Kuze kube manje, kunezinhlobo eziningiumhlaba ongavamileama-catalysts okuhlanza akhiwe futhi asetshenziswa, nezindlela zabo zokuhlukanisa nazo zihlukene. Ukuhlukaniswa okulula nokunembile kusekelwe ekubunjweni kwe-catalyst, engahlukaniswa ngezinhlobo ezimbili: i-granular ne-honeycomb. Ama-catalyst e-granular ngokuvamile asetshenziswa γ- I-Al2O3 iyisithwali esinomthamo omkhulu womthwalo, ongalayisha u-10% kuya ku-20%umhlaba ongavamilenamanye ama-base metal oxides. Inokumelana nomthelela omuhle, kodwa ukumelana kwayo kokukhipha umoya kuphezulu, okuthinta amandla nomnotho wayo. Ama-catalyst amise okwekhekheba lezinyosi ngokuvamile asebenzisa i-Dongqingshi, i-mullite, i-spodumene, nama-alloys ensimbi njengabathwali, abanomthamo omncane wokulayisha futhi ofanele ukulayisha izinsimbi eziyigugu. Isithwali sezinyosi sinamandla amancane okushisa, ukusebenza kahle kokufudumala, ukusebenza kwamandla, nokusebenza kahle kwezomnotho, futhi okwamanje sisetshenziswa kabanzi njengesithwali. Nakuba indlela yokuhlukanisa ngokusekelwe ekubunjweni kwama-catalysts ilula, ukwakheka kwama-catalysts, ikakhulukazi izingxenye ezisebenzayo, akukwazi ukusho ngokucacile.
Uma amaqembu omsebenzi wama-catalyst ehlukile,umhlaba ongavamileama-catalysts angahlukaniswa ngezinhlobo ezimbili:umhlaba ongavamileama-base metal oxide catalysts kanye ne-rare earth base metal oxide catalysts enamanani omkhondo wama-catalysts ensimbi eyigugu. Okwangaphambili kuwuhlobo lwe-catalyst oluvame ukusetshenziswa njengamanje, olunomphumela omuhle wokuhlanza ku-CO ne-HC, kodwa umphumela wokuhlanzwa ompofu kancane ku-NOx. Lesi sakamuva sinomthelela omuhle wokuhlanza ku-NOx, ngakho-ke kuzoba isiqondiso esiyinhloko sokuthuthukiswa kwama-catalysts okuhlanza igesi e-China.
Isikhathi sokuthumela: Oct-12-2023