Nano ceriayog ib qho pheej yig thiab dav sivtsawg ntiaj teb oxidenrog me me particle loj, uniform particle loj tis, thiab siab purity. Insoluble hauv dej thiab alkali, me ntsis soluble hauv acid. Nws tuaj yeem siv los ua cov ntaub ntawv polishing, catalysts, catalyst carriers (additives), automotive exhaust absorbers, ultraviolet absorbers, fuel cell electrolytes, electronic ceramics, etc. Nanoscale ceria tuaj yeem cuam tshuam ncaj qha rau kev ua haujlwm ntawm cov ntaub ntawv, xws li ntxiv ultrafine nano ceria rau ceramics. , uas tuaj yeem txo qhov kub ntawm sintering ntawm ceramics, inhibit lattice kev loj hlob, thiab txhim kho qhov ntom ntawm ceramics. Ib cheeb tsam loj tshwj xeeb tuaj yeem txhim kho cov kev ua haujlwm catalytic ntawm catalyst. Nws cov khoom sib txawv valence muab nws cov khoom zoo heev optoelectronic, uas tuaj yeem doped hauv lwm cov khoom siv semiconductor rau kev hloov kho, txhim kho kev ua haujlwm ntawm photon tsiv teb tsaws, thiab txhim kho cov nyhuv photoexcitation ntawm cov khoom.
Siv rau UV nqus
Raws li kev tshawb fawb, lub teeb ultraviolet xws li 280nm txog 320nm tuaj yeem ua rau tawv nqaij tawv nqaij, sunburn, thiab txawm tias mob qog noj ntshav ntawm daim tawv nqaij thaum mob hnyav. Ntxiv nanoscale cerium oxide rau cov tshuaj pleev ib ce tuaj yeem txo qhov teeb meem ntawm ultraviolet hluav taws xob rau tib neeg lub cev. Nano cerium oxide muaj zog nqus cov nyhuv ntawm ultraviolet rays thiab yuav siv tau raws li ib tug ultraviolet absorber rau cov khoom xws li tshuaj pleev thaiv hnub tshuaj pleev ib ce, iav tsheb, sunscreen fibers, coatings, plastics, thiab lwm yam. Cerium oxide yog siv nyob rau hauv cov tshuaj pleev ib ce tshuaj pleev ib ce, uas tsis muaj cov yam ntxwv. nqus cov teeb pom kev zoo, kev xa tawm zoo, thiab kev tiv thaiv UV zoo; Tsis tas li ntawd, txheej amorphous silicon oxide ntawm cerium oxide tuaj yeem txo nws cov kev ua haujlwm catalytic, yog li tiv thaiv qhov tsis zoo ntawm cov tshuaj pleev ib ce los ntawm kev ua haujlwm catalytic ntawm cerium oxide.
Siv rau catalysts
Nyob rau hauv xyoo tas los no, nrog rau kev txhim kho ntawm tib neeg txoj kev ua neej nyob, tsheb tau nce nrov hauv tib neeg lub neej. Tam sim no, tsheb feem ntau hlawv roj av. Qhov no tsis tuaj yeem zam qhov tsim cov pa phem. Tam sim no, ntau tshaj 100 yam khoom tau raug cais tawm ntawm lub tsheb tso tawm, ntawm ntau tshaj 80 yog cov khoom phom sij tshaj tawm los ntawm Tuam Tshoj kev tiv thaiv ib puag ncig kev lag luam, feem ntau suav nrog cov pa roj carbon monoxide, hydrocarbons, nitrogen oxides, cov khoom me me (PM), thiab lwm yam. , tshwj tsis yog rau nitrogen, oxygen, thiab cov khoom siv hluav taws xob xws li carbon dioxide thiab dej vapor, uas yog cov khoom tsis zoo, tag nrho lwm cov khoom muaj teeb meem. Yog li ntawd, kev tswj hwm thiab daws cov pa phem hauv tsheb tau dhau los ua qhov teeb meem ceev uas yuav tsum tau daws.
Hais txog cov khoom siv hluav taws xob hauv tsheb, feem ntau ntawm cov hlau siv los ntawm cov neeg thaum ntxov yog chromium, tooj liab, thiab npib tsib xee, tab sis lawv qhov tsis zoo yog qhov kub thiab txias, muaj kev cuam tshuam rau kev lom, thiab kev ua haujlwm tsis zoo catalytic. Tom qab ntawd, cov hlau tseem ceeb xws li platinum, rhodium, palladium, thiab lwm yam tau siv los ua cov catalysts, uas muaj qhov zoo xws li lub neej ntev, kev ua haujlwm siab, thiab kev ua kom huv si zoo. Txawm li cas los xij, vim yog tus nqi siab thiab tus nqi ntawm cov hlau tseem ceeb, lawv kuj ua rau muaj tshuaj lom vim phosphorus, sulfur, txhuas, thiab lwm yam, ua rau nws nyuaj rau kev txhawb nqa.
Ntxiv nano ceria rau automotive pa purification agents muaj cov nram qab no zoo piv rau ntxiv non nano ceria: cov particle tshwj xeeb nto ntawm nano ceria yog loj, txheej txheej yog siab, cov ntsiab lus ntawm teeb meem impurities yog tsawg, thiab cov pa oxygen cia muaj peev xwm. nce; Nano ceria yog nyob rau ntawm nanoscale, kom ntseeg tau tias qhov chaw siab tshwj xeeb ntawm cov catalyst nyob rau hauv qhov chaw kub kub, yog li txhim kho kev ua haujlwm catalytic zoo heev; Raws li ib qho ntxiv, nws tuaj yeem txo cov nyiaj platinum thiab rhodium siv, hloov kho cov huab cua sib piv thiab cov nyhuv catalytic, thiab txhim kho thermal stability thiab txhua yam muaj zog ntawm cov cab kuj.
Siv rau kev lag luam steel
Vim nws cov qauv atomic tshwj xeeb thiab kev ua haujlwm, cov ntsiab lus tsis tshua muaj hauv ntiaj teb tuaj yeem siv los ua cov khoom ntxiv hauv cov hlau, cam khwb cia hlau, txhuas, npib tsib xee, tungsten thiab lwm yam ntaub ntawv los tshem tawm impurities, refine nplej thiab txhim kho cov khoom muaj pes tsawg leeg, yog li txhim kho cov neeg kho tshuab, lub cev thiab Ua cov khoom ntawm alloys, thiab txhim kho thermal stability thiab corrosion kuj ntawm alloys. Piv txwv li, nyob rau hauv kev lag luam steel, tsis tshua muaj lub ntiaj teb raws li additives yuav purify molten steel, hloov lub morphology thiab tis ntawm impurities nyob rau hauv nruab nrab ntawm cov hlau, refine grains, thiab hloov cov qauv thiab kev ua tau zoo. Kev siv nano ceria ua cov txheej thiab cov khoom ntxiv tuaj yeem txhim kho oxidation tsis kam, kub corrosion, dej corrosion, thiab sulfurization zog ntawm high-temperature alloys thiab stainless hlau, thiab kuj siv tau raws li ib tug inoculant rau ductile hlau.
Siv rau lwm yam
Nano cerium oxide muaj ntau lwm yam kev siv, xws li siv cerium oxide raws li kev sib xyaw oxides li electrolytes hauv cov roj hlwb, uas tuaj yeem muaj cov pa oxygen dissociation siab tam sim no ntom ntom ntawm 500 ℃ thiab 800 ℃; Qhov sib ntxiv ntawm cerium oxide thaum lub sij hawm vulcanization txheej txheem ntawm roj hmab tuaj yeem muaj qee yam kev hloov pauv ntawm cov roj hmab; Cerium oxide kuj tseem ua lub luag haujlwm tseem ceeb hauv thaj chaw xws li cov khoom siv luminescent thiab cov khoom sib nqus.
Post lub sij hawm: May-19-2023