I-Nano platinum (Pt) yeendlela ezintathu zokuncedisa kunyango lokukhupha imoto

I-catalyst yeendlela ezintathu yi-catalyst esetyenziswa kwindlela ezintathu zokuguqula i-catalytic ye-exhaust yemoto. Isetyenziselwa ukuguqula i-catalytically ukukhupha imoto ngaphambi kokuba ikhutshwe, kunye ne-oxidize CO, HC, kunye ne-NOx ngokulandelanayo, ukunciphisa iigesi ezinobungozi kwi-carbon dioxide (CO2), i-nitrogen (N2), kunye nomphunga wamanzi (H2O) ongenabungozi ebantwini. impilo.
I-Pt lelona candelo lisebenzayo lisetyenziswa ekucoceni umbhobho wemoto. Igalelo layo eliphambili kukuguqulwa kwe-carbon monoxide kunye ne-hydrocarbons. I-Pt inekhono elithile lokunciphisa i-nitrogen monoxide, kodwa xa i-NO i-concentration iphezulu okanye i-SO2 ikhona, ayisebenzi njenge-Rh, kunye ne-platinum nanoparticles (NPs) iya ku-sinter ngokuhamba kwexesha. Kuba iplatinam iyakudityaniswa okanye ide ithobeke kumaqondo obushushu aphezulu, iya kuthi ke yona inciphise wonke umsebenzi we-catalytic. Uphononongo luqinisekisile ukuba i-athomu yesinyithi yeqela leplatinam inokutshintshwa phakathi kwe-nanoparticles yensimbi kunye ne-bulk perovskite matrix, ngaloo ndlela ivuselela umsebenzi we-catalytic.
Iintsimbi ezixabisekileyo zinokukhethwa okubalaseleyo. Kukho iziphumo ezintsonkothileyo ezihambelanayo okanye iziphumo ezihambelanayo phakathi kweentsimbi ezixabisekileyo kunye naphakathi kweentsimbi ezixabisekileyo kunye nabakhuthazi. Iindibaniselwano ezahlukeneyo zentsimbi exabisekileyo, ulungelelwaniso kunye nobuchwepheshe bokulayisha bunempembelelo enkulu kubume bomphezulu, ubume bomphezulu, umsebenzi we-catalytic kunye nobushushu obuphezulu bokuchasa i-catalyst. Ukongeza, iindlela ezahlukeneyo zokongeza abakhuthazi nazo ziya kuba nefuthe elithile kwi-catalyst. Isizukulwana esitsha sePt-Rh-Pd ternary catalysts siye saphuhliswa ngokusebenzisa ulungelelwaniso olusebenzayo phakathi kwePt, Rh kunye nePd, ephucule kakhulu ukusebenza kwe-catalyst.