Background uye General Situation
Rare earth elementsndiyo floorboard ye IIIB scandium, yttrium uye lanthanum mu periodic table.Pane l7 zvinhu.Rare Earth ine yakasarudzika yemuviri uye makemikari zvimiro uye yakashandiswa zvakanyanya mumaindasitiri, zvekurima uye mamwe minda.Kuchena kweasingawanzo mubatanidzwa wepasi kunogadzirisa zvakananga zvinhu zvakakosha zvezvinhu.Kuchena kwakasiyana kwezvinhu zvisingawanzo zvepasi zvinogona kugadzira zvinhu zveceramic, fluorescent zvinhu uye zvemagetsi zvinhu zvine zvakasiyana mashandiro ekuita.Parizvino, nekuvandudzwa kwetekinoroji yekuchera pasi, yakachena isingawanzo kusanganiswa kwepasi inopa tarisiro yakanaka yemusika, uye kugadzirira kwepamusoro-isingawanzo kuita zvepasi zvinhu kunoisa pamberi pepamusoro zvinodiwa zveakachena zvisingawanzo sanganiswa pasi.Cerium compound ine huwandu hwakasiyana hwekushandisa, uye mhedzisiro yayo mune dzakawanda maapplication inoenderana nekuchena kwayo, zvimiro zvemuviri uye kusvibiswa kwemukati.Mukugoverwa kwezvinhu zvisingawanzoitiki zvepasi, cerium inotora chikamu che50% chechiedza chisingawanzo kuwanikwa pasi.Nekuwedzera kwekushandiswa kweyakanyanya kuchena cerium, chinodiwa chepasi risingawanikwi indekisi yezvinyorwa zvecerium zvakakwirira uye zvakakwirira.Cerium oxideis ceric oxide, nhamba yeCAS ndeye 1306-38-3, molecular formula ndeye CeO2, molecular weight: 172.11;Cerium oxide ndiyo yakanyanya kugadzikana oxide yerare Earth element cerium.Iyo yakachenuruka yero yakasimba pakudziya kwekamuri uye inosviba kana ichipisa.Cerium oxide inoshandiswa zvakanyanya mumidziyo ye luminescent, catalysts, polishing powder, UV kudzivirira uye zvimwe zvinhu nekuda kwekuita kwayo kwakanaka.Mumakore achangopfuura, zvakamutsa kufarira kwevatsvakurudzi vakawanda.Kugadzirira uye kuita kwecerium oxide kwave nzvimbo yekutsvagisa mumakore achangopfuura.
Production Process
Method 1: Kurudzira pakamuri tembiricha, wedzera sodium hydroxide solution ye 5.0mol/L kune cerium sulfate solution ye 0.1mol/L, gadzirisa iyo pH kukosha kuve yakakura kupfuura gumi, uye kunaya kwemvura kunoitika.Sediment yacho yakapombwa, yakagezwa kakawanda nemvura ine deionized, yobva yaomeswa mu90 ℃oven kwemaawa makumi maviri nemana.Mushure mekugaya uye kusefa (saizi yediki isingasviki 0.1mm), cerium oxide inowanikwa uye inoiswa munzvimbo yakaoma yekuvharirwa kuchengetwa.Method 2: Kutora cerium chloride kana cerium nitrate seyakabikwa, kugadzirisa pH kukosha kusvika 2 nemvura yeammonia, kuwedzera oxalate kuti iite cerium oxalate, mushure mekupisa, kurapa, kupatsanurwa uye kugeza, kuomesa pa110 ℃, uye kupisa ku cerium oxide pa900. ~ 1000 ℃.Cerium oxide inogona kuwanikwa nekudziya musanganiswa wecerium oxide uye kabhoni poda pa1250 ℃ mumhepo yecarbon monoxide.
Application
Cerium Oxide inoshandiswa kune zvinowedzera zvegirazi indasitiri, ndiro yegirazi kugaya zvinhu, uye yakawedzerwa kune magirazi ekukuya girazi, optical lenses, kinescope, bleaching, kujekesa, girazi reultraviolet mwaranzi uye kunyudzwa kwetambo yemagetsi, zvichingodaro.Inoshandiswawo senge anti-reflector yegirazi remaziso, uye cerium inoshandiswa kugadzira cerium titanium yero kuita kuti girazi riyere.Iyo isingawanzo pasi oxidation kumberi ine imwe pesvedzero pakristaro uye zvimiro zvegirazi ceramics muiyo CaO-MgO-AI2O3-SiO2 system.Mhedzisiro yetsvagiridzo inoratidza kuti kuwedzerwa kweiyo oxidation kumberi kwakakodzera kunobatsira kuvandudza kujekesa kwegirazi remvura, kubvisa mabhuru, kuita kuti chimiro chegirazi chikwane, uye kuvandudza michina uye alkali kuramba kwezvinhu.Iyo yakakwana yekuwedzera huwandu hwecerium oxide i1.5, kana ichishandiswa mu ceramic glaze uye indasitiri yemagetsi sepiezoelectric ceramic penetrant.Inoshandiswawo mukugadzira yakakwira chiitiko catalyst, gasi mwenje incandescent chivharo, X-ray fluorescent skrini (inonyanya kushandiswa mune lens polishing agent).Rare Earth cerium polishing powder inoshandiswa zvakanyanya mumakamera, lens kamera, TELEVISION picture chubhu, lens, zvichingodaro.Inogonawo kushandiswa muindasitiri yegirazi.Cerium oxide uye titanium dioxide zvinogona kushandiswa pamwechete kugadzira girazi reyero.Cerium oxide yegirazi decolorization ine zvakanakira kushanda kwakadzikama pakupisa kwepamusoro, mutengo wakaderera uye hapana kutorwa kwechiedza chinooneka.Uye zvakare, cerium oxide inowedzerwa kune girazi rinoshandiswa muzvivakwa uye mota kuderedza kufambiswa kwechiedza che ultraviolet.Pakugadzirwa kwezvinhu zvisingawanzo mwenje wepasi, cerium oxide inowedzerwa se activator mune isingawanzo pasi tri-ruvara phosphors inoshandiswa mune luminescent zvinhu zvemarambi ekuchengetedza simba uye phosphors anoshandiswa muzviratidzo uye neradio detectors.Cerium oxide zvakare chinhu chakasvibirira chekugadzirira kwesimbi cerium.Uye zvakare, mune semiconductor zvinhu, yakakwira-giredhi pigments uye photosensitive girazi sensitizer, mota exhaust purifier yakashandiswa zvakanyanya.Iyo inokonzeresa yekucheneswa kwemagetsi emotokari inonyanya kuumbwa nemuzinga we ceramic (kana simbi) inotakura uye pamusoro inobatidzwa coating.Iyo yakabatiswa coating ine nzvimbo yakakura ye gamma-trioxide, huwandu hwakakodzera hweokisidhi inodzikamisa nzvimbo yepasi, uye simbi ine catalytic chiitiko chakaparadzirwa mukati mejasi.Kuti uderedze iyo inodhura Pt, Rh dosage, wedzera dosage yePd yakachipa, dzikisa mutengo wecatalyst pasina kudzikisa mota exhaust purification catalysts pasi pechisimbiso chekushanda kwakasiyana, inowanzoshandiswa Pt.Pd.Kuitwa kweRh ternary catalyst coating, kazhinji nzira yekunyudza yakazara yekuwedzera imwe huwandu hwecerium oxide uye lanthanum oxide, inoumba isingawanzo yepasi catalytic mhedzisiro yakanaka.Yakakosha simbi ternary catalyst.Lanthanum oxide uye cerium oxide zvakashandiswa sezvibatsiro zvekuvandudza kushanda kwe ¦ A-Alumina yakatsigira noble metal catalysts.Maererano netsvagiridzo, iyo catalytic mechanism yecerium oxide uye lanthanum oxide inonyanya kuvandudza iyo catalytic chiitiko cheiyo inoshanda coating, otomatiki kugadzirisa iyo air-mafuta ratio uye catalysis, uye kugadzirisa kupisa kugadzikana uye mechanical simba remutakuri.