Platinum palladium precious hlau catalyst yog cov khoom siv hluav taws xob muaj txiaj ntsig zoo heev, nws yog tsim los ntawm Pt thiab Pd thiab lwm yam hlau muaj txiaj ntsig, yog li nws muaj kev ua haujlwm siab catalytic thiab xaiv.Nws tuaj yeem hloov cov khoom tsis zoo hauv cov pa tso pa tawm thiab tig mus rau hauv cov khoom tsis zoo, yog li txo cov pa tawm ntawm cov pa tawm thiab tiv thaiv ib puag ncig thiab tib neeg kev noj qab haus huv uas peb nyob.
Cov ntsiab lus tseem ceeb ntawm platinum thiab palladium catalysts yog cov hlau muaj txiaj ntsig xws li platinum thiab palladium, thiab kev xaiv ntawm cov hlau tseem ceeb no yog qhov tshwj xeeb, tag nrho nyob ntawm daim ntawv thov scenario ntawm cov catalyst thiab cov kev xav tau ntawm cov tshuaj tiv thaiv catalytic.Feem ntau, qhov sib piv loj ntawm platinum thiab palladium hauv platinum thiab palladium catalysts yog 1: 1 lossis 2: 1, thiab qhov sib piv no tuaj yeem ua tiav qhov zoo tshaj plaws catalytic nyhuv.Tsis tas li ntawd, kev txhawb nqa ntawm platinum palladium catalyst kuj tseem ceeb heev, uas muaj kev cuam tshuam loj heev rau kev ua haujlwm ntawm cov catalyst.Cov neeg nqa khoom feem ntau yog aluminium oxide, silicon oxide, yttrium oxide, thiab lwm yam., uas muab cov txheej txheem ruaj khov rau cov catalyst thiab ua kom cov nyhuv catalytic muaj txiaj ntsig zoo.
Cov txheej txheem kev npaj ntawm platinum thiab palladium catalysts muaj xws li impregnation, co-teev, nag lossis daus, sib xyaw lub cev thiab lwm yam.Txoj kev impregnation yog impregnate tus cab kuj tsis zoo (feem ntau yog ib qho oxide) rau hauv cov tshuaj uas muaj platinum thiab palladium ions, thiab tom qab ntawd ua haujlwm ntau yam xws li ziab thiab txo, thiab thaum kawg tau txais platinum thiab palladium catalyst.Txoj kev coprecipitating yog tias cov cab kuj tsis zoo thiab platinum thiab palladium ions tau ntxiv rau cov tshuaj tiv thaiv ua ke, thiab cov platinum thiab palladium ions tau los ua ke rau saum npoo ntawm cov cab kuj tsis zoo los tsim cov platinum thiab palladium catalyst los ntawm kev tswj cov pH nqi thiab kub ntawm cov tshuaj.Lub platinum palladium catalyst tau txais los ntawm txoj kev no muaj cov yam ntxwv ntawm kev ua haujlwm siab, kev xaiv siab thiab kev ruaj ntseg siab, uas ua kom cov kev ua tau zoo thiab kev nyab xeeb ntawm kev kho cov roj khib nyiab.
Thaum siv platinum thiab palladium precious hlau catalysts, peb yuav tsum xyuam xim rau kev nyab xeeb.Ua ntej tshaj plaws, nws yog ib qho tsim nyog yuav tsum tsis txhob muaj qhov xwm txheej txaus ntshai xws li qhib nplaim taws, qhov kub thiab txias thiab hluav taws xob zoo li qub, uas yuav ua rau muaj kev cuam tshuam ntawm catalyst kev ua tau zoo thiab txawm tias muaj kev phom sij.Qhov thib ob, cov catalyst yuav tsum tau kuaj xyuas thiab hloov tsis tu ncua kom ntseeg tau tias nws txoj haujlwm zoo thiab ua tiav cov txiaj ntsig zoo tshaj plaws catalytic.
Post lub sij hawm: Oct-27-2023