PL381B1 - Method for the electrowinning of alkaline perborates. - Google Patents
Method for the electrowinning of alkaline perborates. Download PDFInfo
- Publication number
- PL381B1 PL381B1 PL381A PL38120A PL381B1 PL 381 B1 PL381 B1 PL 381B1 PL 381 A PL381 A PL 381A PL 38120 A PL38120 A PL 38120A PL 381 B1 PL381 B1 PL 381B1
- Authority
- PL
- Poland
- Prior art keywords
- alkaline
- electrowinning
- perborate
- soda
- perborates
- Prior art date
Links
- 238000005363 electrowinning Methods 0.000 title claims 2
- 238000000034 method Methods 0.000 title claims 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 5
- 239000013049 sediment Substances 0.000 claims description 3
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 229920006395 saturated elastomer Polymers 0.000 claims description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical class [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 9
- 238000005868 electrolysis reaction Methods 0.000 description 3
- 229910021538 borax Inorganic materials 0.000 description 2
- 239000004328 sodium tetraborate Substances 0.000 description 2
- 235000010339 sodium tetraborate Nutrition 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 229960001922 sodium perborate Drugs 0.000 description 1
- YKLJGMBLPUQQOI-UHFFFAOYSA-M sodium;oxidooxy(oxo)borane Chemical compound [Na+].[O-]OB=O YKLJGMBLPUQQOI-UHFFFAOYSA-M 0.000 description 1
Description
Przy wytwarzaniu alkalicznego nad¬ boranu przez elektrolize mieszanin roz¬ tworów alkalicznego weglanu i alka¬ licznego boranu znaleziono, ze nad¬ miar alkalicznego weglanu dziala po¬ myslnie na przebieg reakcji. Na tej za¬ sadzie nalezy dbac przy wytwarzaniu np. nadboranu sodowego o to, azeby stale istnial nasycony roztwór sody. Naj¬ lepiej pracuje sie wtedy, gdy soda ist¬ nieje trwale jako cialo osadowe, albo¬ wiem przez to zapewnione zostaje stale zupelne nasycanie roztworu soda. Do osiagniecia zadanego celu uzupelnia sie sode ustawicznie, lub w krótkich odste¬ pach czasu, tak dalece, jak tego wymaga tworzenie sie nadboranu. Mozna takze postepowac tak, ze juz zgóry dodaje sie tyle sody, ile jej potrzeba do przemiany na nadboran.Pod koniec elektrolizy nalezy dbac o to, zeby wcale nie bylo nierozpuszczo- nej sody lub tylko niewiele, a to by nie rozcienczac koncowego produktu.Wplyw, jaki wywiera stezenie sody na sprawnosc elektrolityczna, widoczny jest z ponizszej tabliczki.Gestosc pradu wynosila stale 15 amp. na 50 cm2 powierzchni anody, czas elek¬ trolizy 6 godz. Elektrolit skladal sie z 1000 cm8 roztworu, zawierajacego 50 g dwuweglanu, 110 g boraksu czesciowo rozpuszczonego, czesciowo zas w postaci ciala osadowego i 20 g nadboranu.Przy zawartosci sody 138 g (nasy¬ conej), wzglednie 100 g, wzglednie 69,2 g, wynosila sprawnosc elektrolityczna ko¬ lejno 37%, wzglednie 33,4%, wzgle¬ dnie 29,5 %.Wyniki te nie byly zgóry przewi¬ dziane, poniewaz spodziewano sie, ze zawartosc boraksu w lugu wzrastajaca przy zmniejszaniu sie stezenia sody be¬ dzie oddzialywala dodatnio na wytwa¬ rzanie sie nadboranu. PLIn the preparation of alkaline perborate by electrolysis of mixtures of alkaline carbonate and alkaline borate solutions, it has been found that the excess of alkaline carbonate contributes to the reaction favorably. On this principle, care must be taken in the production of, for example, sodium perborate that a saturated soda solution is always present. The best way to work is when the soda exists permanently as a sediment, or the complete saturation of the soda solution is thereby ensured. To achieve the desired goal, the soda is topped up continuously or in short intervals, as far as the perborate formation requires. You can also do this by adding as much soda in the top as is needed to convert to perborate. At the end of the electrolysis, make sure that there is no undissolved soda at all or only a little, so as not to dilute the final product. The soda concentration exerts on the electrolytic efficiency is shown in the table below. The current density was constantly 15 amps. for 50 cm 2 of the anode surface, electrolysis time 6 hours. The electrolyte consisted of 1000 cc of a solution containing 50 g of bicarbonate, 110 g of borax partially dissolved, partially in the form of a sediment and 20 g of perborate. With a sodium content of 138 g (saturated) or 100 g or 69.2 g respectively. , was an electrolytic efficiency of 37% or 33.4% or 29.5%, respectively. These results were not anticipated in advance, as it was expected that the borax content in the slurry would increase with the decrease in the concentration of soda ash. the day had a positive effect on the production of perborate. PL
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL381B1 true PL381B1 (en) | 1924-07-30 |
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