Haɗin Duniya na Sihiri Rare: Lanthanum Oxide

Lanthanum oxide,tsarin kwayoyin halittaLa2O3, Nauyin kwayoyin 325.8091. Anfi amfani dashi don kera madaidaicin gilashin gani da filaye na gani.

Chemical dukiya

Dan narkewa a cikin ruwa kuma cikin sauƙin narkewa a cikin acid don samar da gishiri daidai.

An fallasa shi zuwa iska, yana da sauƙi don ɗaukar carbon dioxide da ruwa, a hankali ya juya zuwa lanthanum carbonate.

The konalanthanum oxideyana haɗuwa da ruwa don sakin babban adadin zafi.

dukiya ta jiki

Bayyanar da kaddarorin: Farar m foda.

Yawa: 6.51g/ml a 25 ° C

Matsayin narkewa: 2315 ° C, wurin tafasa: 4200 ° C

Solubility: Mai narkewa a cikin acid da ammonium chloride, wanda ba zai iya narkewa cikin ruwa da ketones.

Hanyar samarwa

1. The albarkatun kasa don hakar hanya ne mai rare duniya nitrate bayani bayan cerium cire, wanda ya ƙunshi kusan 50% La2O3, gano adadin CeO2, 116-7% Pr6O5, da kuma 30% Nd2O3. An haɗa shi cikin Σ Wani bayani mai nitrate na duniya mai wuya tare da maida hankali na 320-330g/L na RxOy an cire shi kuma an rabu da shi daga wasu ƙananan ƙasa ta amfani da tsantsa mai tsaka-tsakin phosphine, dimethyl heptyl methylphosphonate (P350), a cikin tsarin P350 kerosene don matakan 35-38. na hakar. Ragowar maganin da ke ɗauke da lanthanum an lalata shi da ammonia, an haɗe shi da oxalic acid, sannan aka tace kuma an ƙone shi don samun gamammiyar samfurin lanthanum oxide. Cire daga lanthanum phosphate cerium ore ko shirya ta hanyar kona lanthanum carbonate ko nitrate. Hakanan ana iya samun ta ta dumama da lalata oxalate na lanthanum.

2. Sanya La (OH) 3 a cikin crucible platinum, bushe a 200 ℃, ƙone a 500 ℃, kuma ya bazu sama da 840 ℃ don samun lanthanum oxide.

Aikace-aikace

Anfi amfani dashi don kera madaidaicin gilashin gani da filaye na gani. Hakanan ana amfani dashi a cikin masana'antar lantarki azaman yumbu capacitors da piezoelectric yumbu additives. Hakanan ana amfani da shi azaman ɗanyen abu don samar da lanthanum borate kuma azaman mai haɓakawa don rabuwa da tace mai.

Filin aikace-aikacen: An fi amfani da shi don kera madaidaicin gilashin allo na musamman, babban allo na fiber na gani, wanda ya dace da yin kyamarori, kyamarori, ruwan tabarau na microscope, da prisms don kayan aikin gani na gaba. Hakanan ana amfani dashi a cikin masana'antar yumbu capacitors, piezoelectric yumbu dopants, da kayan hasken X-ray kamar su.lanthanum bromidefoda. Cire daga lanthanum phosphate cerium ore ko samu ta hanyar kona lanthanum carbonate ko nitrate. Hakanan ana iya samun ta ta dumama da lalata oxalate na lanthanum. An yi amfani da shi azaman mai kara kuzari don halayen daban-daban, kamar catalytic oxidation na carbon monoxide lokacin da aka yi amfani da shi tare da cadmium oxide, da hydrogenation na katalytic na carbon monoxide zuwa methane lokacin da aka yi amfani da palladium. Lanthanum oxide da aka shiga tare da lithium oxide ko zirconia (1%) ana iya amfani da su don kera maganadisu na ferrite. Yana da tasiri mai tasiri mai mahimmanci don haɗakarwar methane don samar da ethane da ethylene. Ana amfani dashi don haɓaka dogaro da zafin jiki da kaddarorin dielectric na barium titanate (BaTiO3) da strontium titanate (SrTiO3) ferroelectrics, kazalika don kera na'urorin fiber optic da tabarau na gani.