Nyob rau hauv xyoo tsis ntev los no, daim ntawv thov ntawm Lanthhanide reagents hauv cov synthic synthesis tau raug tsim los ntawm kev ua lag luam thiab ciam teb. Ntawm lawv, ntau cov lus qhia txog cov lus tawm tsam tau pom muaj qhov pom tseeb catalysis nyob rau cov tshuaj tiv thaiv carbon-carbon kev ua tiav; Nyob rau tib lub sijhawm, ntau cov lus qhia txog cov neeg sab laj tau pom muaj cov yam ntxwv zoo hauv cov kev cuam tshuam thiab cov organic txo cov kev cuam tshuam los hloov cov pab pawg ua haujlwm. Tsis tshua muaj kev tshawb fawb txog kev ua haujlwm hauv Suav teb thiab tau nce qib suav nrog kev ua haujlwm tseem ceeb rau kev ua liaj ua teb hauv Suav teb. Tsis tshua muaj cua sov carbonate yog yooj yim soluble hauv acid los ua cov ntsev ua kom zoo nkauj ntawm ntau cov ntsev tsis muaj txiaj ntsig yam tsis muaj kev qhia anionic impurities. Piv txwv li, nws tuaj yeem cuam tshuam nrog cov kua qaub muaj zog xws li nitric acid, nitric acid, nitric acid, thiab sulforic acid, thiab sulfruric acid los tsim dej-soluble salts. Refe nrog phosphoric acid thiab hydrofluoric acid los hloov mus rau Insoluble tsis tshua muaj nyiaj ntau rau hauv lub ntiaj teb posphates thiab tshuaj fluorides. Kev hnov mob nrog ntau cov organic acids los ua ke tsis tshua muaj lub ntiaj teb cov organic sib txuas. Lawv tuaj yeem yog cov tub sab ua kom ruaj khov los yog cov quav tawv, lossis tsawg dua soluble nruab nrab yog cov precipitated nyob ntawm cov kev daws teeb meem. Ntawm qhov tod tes, tsis tshua muaj lub ntiaj teb carbonate tuaj yeem decomposate tau decomposate tuaj yeem sib piv rau hauv kev npaj ua kom muaj ntau cov ntaub ntawv tsis tshua muaj txiaj ntsig. Tam sim no, lub zog txhua xyoo tau tawm ntawm lub ntiaj teb muaj ntau dua ib lub hlis twg ntawm kev lag luam hauv ntiaj teb tsis tshua muaj txiaj ntsig ntawm kev lag luam hauv ntiaj teb tsis tshua muaj.
Cerium carbonate yog ib qho kev sib xyaw ua ke ntawm c3ce2o9, ib lub zog molecular ntawm 433.80000, ib qho npau taws ntawm 333 Hauv kev tsim khoom lag luam ntawm cov av hauv qab, cerium carbonate yog cov khoom siv sib xyaw ua ke rau kev npaj ntawm ntau cov ntsev cuav thiab caleines oxide. Nws muaj ntau yam kev siv thiab yog lub teeb pom kev tsis tshua muaj cov khoom lag luam tsis tshua muaj. Cov hydrated cerium carbonate siv lead ua qauv ua ke los ntawm cov qauv roj ua ke los ntawm cov khoom siv roj ntsha ua ke, thiab cov qauv plaub hau tau ua tiav, thiab ua rau muaj kev sib tsoo ntawm cov khoom siv hluav taws xob ua ke, yog li cov khoom siv hluav taws xob tsis muaj zog, yog li cov khoom siv hluav taws xob tsis muaj zog, yog li cov khoom siv hluav taws xob ua ke, yog li cov khoom siv hluav taws xob ua ke, yog li cov khoom siv hluav taws xob tsis muaj zog, yog li cov khoom siv hluav taws xob ua ke, Lub cerium carbonate conventional tsim nyob rau hauv kev lag luam tam sim no tsuas muaj tsuas yog 42-46% ntawm tag nrho lub ntiaj teb tom qab kev tsim tawm ntawm cerium carbonate.
Ib hom dej haus qis, ruaj khov ua tau zoo, cov txheej txheem tsis muaj zog, thiab cov txheej txheem tsis muaj txiaj ntsig thiab muaj ib leeg-kauj ruam rau kev ua kom tiav ntawm cov av muaj zog cerium nrog ntau tus nqi ntawm lub ntiaj teb tsis tshua muaj. Cov txheej txheem tswv yim hauv qab no yog los ntawm txoj kev siv los npaj cov roj cerium ntawm 95 ° C, thiab Ammonium Biceple, thiab Ammonium Biceploonate yog ntxiv rau hauv tas li kev nplawm cov pa roj carbonate. Tus nqi ntawm ammonium bicarbonate yog kho kom cov kua pub ntawm cov kua pub thaum kawg yog tsim nyog kom cov kua pub tawm yog li cov kua tsis muaj. Lub cerium pub kev daws yog tsawg kawg yog ib qho ntawm Cerium chloride aque kua, cerium sulfate aqueous aqueous aqueous aqueous aqueous aqueous aqueous aquees aqueous. Tus R & D Team ntawm Urbanmines Tech. Co., Ltd. tau txais cov txheej txheem tshiab synthesis los ntawm kev ntxiv cov ammonium bicarbonate lossis aqueous ammonium bicarbonate daws.
Cee Cerium Carbonate tuaj yeem siv los npaj cerium oxide, cerium dioxide thiab lwm yam nanomaterials. Cov ntawv thov thiab cov piv txwv muaj raws li hauv qab no:
1. Ib qho kev tawm tsam lub khob violet iav uas muaj zog nqus cov roj tsaj ultraviolet rays thiab daj daj ntawm pom pom. Raws li cov muaj pes tsawg leeg ntawm doda-kua qaub-silica ntab iav manganese dioxide 0.5 ~ 3%. Lub 4 hli tuab iav tau pom lub teeb ntau dua 80%, ultraviolet hloov pauv tsawg dua 15%, thiab kev hloov pauv ntawm wavelengths ntawm 568-590 nm tsawg dua 15%.
2. Lub zog ua kom muaj zog endhotermic-txuag hluav taws xob, uas nws tau tsim los ntawm kev sib xyaw ua ke ntawm cov khoom siv hauv qab no, thiab 8 txog 20 ntu ntawm txhuas oxide. , 4 txog 10 ntu ntawm titanium oxide, 4 txog 10 ntu ntawm cov tshuaj khib nyiab, 0.8 txog 5 ntu ntawm yttrium carromide, thiab 0.01 txog 1.5 ntu ntawm chromium oxide. qhov chaw, 0.01-1.5 seem ntawm kaolin, 0.01-1.5 feem ntawm cov ntaub ntawv tsis tshua muaj carbon, 0.8-5 ntu ntawm txhua cov khoom siv raw yog 1-5 μm; Qhov twg, cov ntaub ntawv tsis tshua muaj xws li 0.01-1.5 ntu ntawm cerium carbonate, 0.01 txog 1.5 ntu ntawm neodymium carbonate thiab 0.01 txog 1.5 seem ntawm promethium nitreetium nitreet; Zaj duab xis ua cov khoom siv yog cov poov tshuaj sodium cov pa roj carbonate; Potassium sodium carbonate yog sib xyaw nrog qhov hnyav ntawm poov tshuaj carbonate thiab sodium carbonate. Qhov hnyav sib xyaw sib piv ntawm cov muab tub lim thiab cov khoom siv ua yeeb yaj kiab yog 2.5: 7.5, 3.8: 6.2 lossis 4.8: 5.2. Ntxiv mus, ib hom kev npaj txoj kev npaj ntawm endothermic lub zog pleev xim yog tus cwj pwm hauv uas muaj cov kauj ruam hauv qab no:
Kauj Ruam 1, kev npaj ntawm cov muab tub lim, ua ntej hnyav 20-35 ntu ntawm silica, 8-10 feem ntawm titanium oxide, thiab 1-5 feem ntawm zinc oxide los ntawm qhov hnyav. , 1 txog 5 ntu ntawm magnesium oxide, 0.8 txog 5 ntu ntawm cov roj ntsha li cas, 0.01 txog 1.5 ntu ntawm cov pa roj carbon, 0.01 txog 1.5 rau 1.5 rau 1.5 rau 1.5 ntu ntawm cov khoom siv kom tau txais kev muab tub lim; Qhov twg, cov khoom tsis tshua muaj lub ntiaj teb muaj xws li 0.01-1.5 ntu ntawm cerium carbonate, 0.01-1.5 ntu ntawm neodymium carbonate thiab 0.01 ~ 1.5 ntu ntawm Promethium nitreetIrte;
Kauj ruam 2, kev npaj ntawm zaj duab xis-ua cov khoom siv, cov khoom ua yeeb yaj kiab ua yeeb yaj kiab yog sodium poov tshuaj carbonate; First We Walassium Carbonate thiab sodium Carbonate Carbonate, thiab tom qab ntawd sib tov lawv tusyees kom tau cov khoom siv ua yeeb yaj kiab; Lub Sodium poov tshuaj Carbonate yog qhov hnyav tib yam ntawm potassium carbonate thiab sodium carbonate yog sib xyaw;
Kauj ruam 3, Kev sib xyaw sib xyaw ntawm cov muab tub lim thiab cov khoom ua yeeb yaj kiab los ntawm qhov hnyav yog 2.5: 5.2, thiab cov sib tov sib xyaw thiab tawg kom muaj kev sib xyaw;
Hauv Kauj Ruam 4, qhov sib xyaw yog pob-milled rau 6-8 teev, thiab tom qab ntawd cov khoom tiav tau los ntawm kev sib tw, thiab lub ntxaij ntawm lub vijtsam yog 1-5 μm.
3. Npaj ntawm ultrasfine cerium oxide: Siv hydrated cerium carbonate raws li cov me me partic oxide nrog tsawg dua 3 μm tau npaj los ntawm ncaj qha pob milling thiab regination. Cov khoom lag luam tau txhua tus muaj cov qauv sau ua ke fluorite. Raws li kev xam ntsuas kub nce ntxiv, qhov me me ntawm cov khoom txo qis, qhov loj me faib loj tuaj ua tau qeeb dua thiab lub crystairinity nce. Txawm li cas los xij, lub peev xwm polishing ntawm peb lub khob sib txawv tau pom tias muaj txiaj ntsig siab kawg ntawm 900 ℃ thiab 1000 ℃. Yog li ntawd, nws ntseeg tau tias kev tshem tawm tus nqi ntawm iav nto tshuaj thaum lub sij hawm polishing yog cuam tshuam heev los ntawm cov particle loj, crystallinity thiab nto kev ua si ntawm cov hmoov polishing.