High Purity Selenium Purification Processes

Ukuhlanjululwa kwe-SEPINIIURIIURE ephezulu (≥99.999%) kubandakanya ukudityaniswa kweendlela zomzimba kunye neekhemikhali zokususa izinto ezifana nokungcola ezinjenge. Oku kulandelayo ziinkqubo eziphambili kunye neeparamitha:

I-1. Ukuhlukana kwe-vacuum

Inkqubo yokuhamba:

1. Beka i-crude clelenium (≥99.9%) kwi-quartz enqabileyo ngaphakathi kwendawo yokuphumla ye-valuum.

I-2. Ubushushu ukuya kwi-300-500 ° C phantsi kwe-vacuum (1-100 PA) kwimizuzu engama-60-1800000.

3. I-Selenium Vapor i-Countenses kwi-Confenser yamagumbi amabini (inqanaba elisezantsi nge-PB / I-CU ANGENCY, Inqanaba eliphezulu lokuqokelelwa kweSelenium).

4. Qokelela iSethenium kwi-pickenser ephezulu; 碲 (te) kunye nezinye izinto ezingcolileyo eziphezulu zihlala kwinqanaba eliphantsi.

Iiparamitha:

-Iqondo lokushisa: 300-500 ° C

-Ingcinezelo: 1-100 Pa

-Umxholo opheleleyo: I-quartz okanye intsimbi engenasimo.

2. Ukuhlanjululwa kwemichiza + isithili sokuphumla

Inkqubo yokuhamba:

I-1. Ukudibana kwe-oxidation: hlaziya i-cleyenium (99.9%) nge-O₂ nge-500 ° C ukwenza i-seo₂ kunye ne-teo₂ yegesi.

2. Ukukhutshelwa kweSolvent: Yinyibilikisa i-seo₂ kwisisombululo se-ethanol-amanzi, i-teo₂ ikhuphe i-teoş.

3. Ukuncitshiswa: Sebenzisa i-Hydrazine (n₂h₄) ukunciphisa i-seo₂ ukuya kwi-lementium.

I-4. I-De-De-Te: I-Oxidize Selenium kwakhona kwi-seo₄²⁻, emva koko ikhuphe i-TE isebenzisa ukuthunyelwa kweSolvent.

I-5. Ukupheliswa kokugqibela kwe-vacuum: hlambulula i-Shonium nge-300-500 ° C kunye ne-1-100 P ukuze iphumelele i-6n (99.99%) i-chalty.

Iiparamitha:

-Iqondo lokushisa le-oxidation: 500 ° C

- I-Hydrazine Domsage: Ukugqithisa ukuqinisekisa ukuncitshiswa ngokupheleleyo.

I-3. Ukucocwa kombane

Inkqubo yokuhamba:

1. Sebenzisa i-electrolyte (umzekelo, i-acid ye-acid) ngoxinaniso lwangoku lwe-5-10 A / DM².

I-2. I-Selenium ye-Chemode, ngelixa i-Selenium iQhinga yiNgcebiso kwi-Anode.

Iiparamitha:

-Ixilongo yangoku: 5-10 A / DM²

-I-electrolyte: I-cheid acid okanye isisombululo sekhefu.

I-4. Ukukhupha i-Solvent

Inkqubo yokuhamba:

I-1. Thumela i-Se⁴⁺ kwisisombululo usebenzisa i-tbp (i-tetselwant phosphate) okanye i-toa (i-triogylamine) kwi-Hydrochloric okanye i-Sulfuric Acid imithombo yeendaba.

2. Stringa kunye ne-precipdate tlenium, emva koko iphinde yenze.

Iiparamitha:

-Ukusebenza: i-tbp (i-HCL Medium) okanye i-TOA (H₂SO₄ iphakathi)

-Inani lamanqanaba: 2-3.

I-5. Ukunyibilika komzimba

Inkqubo yokuhamba:

I-1. Ukuphinda-phinda i-wilt-celt inyuselwanisi ukufudusela ukungcola kwe-trace.

2. Ilungele ukufezekisa> Ukucoceka kwe-5 tyhuculo ukusuka kwi-subty sulty eqaqambileyo.

Qaphela: Ifuna izixhobo ezikhethekileyo kwaye amandla-kakhulu.

Ingcebiso

Kwireferensi ebonakalayo, bhekisa la manani alandelayo kuncwadi:

- Ukuseta okungaphezulu kwe-vacuum