AT91895B - Process for the preparation of alkali borates. - Google Patents
Process for the preparation of alkali borates.Info
- Publication number
- AT91895B AT91895B AT91895DA AT91895B AT 91895 B AT91895 B AT 91895B AT 91895D A AT91895D A AT 91895DA AT 91895 B AT91895 B AT 91895B
- Authority
- AT
- Austria
- Prior art keywords
- alkali
- pentaborate
- preparation
- alkali borates
- boron
- Prior art date
Links
- 239000003513 alkali Substances 0.000 title claims description 13
- 238000000034 method Methods 0.000 title claims description 6
- 150000001642 boronic acid derivatives Chemical class 0.000 title claims description 3
- 238000002360 preparation method Methods 0.000 title description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 5
- 229910052796 boron Inorganic materials 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000007795 chemical reaction product Substances 0.000 claims description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 3
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 3
- 239000004327 boric acid Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- VPOLVWCUBVJURT-UHFFFAOYSA-N pentadecasodium;pentaborate Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[O-]B([O-])[O-].[O-]B([O-])[O-].[O-]B([O-])[O-].[O-]B([O-])[O-].[O-]B([O-])[O-] VPOLVWCUBVJURT-UHFFFAOYSA-N 0.000 description 3
- 229910021538 borax Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000004328 sodium tetraborate Substances 0.000 description 2
- 235000010339 sodium tetraborate Nutrition 0.000 description 2
- 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
- 239000002253 acid Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 150000001639 boron compounds Chemical class 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000825 pharmaceutical preparation Substances 0.000 description 1
- 229940127557 pharmaceutical product Drugs 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Coloring Foods And Improving Nutritive Qualities (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Herstellung von Alkaliboraten.
Die Aufschliessung von Borerzen durch Behandlung mit Kohlensäure zwecks Herstellung von Borverbindungen ist bekannt : wobei man z. B. für die Herstellung von Borax dem verwendeten Borerz die erforderliche Alkalimenge zusetzt.
Es ist nun überraschenderweise gefunden worden, dass man auf ähnliche Art Alkalipentaborat technisch herstellen kann, eine Verbindung, die man bisher nur aus Borsäure und Alkali hergestellt hat. wobei jedoch ein Gemisch von Borsäure, Pentaborat und Borax entsteht. die schwer voneinander zu
EMI1.1
Emaillen, Konservierungsmitteln, Waschmitteln pharmazeutischen Produkten u. dgl.
Diese vielseitige Verwendung der Verbindung ist aber erst bei ihrer rationellen technischen Her- stellung möglich, die gemäss der vorliegenden Erfindung dadurch erreicht wird, dass man den Alkaligehalt des verwendeten Borerzes, bevor es mit Kohlensäure unter Druck behandelt wird, so einstellt. dass als Endprodukt Alkalipentaborat entstellt. Auf diese Weise kann man aus gewissen Borerzen ein
EMI1.2
herstellen oder durch Zusatz von Säure die Borsäure frei machen kann.
Zur Herstellung von Natriumpentaborat oder einem andern Alkalipentaborat wird ein geeignetes Borerz in rohem oder kalziniertem Zustand verwendet, dem man eine genügende Menge des Alkalis zusetzt, um das verlangte Alkalipentaborat zu bilden. dann mischt man die Masse mit Wasser und setzt sie der
EMI1.3
Kochen ausgetrieben und das Natriumpentaborat durch Filtrieren und Kristallisieren aus der Lösung in bekannter Weise gewonnen. Beispielsweise können die folgenden Einzelheiten eines geeigneten Verfahrens angenommen werden :
EMI1.4
Natriumkarbonat zugesetzt, um den natürlichen Sodamangel im Erz zur Bildung von Na. triumpentaborat auszugleichen. Diese Masse wird in einem Autoklaven mehrere Stunden lang erhitzt und dauernd gerührt.
Das Gemisch wird dann bei konstantem Druck von ungefähr 3#5 Atm. mit Kohlendioxyd behandelt. bis die Sättigung eingetreten ist. Der Druck wird abgelassen und die Masse filtriert. Das flüssige Filtrat wird auf ein spezifisches Gewicht von 1#25 eingedampft und das Natriumpentaborat auskristallisiert.
Es ist selbstverständlich, dass eine Analyse des Erzes notwendig ist. um die Menge des zuzusetzenden Natrons zu bestimmen. Wenn das Verfahren in der oben beschriebenen Weise durchgeführt wird. so
EMI1.5
rungen des Verfahrens können vorgenommen werden, je nachdem sie sich notwendig oder wünschenswert zeigen.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process for the preparation of alkali borates.
The digestion of boron ores by treatment with carbonic acid for the production of boron compounds is known. B. for the production of borax adds the required amount of alkali to the boron ore used.
It has now been found, surprisingly, that alkali pentaborate can be produced industrially in a similar manner, a compound which has hitherto only been produced from boric acid and alkali. however, a mixture of boric acid, pentaborate and borax is formed. the difficult to each other
EMI1.1
Enamels, preservatives, detergents, pharmaceutical products, etc. like
This versatile use of the compound is only possible with its efficient industrial production, which is achieved according to the present invention by adjusting the alkali content of the boron ore used before it is treated with carbonic acid under pressure. that as the end product Alkalipentaborat disfigured. In this way you can get one from certain borers
EMI1.2
or can make boric acid free by adding acid.
For the production of sodium pentaborate or another alkali pentaborate, a suitable boron ore in the raw or calcined state is used, to which a sufficient amount of the alkali is added to form the required alkali pentaborate. then you mix the mass with water and place it in the
EMI1.3
Expelled boiling and the sodium pentaborate obtained by filtering and crystallizing from the solution in a known manner. For example, the following details of a suitable procedure can be assumed:
EMI1.4
Sodium carbonate is added to the natural lack of soda in the ore for the formation of Na. to balance trium pentaborate. This mass is heated in an autoclave for several hours and stirred continuously.
The mixture is then at a constant pressure of approximately 3 # 5 atm. treated with carbon dioxide. until saturation has occurred. The pressure is released and the mass is filtered. The liquid filtrate is evaporated to a specific gravity of 1 # 25 and the sodium pentaborate is crystallized out.
It goes without saying that an analysis of the ore is necessary. to determine the amount of sodium to be added. When the procedure is carried out in the manner described above. so
EMI1.5
Changes to the procedure can be made as they prove necessary or desirable.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB91895X | 1919-11-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT91895B true AT91895B (en) | 1923-03-26 |
Family
ID=9867121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT91895D AT91895B (en) | 1919-11-15 | 1920-11-04 | Process for the preparation of alkali borates. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT91895B (en) |
-
1920
- 1920-11-04 AT AT91895D patent/AT91895B/en active
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