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iinkqubo zemveliso yentsimbi oxide tyheli

I-Iron oxide etyheli yimpuphu ebonakalayo ye-pigment yellow. Ukuxinana kwesihlobo yayiyi-3.5. Iimpawu zeekhemikhali zizinzile. Ubungakanani beengqimba ngu-0.01-0.02 μ M. Inendawo enkulu ethile (malunga namaxesha ali-10 e-oxide yesiqhelo yentsimbi), ukufunxwa okuqinileyo kwe-ultraviolet, ukumelana nokukhanya, ukumelana nomoya kunye nezinye iipropathi ezilungileyo. Ifilimu iyabonakala kwaye ineempawu ezintle. Uyenza njani i-iron oxide yellow?

 

Indlela: i-ferrous sulfate oxidation indlela: i-acid ye-sulfuric iphendula nge-iron filings ukwenza i-ferrous sulfate. Isodium hayidroksayidi yongezwa kwaye umoya usetyenziselwa ukwenza ioksijini ukulungiselela ikristal nucleus. I-Ferrous sulfate kunye ne-chips zentsimbi ziyongezwa ekumisweni kwekristal nucleus, ifudunyezwe kwaye ivuthelwe emoyeni kwi-oxidation. I-Ferric oxide etyheli ilungiswe ngoxinzelelo, ukucoca, ukomisa kunye nokugaya.

 

Fe + H2SO4 → FeSO4 + H2 ↑

Fe + H2SO4 → FeSO4 + H2 ↑

I-FeSO4 + 2NaOH → Fe (OH) 2 + Na2SO4

I-FeSO4 + 2NaOH → Fe (OH) 2 + Na2SO4

4Fe (OH) 2 + O2 → 4FeOOH + 2H2O

4Fe (OH) 2 + O2 → 4FeOOH + 2H2O

H2SO4 + Fe + 7H2O → FeSO4 · 7H2O + H2 ↑

H2SO4 + Fe + 7H2O → FeSO4 · 7H2O + H2 ↑

 

I-FeSO4 · 7H2O + O2 → 2Fe2O3 · H2O ↓ + 4H2SO4 + 2H2O

I-FeSO4 · 7H2O + O2 → 2fe2o3 · H2O ↓ + 4h2so4 + 2H2O iimeko zokuphendula yongezwa kwisisombululo sesalferi, kunye ne-40% yentsimbi iyonke iguqulwa yenziwa yi-ayidroksayidi yentsimbi [Fe (OH) 2] ngokuqhubeka okunyusayo, kwaye isinyithi sidibene ne-Fe ukwenza ikristal nucleus kwi-30 ~ 35 ℃. Emva koko i-90 g / L yentsimbi yokufakelwa yongezwa kumxube ukwenza i-7 g / L yekristale yenyani kunye ne-40 g / L ye-ferrous sulfate, emva koko yatshiswa kwi-85 ℃ ye-oxidation yomoya ngesantya se-600 L / h nge-64 h, kunye emva koko yahluzwa, yahlanjwa, yomiswa kwaye ityunyuziwe ukuze ifumane umbane otyheli.


Ixesha Post: Jul-29-2020