Lub ntiaj teb tsis tshua muaj siv nyob rau hauv cov pa purification catalyst feem ntau yog sib xyaw ntawm cerium oxide, oxidation txhaum thiab lanthanum oxide, ntawm uas cerium oxide yog cov khoom tseem ceeb. Vim yog cov yam ntxwv redox ntawm cerium oxide, cov khoom ntawm cov pa tso pa tuaj yeem tswj tau zoo dua, thiab cov pa oxygen tuaj yeem nkag rau hauv qhov chaw txo qis lossis cov pa oxygen noj hauv qhov chaw oxidizing. Nyob rau tib lub sijhawm, qhov sib ntxiv ntawm cov khoom siv hauv ntiaj teb tsis tshua muaj rau cov khoom siv hluav taws xob tuaj yeem txhim kho kev tiv thaiv rau cov hlau lead thiab sulfur lom, kev ruaj ntseg ntawm qhov kub thiab txias, thiab cov yam ntxwv ua haujlwm ntawm huab cua-roj piv ntawm cov catalyst. Thaum kawg, lub ntiaj teb tsis tshua muaj catalysts muaj cov yam ntxwv hauv qab no:
1. Txhim kho thermal stability thiab mechanical zog ntawm catalyst
2. Ua kom muaj kev ua haujlwm thiab cov pa oxygen cia ntawm cov catalyst
3. Ua kom muaj peev xwm tiv thaiv tshuaj lom ntawm cov catalyst
4. Nws muaj cov nyhuv ntawm peb txoj kev catalyst
2. Kev tshawb fawb thiab kev siv lub ntiaj teb tsis tshua muaj hauv kev lag luam pov tseg roj thiab tib neeg kev ua kom huv huv
Tam sim no, kev siv lub ntiaj teb tsis tshua muaj catalytic thev naus laus zis los kho cov khoom siv khib nyiab thiab tib neeg kev sib haum xeeb feem ntau yog tsom rau kev kho cov pa roj carbon monoxide, flue gas desulfurization thiab denitrification, photocatalytic huab cua purification thiab coking dej phwj catalytic purification.
Tuam Tshoj yog nplua nuj nyob rau hauv lub ntiaj teb tsis tshua muaj peev txheej, thiab cov khoom siv hauv ntiaj teb tsis tshua muaj nqi, rov siv tau, tsis muaj kev ua qias tuaj rau ib puag ncig, yog cov ntaub ntawv zoo ib puag ncig, thiab lawv txoj kev loj hlob thiab kev siv yog qhov tseem ceeb rau kev txhim kho ib puag ncig thiab kev lag luam. Nyob rau tib lub sij hawm, raws li ib tug tshwj xeeb catalytic functional Cheebtsam los yog ib tug tseem ceeb co-catalyst, tsis tshua muaj lub ntiaj teb no plays ib tug tseem ceeb luag hauj lwm nyob rau hauv ib tug ntau yam ntawm catalytic cov ntaub ntawv los ntawm kev tsim txiaj ntawm nws catalytic kev ua tau zoo thiab muaj peev xwm los tiv thaiv tshuaj lom, thiab kuj muab tej yam kev mob rau lub transformation. ntawm ntau yam catalysts rau industrialization.