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izinqubo zokukhiqiza zensimbi oxide ophuzi

I-iron oxide yellow ingumbala ophuzi we-powder ophuzi. Ubuningi obuhlobene kwakungu-3.5. Izici zamakhemikhali zizinzile. Usayizi wezinhlayiyana ngu-0.01-0.02 μ M. Inendawo enkulu ethile (cishe izikhathi eziyi-10 ze-iron oxide ejwayelekile), ukumuncwa okunamandla kwe-ultraviolet, ukumelana nokukhanya, ukumelana nomoya nezinye izinto ezinhle. Le filimu isobala futhi inezinto ezinhle. Ungayenza kanjani i-iron oxide yellow?

 

Indlela: i-ferrous sulfate oxidation indlela: i-sulfuric acid iphendula ngokufakwa kwensimbi ukwakha i-ferrous sulfate. I-sodium hydroxide iyanezelwa futhi umoya usetshenziselwa uketshezi ukulungiselela i-crystal nucleus. Ama-ferrous sulphate nensimbi yensimbi ayengezwa ekumisweni kwe-crystal nucleus, evuthayo futhi yashaywa emoyeni nge-oxidation. I-Ferric oxide yellow ilungiswa ngokucwenga kwengcindezi, ukuhlanza, ukumisa nokugaya.

 

I-Fe + H2SO4 → FeSO4 + H2 ↑

I-Fe + H2SO4 → FeSO4 + H2 ↑

I-FeSO4 + 2NaOH → Fe (OH) 2 + Na2SO4

I-FeSO4 + 2NaOH → Fe (OH) 2 + Na2SO4

I-4Fe (OH) 2 + O2 → 4FeOOH + 2H2O

I-4Fe (OH) 2 + O2 → 4FeOOH + 2H2O

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

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

 

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

I-FeSO4 · 7H2O + O2 → 2fe2o3 · H2O ↓ + 4h2so4 + 2H2O izimo zokuphendula: engeza ama-chip angama-74g ku-1000ml 15% sulfuric acid kuze kunyamalale izinsimbi, bese wenza i-sulfate eyindilinga ene-200g / L. ingezwe kwisisombululo se-sulfate, futhi u-40% wensimbi isiyonke uguqulwa ube yi-ayidroksayidi yensimbi [Fe (OH) 2] ngokugovuza okuqhubekayo, futhi insimbi ixhunywe ku-Fe ukwakha i-crystal nucleus ku-30 ​​~ 35 ℃. Kwabe sekufakwa imvuthuluka yensimbi engu-90 g / L kuleyo ngxube yakha i-7 g / L crystal nucleus ne-40 g / L sulfate ferrous, yabe isishiswa yaba ngu-85 ℃ nge-oxidation yomoya ngejubane lama-600 L / h ngama-64 h, futhi bese kuhlungwa, kwagezwa, komiswa futhi kwachotshozwa ukuthola i-hydrous ferric oxide yellow.


Isikhathi Iposi: Jul-29-2020