Qhov sib txawv tseem ceeb ntawm cov neeg txhawb nqa catalyst thiab cov tshuaj lom catalyst yog tias cov neeg txhawb nqa catalytic tuaj yeem ua kom cov catalyst muaj txiaj ntsig zoo, thaum cov tshuaj lom catalyst tuaj yeem txo cov txiaj ntsig ntawm catalyst.
Catalysts thiab inhibitors yog cov tshuaj lom neeg. Ob pawg ntawm cov tebchaw no qhia txog kev ua haujlwm sib txawv hauv cov tshuab lom neeg thiab tshuaj lom neeg. Lawv koom nrog tshuaj lom neeg tab sis tsis noj. Lub catalyst yog cov tshuaj sib xyaw ua ke uas tuaj yeem nce tus nqi ntawm cov tshuaj tiv thaiv yam tsis tau noj. Yog li ntawd, qhov sib xyaw no tuaj yeem txuas ntxiv ua dua. Vim li no, tsuas yog ib qho me me ntawm cov catalyst yuav tsum muaj rau qee yam tshuaj tiv thaiv.
Feem ntau, lub catalyst muab lwm txoj hauv kev rau cov tshuaj tiv thaiv tshuaj los ntawm kev txo qhov ua kom lub zog ntawm cov tshuaj tiv thaiv. Yog li ntawd, cov catalyst ua ke nrog cov reactant los tsim cov khoom nruab nrab; Tom qab ua tiav qhov xav tau cov tshuaj tiv thaiv, cov catalyst tawm hauv nruab nrab thiab rov tsim dua.
Tus Txhawb Nqa Catalyst yog dab tsi?
Tus txhawb nqa catalyst yog ib yam khoom uas tuaj yeem ua rau kom muaj txiaj ntsig ntawm cov catalyst. Feem ntau, cov khoom no yog tov nrog cov catalyst-muaj cov tshuaj tiv thaiv kev sib xyaw kom ua tau zoo dua. Catalyst txhawb nqa tsuas yog pab txhim kho cov tshuaj tiv thaiv tag nrho. Ntxiv mus, tus txhawb nqa catalyst qhia tsis muaj lossis me me catalytic effect lossis nws cov khoom.
Daim duab 01: Harber's Cycle
Piv txwv li, molybdenum lossis sib xyaw ntawm cov poov tshuaj thiab txhuas oxides hauv Harber lub voj voog ua haujlwm txhawb nqa rau cov catalysts. Feem ntau, cov catalyst yog ntxiv rau cov tshuaj tiv thaiv sib tov thaum pib ntawm cov tshuaj tiv thaiv, thaum lub catalyst txhawb ntxiv thaum lub sij hawm cov tshuaj tiv thaiv kom cov efficiency.
Catalyst Poison yog dab tsi?
Cov tshuaj lom catalyst yog ib yam khoom uas tuaj yeem txo cov txiaj ntsig ntawm catalyst. Yog li ntawd, nws ua raws li ib tug inhibitor rau lub catalyst thiab cov tshuaj tiv thaiv nyob rau hauv uas nws koom nrog. Raws li txoj cai, catalysts tsis noj thaum lub sij hawm tshuaj tiv thaiv. Yog li ntawd, lub luag hauj lwm ntawm catalyst tshuaj lom tsuas yog txo cov nyhuv uas pom los ntawm cov catalyst nyob rau hauv cov tshuaj tiv thaiv. Qee zaum, cov tshuaj lom catalyst tuaj yeem txo qis cov tshuaj tiv thaiv lossis tuaj yeem rhuav tshem cov txheej txheem tshuaj tiv thaiv tag nrho.
Raws li ib qho piv txwv, cov platinum catalyst uas muaj txiaj ntsig zoo hauv oxidation ntawm hydrogen tuaj yeem raug tshuaj lom siv cov pa roj carbon monoxide ua cov tshuaj lom catalyst. Ib yam li ntawd, peb tuaj yeem siv hydrogen sulfide lossis carbon monoxide los rhuav tshem cov haujlwm ntawm cov hlau catalysts hauv Harber tus txheej txheem.
Qhov txawv ntawm Catalyst Promoter thiab Catalyst Poison yog dab tsi?
Ib tus catalyst yog cov tshuaj lom neeg uas tuaj yeem ua rau nce tus nqi ntawm cov tshuaj tiv thaiv yam tsis tas siv nws tus kheej. Muaj kev txhawb nqa thiab tshuaj lom rau catalysts. Qhov sib txawv tseem ceeb ntawm catalyst txhawb nqa thiab catalyst tshuaj lom yog tias catalytic txhawb nqa tuaj yeem ua kom cov catalyst muaj txiaj ntsig, thaum cov tshuaj lom catalyst tuaj yeem txo cov txiaj ntsig ntawm catalyst. Yog hais tias peb xav txog cov piv txwv ntawm catalyst promoters thiab tshuaj lom, molybdenum los yog ib tug sib tov ntawm poov tshuaj thiab txhuas oxides nyob rau hauv Harber lub voj voog ua raws li promoters rau catalysts, thaum lub platinum catalyst uas yog pab tau nyob rau hauv lub oxidation ntawm hydrogen yuav raug lom siv carbon monoxide raws li ib tug catalyst tshuaj lom..
Cov hauv qab no qhia txog qhov sib txawv ntawm cov catalyst txhawb nqa thiab cov tshuaj lom catalyst hauv daim ntawv qhia rau ib sab ntawm kev sib piv.
Summary – Catalyst Promoter vs Catalyst Poison
Muaj ob hom kev sib txuas uas tuaj yeem cuam tshuam rau kev ua haujlwm ntawm cov catalyst: catalyst promoters thiab catalyst tshuaj lom. Qhov sib txawv tseem ceeb ntawm catalyst txhawb nqa thiab catalyst tshuaj lom yog tias catalytic txhawb nqa tuaj yeem ua kom cov txiaj ntsig ntawm catalyst, qhov catalyst tshuaj lom tuaj yeem txo cov txiaj ntsig ntawm catalyst.
