hlau ob sulfide

Iron Ob Sulfide: Ib Daim Ntawv Qhia Ua NtejIron ob sulfide, tseem hu ua ferrous sulfide, yog cov tshuaj sib xyaw nrog cov mis FeS. Phau ntawv qhia no muab cov ntsiab lus dav dav ntawm nws cov khoom, kev sib txuas, kev siv, thiab kev xav txog kev nyab xeeb.

Cov khoom ntawm Iron Ob Sulfide

Hlau ob sulfide muaj nyob rau hauv ntau cov ntaub ntawv crystalline, feem ntau yog cov mineral pyrrhotite. Cov ntxhia no feem ntau nthuav tawm qhov tsis yog-stoichiometric muaj pes tsawg leeg, txhais tau tias qhov piv ntawm hlau rau sulfur tuaj yeem sib txawv me ntsis. Ntshiab hlau ob sulfide yog ib qho tsaus grey rau dub khoom. Nws yog insoluble nyob rau hauv dej tab sis reacts nrog acids los tsim hydrogen sulfide gas, ib tug heev tshuaj lom thiab flammable. Nws cov ntsiab lus melting yog qhov siab, kwv yees li 1195 ° C (2183 ° F).

Lub cev muaj zog

| Khoom | Nqe ||--------------------------------------------------------------------------------|| Tshuaj formula | FeS || Molar pawg | 87.91 g/mol || Ceev | 4.7–5.0 g/cm3 || Melting Point | 1195 °C (2183 ° F) || Qhov tsos | Tsaus grey rau dub crystalline khoom |

Chemical Properties

Hlau ob sulfide nkag siab cov kua qaub, xws li hydrochloric acid (HCl), los tsim cov roj hydrogen sulfide (H?S): FeS(s) + 2HCl(aq) → FeCl?(aq) + H?S(g) Cov tshuaj tiv thaiv no feem ntau siv hauv chav kuaj kev npaj ntawm hydrogen sulfide. Cov tshuaj tiv thaiv nrog oxygen kuj tuaj yeem tshwm sim, ua rau tsim cov hlau oxides thiab sulfur dioxide.

Synthesis ntawm Iron Ob Sulfide

Hlau ob sulfide tuaj yeem ua ke los ntawm ntau txoj hauv kev. Ib txoj hauv kev muaj feem cuam tshuam ncaj qha rau cov hlau nrog sulfur ntawm qhov kub siab: Fe(s) + S(s) → FeS(s) Cov tshuaj tiv thaiv no yog exothermic heev thiab yuav tsum tau ceev faj tswj kom tsis txhob muaj cua sov. Lwm txoj kev cuam tshuam nrog cov nag lossis daus ntawm cov dej soluble hlau (II) ntsev thiab soluble sulfide ntsev: FeCl?(aq) + Na?S(aq) → FeS(s) + 2NaCl(aq) Txoj kev no yields precipitate ntawm hlau ob sulfide uas tuaj yeem lim thiab qhuav.

Kev siv ntawm Iron Ob Sulfide

Hlau ob sulfide pom cov ntawv thov hauv ntau qhov kev lag luam. Ib qho tseem ceeb daim ntawv thov yog nyob rau hauv zus tau tej cov hydrogen sulfide gas, uas yog siv nyob rau hauv ntau yam kev lag luam txheej txheem thiab raws li ib tug reagent nyob rau hauv tshuaj synthesis. Nws kuj plays lub luag hauj lwm nyob rau hauv metallurgy ntawm hlau thiab hlau, ua raws li ib tug ntawm cov sulfur. Tsis tas li ntawd, nws yog ib feem ntawm qee cov pigments. Txawm li cas los xij, vim muaj cov pa phem ntawm cov pa uas nws yuav tsim, nws siv yuav tsum tau ceev faj txog kev nyab xeeb tseem ceeb.

Kev xav txog kev nyab xeeb

Nws yog ib qho tseem ceeb uas yuav tau ua hlau ob sulfide nrog kev saib xyuas vim nws muaj peev xwm ua rau cov kua qaub los tsim cov pa roj hydrogen sulfide heev. Cov cuab yeej tiv thaiv tus kheej tsim nyog (PPE), xws li hnab looj tes, kev tiv thaiv qhov muag, thiab kev tiv thaiv ua pa, yuav tsum tau siv tas li thaum tuav cov khoom sib xyaw no. Kev ua pa kom txaus yog qhov tseem ceeb los tiv thaiv kev tsim cov pa phem. Nyob rau hauv cov ntaub ntawv ntawm raug, yuav tsum tau nrhiav kev kho mob tam sim ntawd.

Kev tshawb fawb ntxiv

Yog xav paub ntxiv txog cov khoom, synthesis, thiab kev siv ntawm hlau ob sulfide, sab laj cov ntaub ntawv tshawb fawb thiab cov ntaub ntawv xws li cov uas muab los ntawm National Institute of Standards and Technology (NIST) https://www.nist.gov/. Nco ntsoov tias cov txheej txheem tuav kev nyab xeeb yog qhov tseem ceeb thaum ua haujlwm nrog cov tshuaj no.