DE445151C - Process for the separation of the two complex phosphotungstamolybdaic acids 3HOíñPOíñ24 (WO + MoO) and 3HOíñPOíñ18 (WO + MoO) - Google Patents

Process for the separation of the two complex phosphotungstamolybdaic acids 3HOíñPOíñ24 (WO + MoO) and 3HOíñPOíñ18 (WO + MoO)

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Publication number
DE445151C
DE445151C DEF57656D DEF0057656D DE445151C DE 445151 C DE445151 C DE 445151C DE F57656 D DEF57656 D DE F57656D DE F0057656 D DEF0057656 D DE F0057656D DE 445151 C DE445151 C DE 445151C
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Germany
Prior art keywords
moo
acid
acids
complex
separation
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Expired
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DEF57656D
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German (de)
Inventor
Dr Erich Hartmann
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IG Farbenindustrie AG
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IG Farbenindustrie AG
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Publication date
Application filed by IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to DEF57656D priority Critical patent/DE445151C/en
Application granted granted Critical
Publication of DE445151C publication Critical patent/DE445151C/en
Expired legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/26—Phosphates
    • C01B25/45—Phosphates containing plural metal, or metal and ammonium
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Description

Verfahren zur Trennung der beiden komplexen Phosphorwolframmolybdänsäuren 3 H20 ' P205 - 24 (WO3 +No03) und 3 H20 ' P2 O5 ' 18 (W03 +1VIo03). Es ist bekannt, daß sich bei der Reaktion zwischen Wolframaten, Molybdaten und Phosphaten je nach den Arbeitsbedingungen zwei verschiedene Komplexsäulen bilden, denen folgende Formeln zukommen: 3 H20 # P205 # 24 (W03 -f- MOO3) und 3 H20 . P205. 18 (W03 -f- Moe3), wobei das Verhältnis zwischen W03 und Moe3 ein schwankendes sein kann (Journ. Biol. Chemistry 1920, Band 43, H. Wu.).Process for the separation of the two complex phosphotungstic molybdic acids 3 H20 'P205 - 24 (WO3 + No03) and 3 H20 ' P2 O5 '18 (W03 + 1VIo03). It is known that the reaction between tungstates, molybdates and phosphates forms two different complex columns, depending on the working conditions, which have the following formulas: 3 H20 # P205 # 24 (W03 -f- MOO3) and 3 H20. P205. 18 (W03 -f- Moe3), whereby the ratio between W03 and Moe3 can be fluctuating (Journ. Biol. Chemistry 1920, Volume 43, H. Wu.).

Die beiden Komplexsäuren unterscheiden sich in ihrem chemischen Verhalten dadurch voneinander, daß die Säure 3 H20 # P205 # 24 (W03 -f- MO03) ein unlösliches Ammonsalz gibt, während das Ammonsalz der Säure 3 H20 - P205 - 18 (W03 -f- M003) leicht löslich ist. Dieses verschiedene Verhalten der Säuren wurde in der obenge; nannten Arbeit dazu benutzt, um die Säuren zu trennen.The two complex acids differ from one another in their chemical behavior in that the acid 3 H20 # P205 # 24 (W03 -f- MO03) gives an insoluble ammonium salt, while the ammonium salt of the acid 3 H20 - P205 - 1 8 (W03 -f- M003) is easily soluble. This different behavior of the acids has been demonstrated in the above; called work is used to separate the acids.

Dabei geht natürlich die durch Ammoniumsalze fällbare Säure in ein unlösliches Ammonsalz über und ist dadurch für die meisten Verwendungsarten unbrauchbar geworden.The acid, which can be precipitated by ammonium salts, is of course included insoluble ammonium salt and is therefore unusable for most types of use become.

Es wurde nun die bemerkenswerte Beobachtung gemacht, daß man die Reaktionen zur Bildung der Komplexsäuren bei solchen Konzentrationen vornehmen kann, daß sich das leicht wasserlösliche Natriumsalz der Säure 3 H20 # P205 # 24 (W03 -'- MO03) in gut ausgebildeten Kristallen quantitativ abscheidet, während die Säure 3 H20 # P205. 18 (W03 + Moe3) in Lösung bleibt und aus dem Filtrat ausgesalzen werden kann, z. B. durch Chlorammonium.The remarkable observation has now been made that the reactions for the formation of the complex acids can be carried out at such concentrations that the readily water-soluble sodium salt of the acid 3 H20 # P205 # 24 (W03 -'- MO03) separates out quantitatively in well-formed crystals, while the acid 3 H20 # P205. 18 (W03 + Moe3) remains in solution and can be salted out of the filtrate, e.g. B. by chlorammonium.

Beispiel. i oo Gewichtsteile Natriumwolframat und 25 Gewichtsteile Natriummolybdat werden in 225 Gewichtsteile Wasser gelöst, dazu fügt man 85 Gewichtsteile 85prozentige Posphorsäure, 115 Gewichtsteile Salzsäure i9° B6 und 2 Gewichtsteile Salpetersäure. Man kocht etwa 8 Stunden und läßt langsam abkühlen. Die Säure 3 H20 # P205 # 24 (W03 --f-- MO03) scheidet sich als Natronsalz in großen Kristallen ab. Die Mutterlauge gibt mit Ammonsalzen keine Trübung mehr, ein Zeichen, daß die Säure quantitativ abgeschieden ist. Aus dem Filtrat kann man die Säure 3 H20 # P205 # 18 _(W03 -f- Moe3) durch Zugabe von etwa 5o Gewichtsteilen Chlorammonium aussahen.Example. 100 parts by weight of sodium tungstate and 25 parts by weight Sodium molybdate is dissolved in 225 parts by weight of water, to which 85 parts by weight are added 85 percent phosphoric acid, 115 parts by weight hydrochloric acid 19 ° B6 and 2 parts by weight Nitric acid. It is boiled for about 8 hours and allowed to cool slowly. The acid 3 H20 # P205 # 24 (W03 --f-- MO03) separates out as a sodium salt in large crystals. With ammonium salts, the mother liquor no longer gives any turbidity, a sign that the acid is deposited quantitatively. The acid 3 H20 # P205 # can be extracted from the filtrate 18 _ (W03 -f- Moe3) looked like by adding about 50 parts by weight of chlorammonium.

Claims (1)

PATENTANSPIZUCII: Verfahren zur Trennung der beiden kom- plexen Phosphorwolframmolybdänsäuren 3 H2Ö #P205 # 24' (W03 -'-- M003) und 3 H20 # P205 # 18 (W03 -(- Mo03), dadurch gekennzeichnet, daß man zuerst die Säure 3 H20 . P205 . 24 (W0.+ M003)
in Form ihres Natronsalzes aus dem etwa 12 bis 18 Prozent W03 + Mo03 enthalten- den Reaktionsgemisch auskristallisieren läßt und dann die in der Lösung verblei- bende Säure ... . 3 ilzO-.'-P295 ' I$. @WQ.s+ Mo03) -in der hierfür üblichen Weise aussaht.
PATENT APPLICATION: Procedure for separating the two com- plexen phosphotungstic molybdic acids 3 H2Ö # P205 # 24 '(W03 -'-- M003) and 3 H20 # P205 # 18 (W03 - (- Mo03), characterized in that one first the acid 3 H20. P205. 24 (W0. + M003)
in the form of their sodium salt from the approx 12 to 18 percent W03 + Mo03 included- crystallize the reaction mixture leaves and then the remaining in the solution tending acid ... 3 ilzO- . '- P295' I $. @WQ. s + Mo03) -looks in the usual way for this.
DEF57656D 1924-12-24 1924-12-24 Process for the separation of the two complex phosphotungstamolybdaic acids 3HOíñPOíñ24 (WO + MoO) and 3HOíñPOíñ18 (WO + MoO) Expired DE445151C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF57656D DE445151C (en) 1924-12-24 1924-12-24 Process for the separation of the two complex phosphotungstamolybdaic acids 3HOíñPOíñ24 (WO + MoO) and 3HOíñPOíñ18 (WO + MoO)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF57656D DE445151C (en) 1924-12-24 1924-12-24 Process for the separation of the two complex phosphotungstamolybdaic acids 3HOíñPOíñ24 (WO + MoO) and 3HOíñPOíñ18 (WO + MoO)

Publications (1)

Publication Number Publication Date
DE445151C true DE445151C (en) 1927-06-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
DEF57656D Expired DE445151C (en) 1924-12-24 1924-12-24 Process for the separation of the two complex phosphotungstamolybdaic acids 3HOíñPOíñ24 (WO + MoO) and 3HOíñPOíñ18 (WO + MoO)

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DE (1) DE445151C (en)

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