Nano platinum (Pt) yenzira nhatu dzinobatsira mumotokari exhaust kurapwa

Iyo yenzira nhatu-catalyst ndiyo inokonzeresa inoshandiswa mune matatu-nzira inoshandura inoshandura yemotokari exhaust. Inoshandiswa kushandura zvine simba kubuda kwemota isati yaburitswa, uye kuita oxidize CO, HC, uye NOx zvichiteerana, kuderedza magasi anokuvadza kuita carbon dioxide (CO2), nitrogen (N2), uye mhute yemvura (H2O) isingakuvadzi kuvanhu. utano.
Pt ndiyo yekutanga catalytic inoshanda chikamu chinoshandiswa mumotokari exhaust kuchenesa. Mupiro wayo mukuru kutendeuka kwecarbon monoxide uye hydrocarbons. Pt ine humwe hunhu hwekudzikisa nitrogen monoxide, asi kana iyo NO concentration yakakwira kana SO2 iripo, haishande seRh, uye platinum nanoparticles (NPs) ichatadza nekufamba kwenguva. Sezvo platinamu ichizoungana kana kutodzika pasi patembiricha yakakwira, inozoderedza chiitiko chese chinokonzeresa. Zvidzidzo zvakasimbisa kuti maatomu esimbi eplatinamu anogona kuchinjana pakati pesimbi nanoparticles uye yakawanda perovskite matrix, nekudaro kudzoreredza chiitiko checatalytic.
Simbi dzakakosha dzine yakanakisa catalytic selectivity. Pane zvakati kuoma kunzwisisa zvinokonzeresa kana synergistic mhedzisiro pakati pesimbi dzinokosha uye pakati pesimbi dzinokosha nevanokurudzira. Yakasiyana yakakosha simbi musanganiswa, mareshiyo uye tekinoroji yekurodha ine simba rakakura pakuumbwa kwepamusoro, chimiro chepamusoro, chiitiko chinokonzeresa uye nepamusoro-tembiricha sintering kuramba kweiyo catalyst. Pamusoro pezvo, nzira dzakasiyana dzekuwedzera vanosimudzira dzichavawo nekukanganisa pane iyo catalyst. Chizvarwa chitsva chePt-Rh-Pd ternary catalysts chakagadzirwa nekushandisa kurongeka kunoshanda pakati pePt, Rh nePd, izvo zvakavandudza zvakanyanya kuita kwekuita.