Nano platinamu (Pt) ya njira zitatu zothandizira kutulutsa utsi wamagalimoto

Chothandizira chanjira zitatu ndi chothandizira chomwe chimagwiritsidwa ntchito posinthira njira zitatu zosinthira utsi wamagalimoto. Amagwiritsidwa ntchito kusinthira utsi wagalimoto usanatulutsidwe, komanso kuti oxidize CO, HC, ndi NOx motsatana, kuchepetsa mpweya woipa kukhala carbon dioxide (CO2), nayitrogeni (N2), ndi nthunzi wamadzi (H2O) omwe alibe vuto kwa munthu. thanzi.
Pt ndiye chida choyambirira kwambiri chogwiritsira ntchito poyeretsa utsi wamagalimoto. Chothandizira chake chachikulu ndikutembenuka kwa carbon monoxide ndi ma hydrocarbon. Pt ali ndi mphamvu yochepetsera ya nayitrogeni monoxide, koma pamene NO ndende ndi mkulu kapena SO2 alipo, si monga Rh, ndi platinamu nanoparticles (NPs) adzakhala sinter pa nthawi. Popeza platinamu idzaphatikizana kapena kutsika pansi pa kutentha kwakukulu, idzachepetsanso ntchito yonse yothandizira. Kafukufuku watsimikizira kuti platinamu gulu maatomu zitsulo akhoza kusinthana pakati zitsulo nanoparticles ndi chochuluka perovskite masanjidwewo, potero reactivate chothandizira ntchito.
Zitsulo zamtengo wapatali zimakhala ndi catalytic selectivity. Pali zovuta zolumikizana kapena zolumikizana pakati pa zitsulo zamtengo wapatali komanso pakati pa zitsulo zamtengo wapatali ndi zolimbikitsa. Kuphatikizika kwachitsulo chamtengo wapatali, ma ratios ndi matekinoloje otsitsa ali ndi chikoka chachikulu pakupanga pamwamba, kapangidwe kapamwamba, ntchito yothandiza komanso kukana kwamphamvu kwa sintering chothandizira. Kuonjezera apo, njira zosiyanasiyana zowonjezeretsa otsatsa zidzakhalanso ndi zotsatira zina pa chothandizira. Mbadwo watsopano wa Pt-Rh-Pd ternary catalysts wapangidwa pogwiritsa ntchito mgwirizano pakati pa Pt, Rh ndi Pd, zomwe zathandiza kwambiri kuti ntchito yothandizira ikhale yabwino.