Mgbakwụnye Ime Anwansi Rare Ụwa: Lanthanum Oxide

Lanthanum oxide,usoro ihe omimiLa2O3, molekụla arọ 325.8091. A na-eji ya eme ihe maka imepụta ezigbo ugegbe anya na eriri anya.

Ihe onwunwe kemịkalụ

Na-agbari ntakịrị n'ime mmiri ma na-agbaze ngwa ngwa na acid iji mepụta nnu kwekọrọ.

N'ịbụ ndị na-ekpuchi ikuku, ọ dị mfe ịnweta carbon dioxide na mmiri, jiri nwayọọ nwayọọ ghọọ lanthanum carbonate.

Na-ere ọkụlanthanum oxidena-ejikọta ya na mmiri iji hapụ nnukwu okpomọkụ.

ihe onwunwe

Ọdịdị na Njirimara: White siri ike ntụ ntụ.

Njupụta: 6.51 g/mL na 25 Celsius

Ebe na-agbaze: 2315 ° C, ebe esi mmiri: 4200 ° C

Solubility: Soluble na acids na ammonium chloride, nke a na-apụghị ịsacha na mmiri na ketones.

Usoro mmepụta

1. Akụrụngwa maka usoro mmịpụta bụ ihe ngwọta nitrate ụwa na-adịghị ahụkebe mgbe mwepụ cerium gasịrị, nke nwere ihe dịka 50% La2O3, ọnụọgụ nke CeO2, 116-7% Pr6O5, na 30% Nd2O3. Ejikọtara ya na Σ A na-ewepụta ihe ngwọta nitrate ụwa na-adịghị ahụkebe na ntinye nke 320-330g/L nke RxOy wee kewapụ ya na ụwa ndị ọzọ na-adịghị ahụkebe site na iji ihe na-anọpụ iche phosphine, dimethyl heptyl methylphosphonate (P350), na P350 kerosene usoro maka 35-38 nkebi. nke mmịpụta. A na-ewepụ ihe ngwọta fọdụrụnụ nke nwere lanthanum na amonia, wụsara ya na oxalic acid, wee kpochaa ma kpọọ ya ọkụ iji nweta ngwaahịa lanthanum oxide emechara. Ewepụtara na lanthanum phosphate cerium ore ma ọ bụ kwadebere site na ọkụ lanthanum carbonate ma ọ bụ nitrate. Enwere ike nweta ya site na kpo oku na decomposing oxalate nke lanthanum.

2. Tinye La (OH) 3 na platinum crucible, kpọrọ nkụ na 200 ℃, ọkụ na 500 ℃, na decompose n'elu 840 ℃ iji nweta lanthanum oxide.

Ngwa

A na-eji ya eme ihe maka imepụta ezigbo ugegbe anya na eriri anya. A na-ejikwa ya na ụlọ ọrụ eletrọnịkị dị ka seramiiki capacitors na ihe mgbakwunye seramiiki piezoelectric. A na-ejikwa ya dị ka ihe eji eme ihe maka mmepụta nke lanthanum borate na ihe na-eme ka ikewapụ na nnụcha mmanụ.

Ngwa ubi: A na-eji ya eme ihe maka imepụta enyo enyo nke ziri ezi alloy pụrụ iche, bọọdụ eriri anya dị elu, dabara maka ịme igwefoto, igwefoto, anya m microscope, na prisms maka ngwa ngwa anya dị elu. A na-ejikwa ya n'ichepụta seramiiki capacitors, piezoelectric ceramic dopants, na ihe ọkụ ọkụ X-ray dị ka.lanthanum bromidentụ ntụ. Ewepụtara na lanthanum phosphate cerium ore ma ọ bụ nweta site na ọkụ lanthanum carbonate ma ọ bụ nitrate. Enwere ike nweta ya site na kpo oku na decomposing oxalate nke lanthanum. A na-eji ya dị ka ihe na-akpali akpali maka mmeghachi omume dị iche iche, dị ka catalytic oxidation nke carbon monoxide mgbe a na-etinye ya na cadmium oxide, na catalytic hydrogenation nke carbon monoxide na methane mgbe a na-etinye ya na palladium. Lanthanum oxide nke etinyere na lithium oxide ma ọ bụ zirconia (1%) nwere ike iji rụpụta ihe ndọta ferrite. Ọ bụ ihe na-arụ ọrụ nke ọma na-eme ka njikọ oxidative nke methane mepụta ethane na ethylene. A na-eji ya emeziwanye ndabere okpomọkụ na ihe dielectric nke barium titanate (BaTiO3) na strontium titanate (SrTiO3) ferroelectrics, yana imepụta ngwaọrụ fiber optic na enyo anya.