Oxidation catalyst
Sechizvarwa chekutanga chinokonzeresa, Pt uye Pd oxidation catalysts inoshandiswa kunze kwenyika.Nekudaro, macatalyst akadaro anogona chete kudzora kuburitswa kwekabhoni monoxide uye mahydrocarbons, saka anonzi / nzira mbiri zero catalysts.Kubva kuma1980, hurumende yeUnited States yakasimudza chiyero chekuburitsa cheNOX chemotokari, kuitira kuti zvigadziriso zvakadaro zvisakwanise kusangana nechiyero uye zvishoma nezvishoma zvinobviswa.
Three way catalyst
Phase I
Sezvo mwero wekuburitsa weNOX wakagadziridzwa, Pt uye Rh catalysts zvabuda sezvinodiwa nenguva.Iyi catalyst inogona panguva imwe chete kuchenesa carbon monoxide, hydrocarbons and oxides of nitrogen, saka inodaidzwa kunzi three-way zero catalyst Iyi itsvakurudzo ye/nzira nhatu 0 catalyst.Zvisinei, iyi catalyst inoda nhamba huru yesimbi dzinokosha dzakadai sePt neRh;Inodhura uye inowanzoita chepfu yemutobvu.Naizvozvo, haina kukodzera kumota dzinoshandisa leaded peturu.
Chikamu II:
Pt neRh zvakatsiviwa zvishoma nePd kudzikisa mutengo wecatalyst.Gadzirira/matatu-nzira 0 catalyst nePt, Rh, Pd semuviri mukuru.Inogona kuchenesa CO, HC uye NO panguva imwe chete.Mabhenefiti ayo ibasa repamusoro, mhedzisiro yakanaka yekuchenesa, hupenyu hurefu, asi mutengo wakakwira.Inoshandiswa zvakanyanya kunze kwenyika;
Danho rechitatu:
Zvese palladium catalyst.Iyo utility modhi ine zvakanakira yekucheneswa panguva imwe chete yeCO, HC uye NOX, mutengo wakaderera, yakanyanya tembiricha yekudziya kugadzikana uye nekukurumidza kudzima maitiro.
Chete nekunyatso kudzora reshiyo yemafuta emhepo mukati mehwindo rakamanikana (kazhinji 14.7 ± 0.25) pedyo neiyo theoretical air-fuel reshiyo inogona kusvibisa zvitatu panguva imwe chete.
Nguva yekutumira: Nov-18-2022