I-Nano platinum (Pt) yendlela-ntathu yokusiza ekulashweni kokukhipha umoya wemoto

I-three way catalyst iyi-catalyst esetshenziswa kusiguquli sezindlela ezintathu se-catalytic of exhaust yezimoto. Isetshenziselwa ukuguqula ukukhishwa kwemoto ngaphambi kokuthi kukhishwe, futhi ku-oxidize i-CO, i-HC, ne-NOx ngokulandelanayo, ukwehlisa amagesi ayingozi abe yi-carbon dioxide (CO2), i-nitrogen (N2), kanye nomhwamuko wamanzi (H2O) ongenabungozi kumuntu. impilo.
I-Pt iyingxenye yokuqala esebenzayo ye-catalytic esetshenziswa ekuhlanzeni i-exhaust yezimoto. Igalelo layo eliyinhloko ukuguqulwa kwe-carbon monoxide nama-hydrocarbons. I-Pt inekhono elithile lokunciphisa i-nitrogen monoxide, kodwa uma ukugxiliswa kwe-NO kuphezulu noma i-SO2 ikhona, ayisebenzi njenge-Rh, futhi i-platinum nanoparticles (NPs) izocwilisa ngokuhamba kwesikhathi. Njengoba i-platinum izonqwabelana noma ngisho ne-sublimate emazingeni okushisa aphezulu, nayo izonciphisa umsebenzi we-catalytic wonkana. Ucwaningo luye lwaqinisekisa ukuthi ama-athomu ensimbi eqembu leplatinamu angashintshaniswa phakathi kwama-nanoparticles ensimbi kanye nenqwaba ye-perovskite matrix, ngaleyo ndlela kusebenze umsebenzi we-catalytic.
Izinsimbi eziyigugu zinokukhetha okuhle kakhulu kwe-catalytic. Kukhona imiphumela ehambisanayo eyinkimbinkimbi noma imiphumela ehambisanayo phakathi kwezinsimbi eziyigugu naphakathi kwezinsimbi eziyigugu nabathuthukisi. Inhlanganisela yensimbi eyigugu ehlukahlukene, izilinganiso kanye nobuchwepheshe bokulayisha bunomthelela omkhulu ekwakhiweni kwendawo, ukwakheka kwendawo, umsebenzi we-catalytic kanye nokumelana nokushisa okuphezulu kwe-sintering ye-catalyst. Ngaphezu kwalokho, izindlela ezahlukene zokwengeza abagqugquzeli zizophinde zibe nomthelela othile ku-catalyst. Isizukulwane esisha se-Pt-Rh-Pd ternary catalysts sakhiwe ngokusebenzisa ukuxhumana okusebenzayo phakathi kwe-Pt, Rh ne-Pd, okuthuthukise kakhulu ukusebenza kwe-catalyst.