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Siv sulfuric acid lossis sodium hydroxide nyob rau hauv siab kom decompose hauv nruab nrab alkaline kom yaj cov cab. Tom qab kev sib tawg, cov hlau tseem ceeb tau tso rau hauv qhov seem, thiab tom qab ntawd nrog cov tshuaj chlorine thiab hydrochloric acid los ua kom cov pab pawg platinum hlau nkag mus rau hauv kev daws teeb meem. Hauv cov txheej txheem alkaline, txhua SiO2 muaj nyob hauv tsis tau yaj, uas tiv thaiv kev ua tiav ntawm cov hlau muaj txiaj ntsig. Nws tsis pom zoo kom rov tsim cov neeg nqa khoom ntau los ntawm hom txheej txheem no vim tias γ-Al2O3 tau hloov pauv mus rau qhov tsis tuaj yeem hloov pauv α-Al2O3 thaum siv cov tshuaj tiv thaiv zoo.
Ntawm qhov tod tes, ntau txoj hauv kev yaj cov hlau uas muaj txiaj ntsig thiab rov ua kom zoo ntawm cov hlau muaj txiaj ntsig muaj ntau yam kev hloov pauv, uas paub zoo, xws li siv cov tshuaj hydrochloric acid thiab chlorine, hydrochloric acid thiab nitric acid, lossis hydrochloric acid thiab hydrogen peroxide. Ib qho ntawm cov teeb meem tseem ceeb nrog txhua txoj hauv kev no yog tias nws nyuaj rau cais cov platinum pawg hlau thiab cov hlau tsis muaj hlau hauv kev daws teeb meem. Kev rov zoo los ntawm cov txheej txheem no, tshwj xeeb yog kev rov zoo ntawm rhodium, tsis txaus siab.
Qhov tsis zoo ntawm cov txheej txheem kev tsim kho hydrometallurgical tuaj yeem sau ua ke raws li hauv qab no:
① Cov dej khib nyiab loj heev;
②Lub nkoj thauj khoom yuav tsum raug teeb tsa tom qab muab pov tseg;
③ Poob ntawm cov hlau muaj nqi;
LAluminium sulfate daws, niam cawv ntawm aluminate, tsis yooj yim siv.
Lawv qhov zoo yog: ua haujlwm kub tsawg; nyob rau hauv cov ntaub ntawv ntawm cov hauv paus hlau qis, cov ntsiab lus hlau muaj txiaj ntsig tau yooj yim los saib xyuas thiab txheej txheem nag lossis daus yog yooj yim los nqa tawm.
https://www.jonyautoparts.com/catalytic-converter/