Kev xav tau
High reactive nrog oxygen, dej vapor thiab acids vim nws cov ntshiab tawv hlau.
Nws rov qab maj mam nrog dej txias, tab sis tsausmuag nrog dej kub los yog Chav:
Mn +2 h2o → mn (huag) {2}} h2}
Oxidation States
Cov Axidation Oxidation yog +2}}, {}}}} +7.
Hauv emm, mannese feem ntau yog nyob rau hauv{{0 {}} oxidation xeev(Metallic daim ntawv).
Cov tshuaj tiv thaiv nrog cov kua qaub
Tsim kom yooj yim soluble hauv dilute sulfuric acid (h25o4) lossis hydrochloric acid (HCl):
Mn + h2so4 → mnso 4+ h2 ↑
Cov ntawv flammable hydrogen roj (yuav tsum muaj qhov cua).
Oxidation hauv huab cua
Nyob rau hauv chav tsev kub, nws tsim oxide txheej txheej (MNO2) uas tiv thaiv oxidation ntxiv.
Thaum rhuab nyob rau hauv huab cua, nws hlawv nyob rau hauv lub xeev hmoov, tsim manganese oxides:
3mn {+2 o2Δmn3o4
Redox Cwj Pwm
Tus neeg sawv cev muaj zog hauv acidic / alkaline ib puag ncig (piv txwv li, txo tsis muaj 3- rau NH3).
Tsim ntawm alloys
Nws ua ke nrog cov hlau, txhuas, thiab tooj liab los ua cov tshuaj corrosion-resistant alloys (piv txwv li, stainless hlau).
Catalytic kev ua ub no
Nws ua raws li kev ua yeeb yam hauv cov khoom siv hauv cov organic thiab hydrogenation hydrogenation.
Cuam tshuam ntawm kev nyiam huv
Kev Purity (ntau dua lossis sib npaug rau 99.7%) minimizes tsis muaj kev cuam tshuam tsis zoo hauv cov txheej txheem kev muaj.
Cov Lus Qhia Kev Nyab Xeeb Kev Nyab Xeeb:
Paj frammability: Hmoov zoo yog qhov tawg; Khaws deb ntawm cov txim taws / qhib cov nplaim taws.
Kev corrosiveness: Reacts nrog noo noo kom tso hydrogen roj (xyuas kom qhuav cia).
Muaj Tseem Ceeb:
Kev ruaj khov hauv Alloy Matrices nce cov hlau ua rau oxidation thiab sulfidationation.
Nws yog ib qho tsim nyog rau kev sib xyaw ntawm manganese-raws li cov tshuaj (piv txwv li, kmno4, mno2 rau roj teeb).
Cov khoom siv no ua rau muaj emm indispensable nyob rau hauv metallurgy, tshuaj ntsuam kev tsim khoom, thiab lub zog cia thev naus laus zis.