziselwa ukukhiqiza ingilazi ebonakalayo enembile nemicu yokubona.Ibuye isetshenziswe embonini ye-elekthronikhi njengama-capacitor e-ceramic kanye nezithasiselo ze-ceramic ze-piezoelectric.Ibuye isetshenziswe njengento eluhlaza ekukhiqizeni i-lanthanum borate futhi njenge-catalyst yokuhlukaniswa kwe-petroleum nokucwengwa.

Inkambu yohlelo lokusebenza: Isetshenziselwa kakhulu ukukhiqiza ingilazi ye-alloy enembile, ibhodi le-fiber optical high refractive, elifanele ukwenza amakhamera, amakhamera, amalensi e-microscope, namaprism wezinsimbi zokubona ezithuthukisiwe.Ibuye isetshenziselwe ukwenza ama-capacitor e-ceramic, ama-piezoelectric ceramic dopants, kanye nezinto ze-X-ray luminescent ezifanai-lanthanum bromideimpushana.Ikhishwe ku-lanthanum phosphate cerium ore noma itholwe ngokushisa i-lanthanum carbonate noma i-nitrate.Ingabuye itholakale ngokufudumeza nokubola i-oxalate ye-lanthanum.Isetshenziswa njenge-catalyst yokusabela okuhlukahlukene, njenge-catalytic oxidation ye-carbon monoxide uma igcwele i-cadmium oxide, kanye ne-catalytic hydrogenation ye-carbon monoxide ku-methane uma igcwele i-palladium.I-Lanthanum oxide efakwe nge-lithium oxide noma i-zirconia (1%) ingasetshenziswa ukwenza omazibuthe be-ferrite.Kuyi-catalyst esebenza ngempumelelo kakhulu yokuhlangana kwe-oxidative ye-methane ukukhiqiza i-ethane ne-ethylene.Isetshenziselwa ukuthuthukisa ukuncika kwezinga lokushisa kanye nezakhiwo ze-dielectric ze-barium titanate (BaTiO3) kanye ne-strontium titanate (SrTiO3) ferroelectrics, kanye nokwenza amadivaysi e-fiber optic nezingilazi ezibonakalayo.