Njengoba sonke sazi, amaminerali omhlaba angavamile e-China ikakhulukazi akhiwa ngokukhanya okukhanyayo komhlaba okuvamile, lapho i-akhawunti ye-lanthanum ne-cerium engaphezu kuka-60%. Ngokwanda kwe-Rare Earth Generen Magnet Izinto zokwakha, izinto ezingandile zomhlaba i-LUMINESCENTITION, Umhlaba Ongavamile Womhlaba Emkhakheni We-Metallurgical futhi unesidingo somhlaba esisezingeni eliphakeme e-CE China imisebe ephakathi nendawo kanye nokusetshenziswa kwezinsizakusebenza zomhlaba ezingavamile eChina. Kutholakale ukuthi izinto zomhlaba ezikhanyayo zibonisa ukusebenza okuhle kwe-catalytic kanye nokusebenza kahle kwenqubo yokusabela kwamakhemikhali ngenxa yesakhiwo sabo esiyingqayizivele se-electron Shell. Ngakho-ke, usebenzisa ukukhanya komhlaba ongavamile njenge-catalytic material kuyindlela enhle yokusetshenziswa okuphelele kwezinsiza zomhlaba ezingavamile. I-Catalyst uhlobo lwento engasheshisa ukusabela kwamakhemikhali futhi ayidliwanga ngaphambi nangemva kokuphendula. Ukuqinisa ucwaningo oluyisisekelo lweRare Earth Catalysis akunakuthuthukisa ukusebenza kahle kokukhiqiza, kepha futhi gcina izinsiza namandla kanye nokunciphisa ukungcoliswa kwemvelo, okuhambisana nokuqondisa kwamasu okuthuthuka okuqhubekayo.
Kungani izinto zomhlaba ezingavamile zinomsebenzi we-catalytic?
Izinto zomhlaba ezingavamile zinesakhiwo esikhethekile se-elekthronikhi yangaphandle (4f), esisebenza njenge-athomu eliphakathi lenkimbinkimbi futhi linezinombolo ezihlukene zokuxhumana ezisukela ku-6 kuye kwayi-12. Ngoba i-4F ine-realence eyisikhombisa ye-electron ama-elektroni ngekhono le-bonding, idlala indima 'ye-backup Chemical Bond "noma" i-valence ye-residial ". Ngakho-ke, izinto zomhlaba ezingavamile azigcini nje ngemisebenzi ye-catalytic kuphela, kepha futhi zingasetshenziswa njengezengezo noma ama-cocatalysts ukwenza ngcono ukusebenza kwe-catalytic kwama-catalysts, ikakhulukazi amandla okulwa nokuguga.
Njengamanje, indima ye-nano certium oxide kanye nano lanthanum oxide ekwelapheni ukuphuma kwezimoto sekugxilwe okusha.
Izakhi eziyingozi ekuqedweni kwezimoto ikakhulukazi zibandakanya i-CO, HC ne-Nox. Umhlaba ongandile osetshenziswe ku-Rare Earth Actification Workification Workification Workification Persication Cushitique Stivishinist Catalyst ikakhulukazi iyingxube ye-certium oxide, i-praneodymium oxide kanye ne-lanthanum oxide. I-Rare Earth Ackopitive Workification Humotifing Pertification Percalyst yakhiwa ama-oxide ayinkimbinkimbi womhlaba ongavamile noCobalt, Manganese kanye ne-Lead. Kuluhlobo lwe-catalyst ye-ternary nge-perovskite, uhlobo lwe-spinel nesakhiwo, lapho i-certium oxide iyingxenye esemqoka.Ukuthola izici ze-redox ze-cerrium oxide, izakhi zegesi yokuphelelwa amandla zingalawulwa ngempumelelo.
ICatalyst ye-Automobile Working Clalyst yakhiwa ikakhulukazi i-HoneyCom Curamic (noma i-Metal) Carriers (noma i-Metal) yenethiwekhi kanye ne-coating ecushiwe. I-coatis ecushiwe yakhiwa yindawo enkulu γ-al2o3, inani elifanele le-oxide lokuzinza komhlaba nendawo yokuzinza kanye ne-catalytically metal esebenzayo ehlakazekile kwi-coating. Ukunciphisa ukusetshenziswa kwe-PT ebizayo ne-HRH, kwandise ukusetshenziswa kwe-PD eshibhile futhi kunciphise izindleko ze-Catalyst, inani elithile le-CEO2 neLa2o3 livame ukungezwa ekusebenzeni kwe-PT-PD-RD-RH TERALYTST yokwakha umhlaba ojwayelekile umphumela we-catalytic. I-LA2O3 (UG-LA01) ne-CEO2 yasetshenziswa njengabanikezeli benze ngcono ukusebenza kwe-talyysts yensimbi esekelwa ama-noble. Ngokusho kocwaningo, i-CEO2, indlela eyinhloko yeLa2o3 ku-Noble Metal Catalysts imi ngale ndlela elandelayo:
1. Thuthukisa umsebenzi we-catalytic we-coatic esebenzayo ngokungeza i-CEO2 ukuze ugcine izinhlayiya zensimbi eziyigugu ezihlakazekile kwinhlanganisela esebenzayo, ukuze ugweme ukuncishiswa kwamaphoyinti we-catalytic lattice kanye nomonakalo owenziwe umsebenzi obangelwa yisono. Ukungeza i-CEO2 (UG-CE01) ku-PT / γ-al2o3 kungasabalalisa ku-γ-al2o3 kungqimba eyodwa (inani eliphakeme lokuhlakazeka okukodwa kungu-0.035g CEO2 / g degree of PT ifinyelela okuphezulu kakhulu. I-Dispention Threshold of CEO2 iyisithamo esihle kakhulu se-CEO2. Esimweni se-oxidation ngaphezulu kwe-600 ℃, i-RH ilahlekelwa ukusebenza kwayo ngenxa yokwakhiwa kwesisombululo esiqinile phakathi kweRh2O3 ne-Al2o3. Ukuba khona kwe-CEO2 kuzokwenza buthaka ukusabela phakathi kweRhar ne-Al2o3 futhi kugcinwe kusebenze ngoRhar. I-LA2O3 (UG-LA01) ingavimba nokukhula kwezinhlayiya ze-PT Ultrafine.Adding CEO2 neLa2O3 (UG-LA01), kwatholakala ukuthi ukwenziwa kwe-CEO2 kuthuthukise ukuncishiswa kwe-PD kumthwali futhi kwaveza ukuncishiswa kwe-synergistic. Ukuhlakazeka okuphezulu kwe-PD nokusebenzisana kwayo nge-CEO2 ku-PD / γ2AL2O3 kuyisihluthulelo somsebenzi ophakeme we-catalyst.
2. Ukulungiswa okuzenzakalelayo komoya okuzenzakalelayo (ac f) lapho izinga lokushisa lemoto likhuphuka, noma lapho imodi yokushayela kanye nokushintsha kwejubane, izinga lokushintshana lokuphelelwa yisikhathi, elenza izimo zokusebenza zegesi yokuhlanza igesi, ezithinta ukusebenza kwayo kwe-catalytic. Kuyadingeka ukulungisa isilinganiso se-π Fuel somoya esilinganisweni se-stoichiometric sabangu-1415 ~ 1416, ukuze i-catalyst ingenele i-valence oxide (ce4 + Πce3 +), enezindawo ezinhle ze-semiconductor, futhi inekhono elihle kakhulu le-oxygen kanye nokukhipha umthamo. Lapho isilinganiso se-π F sishintsha, i-CEO2 singadlala indima enhle kakhulu ekushintsheni ngamandla isilinganiso se-air-fuel ratio. Okungukuthi, u-O2 ukhululwe lapho uphethiloli usuphezulu ukusizakala ne-hydrocarbon oxidize; Uma kwenzeka umoya owengeziwe, i-CEO2-X idlala inciphise indima futhi iphenduke nge-nox ukususa i-nox kusuka kugesi ophelelwe yi-CEO ukuthola u-CEO2.
I-3. Umphumela we-cocatalyst lapho ingxube ye-ac f isesilinganisweni se-stoichiometric, ngaphandle kokusabela kwe-oxidation of H2, CO, HC kanye ne-cocatalyst ye-Nox, CEO2 njenge-cocatalyst futhi kunciphisa ukusabela kwegesi yamanzi futhi kunciphise okuqukethwe yi-CO ne-HC. I-LA2O3 ingathuthukisa izinga lokuguqulwa ekuphenduleni kwegesi yamanzi kanye nokuphendula kwe-hydrocarbon steam Reform Reaction.I-Hydrogen ekhiqizwayo inenzuzo ekunciphiseni kwe-NOX. Ukungeza i-LA2O3 ku-PD / CEO2 -γ-AL2O3 ye-Methanol Decromition, kwatholakala ukuthi ukungezwa kweLa2o3 kuvinjelwe ukwakheka komkhiqizo we-Dimethyl etheth ethery Lapho okuqukethwe kweLa2o3 kungu-10%, i-catalyst inomsebenzi omuhle futhi ukuguqulwa kwe-methanol kufinyelela phezulu (cishe nge-91.4%). Lokhu kukhombisa ukuthi iLa2o3 inokuhlakazeka okuhle ku-γ-Al2o3 Carriers.Furthermore, kwagqugquzela ukuhlakazwa kwe-CEO2 ku-Oxygen ye-PD futhi kwathuthukiswa futhi kuthuthukiswa umsebenzi we-catalystic we-methanol.
Ngokusho kwezimpawu zokuvikelwa kwamanje kwezemvelo kanye nenqubo entsha yokusetshenziswa kwamandla, iChina kufanele ithuthukise izinto eziphakeme zomhlaba ezinamalungelo okusebenza ngamalungelo okusebenza ezinhlamvini, futhi ziveze ukuthuthukiswa kwezobuchwepheshe kwezinto ezihlangene zomhlaba, futhi ziveze ukuthuthukiswa kwezobuchwepheshe ezihlobene nomhlaba ojwayelekile, imvelo namandla amasha.
Njengamanje, imikhiqizo ehlinzekwe yinkampani ifaka i-Nano Zirconia, Nano Titania, Nano Aluminum oxide, nano yttrium oxide, nano yttrium oxide, nano yttrium oxide, nano yptrium oxide, nano lanthanum I-Oxide, uNano tungsten trioxide, uNano Ferroferric Oxide, i-ejenti ye-nano antibacterial kanye ne-graphene.Izinga lomkhiqizo lizinzile, futhi lithengwe kuma-batches ahlukahlukene.
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Isikhathi sePosi: Jul-04-2022