Lanthanum oxide,molecular formulaLa2O3, molecular uremu 325.8091. Inonyanya kushandiswa kugadzira chaiyo optical girazi uye optical fibers.
Chemical property
Inonyungudika zvishoma mumvura uye inonyungudika zviri nyore mumaasidhi kuita munyu unoenderana.
Inoratidzirwa kumhepo, zviri nyore kutora carbon dioxide nemvura, zvishoma nezvishoma ichishanduka kuita lanthanum carbonate.
Kusvirwalanthanum oxideinosanganiswa nemvura kuburitsa huwandu hwakawanda hwekupisa.
pfuma chaiyo
Kuonekwa uye zvivakwa: White solid powder.
Density: 6.51 g/mL pa25 ° C
Kunyungudika: 2315 ° C, nzvimbo yekuvira: 4200 ° C
Solubility: Soluble mu acids uye ammonium chloride, isinganyunguriki mumvura uye ketoni.
Nzira yekugadzira
1. Iyo yakasvibirira yenzira yekuchera ndeye isingawanzo pasi nitrate solution mushure mekubviswa kwecerium, iyo ine inenge 50% La2O3, tsvaga huwandu hweCeO2, 116-7% Pr6O5, uye 30% Nd2O3. Yakasanganiswa mu Σ Iyo isingawanzo pasi nitrate solution ine 320-330g/L yeRxOy yakabviswa uye yakaparadzaniswa kubva kune dzimwe nyika isingawanzo shandiswa kushandisa neutral phosphine extractant, dimethyl heptyl methylphosphonate (P350), muP350 parafini system ye35-38 matanho. yekubvisa. Mushonga wakasara une lanthanum wakagadziriswa neammonia, wakanyoroveswa neoxalic acid, wozopepetwa nekupiswa kuti uwane chigadzirwa chakapedzwa chelanthanum oxide. Yakatorwa kubva ku lanthanum phosphate cerium ore kana kugadzirwa nekupisa lanthanum carbonate kana nitrate. Inogonawo kuwanikwa nekupisa uye kuora oxalate ye lanthanum.
2. Isai La (OH) 3 mu platinum crucible, yakaoma pa 200 ℃, inopisa pa 500 ℃, uye iparadze pamusoro pe840 ℃ kuti iwane lanthanum oxide.
Application
Inonyanya kushandiswa kugadzira chaiyo optical girazi uye optical fibers. Inoshandiswawo muindasitiri yemagetsi seceramic capacitors uye piezoelectric ceramic additives. Inoshandiswawo sechinhu chakasvibirira chekugadzirwa kwelanthanum borate uye sechinhu chinokonzera kupatsanurwa kwepetroleum uye kunatswa.
Munda wekushandisa: Inonyanya kushandiswa kugadzira yakakosha alloy precision optical girazi, yakakwira refractive optical fiber board, yakakodzera kugadzira makamera, makamera, maikorosikopu lenzi, uye maprism epamusoro optical zviridzwa. Inoshandiswawo mukugadzira ceramic capacitors, piezoelectric ceramic dopants, uye X-ray luminescent zvinhu zvakaita se.lanthanum bromideupfu. Yakatorwa kubva ku lanthanum phosphate cerium ore kana kuwanikwa nekupisa lanthanum carbonate kana nitrate. Inogonawo kuwanikwa nekupisa uye kuora oxalate ye lanthanum. Inoshandiswa sechinhu chinokonzeresa kuita kwakasiyana-siyana, senge catalytic oxidation yecarbon monoxide kana yaiswa cadmium oxide, uye catalytic hydrogenation yecarbon monoxide kuenda kumethane kana yaiswa palladium. Lanthanum oxide yakapinzwa nelithium oxide kana zirconia (1%) inogona kushandiswa kugadzira magineti eferrite. Iyo inonyatso inoshanda yekusarudza catalyst ye oxidative coupling ye methane kugadzira ethane uye ethylene. Inoshandiswa kuvandudza tembiricha inotsamira uye dielectric zvimiro zvebarium titanate (BaTiO3) uye strontium titanate (SrTiO3) ferroelectrics, pamwe nekugadzira fiber optic zvishandiso nemagirazi emaziso.
Nguva yekutumira: Aug-08-2023