Ukukhipha i-Molybdenum ku-Molybdenite - Umthofu Oshelelayo Oqinisa Insimbi

I-Molybdenum (Mo, isici 42) ibididekile nomthofu negraphite amakhulu eminyaka. I-ore yayo eyinhloko, i-molybdenite (MoS₂), iyimaminerali ethambile, empunga, eshelelayo ebukeka futhi ezwakala icishe ifane ne-graphite - yomibili ishiya amamaki amnyama ephepheni, womabili anomuzwa onamafutha, futhi womabili avela njengamaflashi ensimbi ampunga. Igama elithi molybdenum livela kwelesiGreki elithimolybdos ('lead'), elibonisa lokhu kudideka kwasendulo. Kwakungu-Carl Wilhelm Scheele owaqala ukwehlukanisa i-molybdenite ku-graphite ngo-1778 ngokuyelapha nge-nitric acid kanye nokubheka i-residite emhlophe (i-molybdic acid, i-H₂MoO₄) engazange ikhiqizwe yi-graphite.

Peter Jacob Hjelm, esebenza ngesiphakamiso sika-Scheele nge-reducation ye-molybdedic 171 yokuqala ye-molybdedic ye-molybdedic yokuqala engu-71. i-asidi ene-carbon. Insimbi yayingcolile (ingcoliswe i-molybdenum carbide ne-oxide), futhi i-molybdenum ehlanzekile ngempela ayizange ikhiqizwe kwaze kwaba ngu-1893 lapho u-Henri Moissan esebenzisa isithando somlilo sikagesi.

I-Molybdenite (MoS₂) iqukethe u-60% we-molybdenum ngobuningi. Inesakhiwo sekristalu esigqinsi esifana nsé ne-graphite - amashidi ama-athomu e-molybdenum ahlanganiswe phakathi kwamashidi ama-athomu esibabule, anamandla abuthaka e-van der Waals phakathi kwezingqimba. Lokhu kuchaza ukushelela kwayo kanye nokusetshenziswa kwayo njengesithambiso esiqinile (i-molybdenum disulfide grease). Ukukhishwa kuhilela ukugazinga ku-molybdenum trioxide (MoO₃) okulandelwa ukunciphisa ikhabhoni.

INGOZI:I-molybdenite egazingiwe ikhiqiza i-sulphur dioxide (SO₂), igesi enobuthi, eklinywayo. Uthuli lwe-Molybdenum trioxide (MoO₃) luyacasula ulwelwesi lwamafinyila futhi lubangela isimo esibizwa ngokuthi i-molybdenosis emfuyweni eklaba emhlabathini ocebile nge-molybdenum. Sebenzisa isivikelo sokuphefumula kulo lonke. Sebenza ngaphandle ngesikhathi sokugazinga.