GB1044226A - Method for producing alkali metal and/or alkali-earth metal phosphates - Google Patents

Method for producing alkali metal and/or alkali-earth metal phosphates

Info

Publication number
GB1044226A
GB1044226A GB2233364A GB2233364A GB1044226A GB 1044226 A GB1044226 A GB 1044226A GB 2233364 A GB2233364 A GB 2233364A GB 2233364 A GB2233364 A GB 2233364A GB 1044226 A GB1044226 A GB 1044226A
Authority
GB
United Kingdom
Prior art keywords
excess
alkali
ratio
metal
products
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2233364A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Knapsack AG
Original Assignee
Knapsack AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DEK48884A external-priority patent/DE1194383B/en
Priority claimed from DEK50156A external-priority patent/DE1194384B/en
Application filed by Knapsack AG filed Critical Knapsack AG
Publication of GB1044226A publication Critical patent/GB1044226A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C01B25/32—Phosphates of magnesium, calcium, strontium, or barium
    • 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
    • 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
    • C01B25/30—Alkali metal phosphates
    • 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
    • C01B25/38—Condensed phosphates
    • C01B25/385—Condensed phosphates of alkaline-earth metals or magnesium
    • 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
    • C01B25/38—Condensed phosphates
    • C01B25/39—Condensed phosphates of alkali metals
    • C01B25/395—Preparation and dehydrating

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

In the manufacture of alkali metal and/or alkaline earth metal phosphates by introducing an alkali metal and/or alkaline earth metal compound into P2O5-containing gases obtained by burning phosphorus, e.g. as described in Specifications 1,035,971 and 1,035,972, there is employed a 1 to 50 mol per cent excess of P2O5 over that required for a final product having a desired metal oxide to P2O5 molar ratio. The more acid the desired product, i.e. the lower the metal oxide: P2O5 ratio thereof, the greater is the required excess. For products of the same composition, the higher the reaction temperature the greater is the required excess. For example an excess of about 40 mol per cent is required to form products having a metal oxide: P2O5 ratio of 1.0, and about 2% for a ratio of 1.5. Preferred temperature ranges and corresponding required excesses of P2O5 for products having a desired range of compositions are tabulated. Higher temperatures are required the more alkaline the desired product. Other things being equal potassium compounds require higher temperatures than sodium compounds.
GB2233364A 1963-02-07 1964-05-29 Method for producing alkali metal and/or alkali-earth metal phosphates Expired GB1044226A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DEK48884A DE1194383B (en) 1963-02-07 1963-02-07 Process for the production of alkali and / or alkaline earth phosphates
DEK50156A DE1194384B (en) 1963-07-08 1963-07-08 Process for the production of alkali and / or alkaline earth phosphates
DEK0051507 1963-11-30

Publications (1)

Publication Number Publication Date
GB1044226A true GB1044226A (en) 1966-09-28

Family

ID=27211225

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2233364A Expired GB1044226A (en) 1963-02-07 1964-05-29 Method for producing alkali metal and/or alkali-earth metal phosphates

Country Status (4)

Country Link
BE (1) BE648595A (en)
CH (1) CH474452A (en)
GB (1) GB1044226A (en)
SE (1) SE319758B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3389958A (en) * 1964-07-17 1968-06-25 Knapsack Ag Process for the manufacture of alkali metal traimtaphosphates
WO2003055318A1 (en) * 2001-12-22 2003-07-10 Bk Giulini Chemie Gmbh Use of a phosphate mixture for the production of concentrated solutions and brine for the food industry

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2657791B1 (en) * 1990-02-02 1994-04-01 Rhone Poulenc Chimie CHEMICAL COMPOUND CONTAINING ALKALI OR ALKALINE EARTH CATALYST CONTAINING THE SAME AND SOLVOLYSIS METHOD USING THE SAME.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3389958A (en) * 1964-07-17 1968-06-25 Knapsack Ag Process for the manufacture of alkali metal traimtaphosphates
WO2003055318A1 (en) * 2001-12-22 2003-07-10 Bk Giulini Chemie Gmbh Use of a phosphate mixture for the production of concentrated solutions and brine for the food industry
US7641932B2 (en) 2001-12-22 2010-01-05 B.K. Giulini Gmbh Use of a phosphate mixture for the production of concentrated solutions and brine for the food industry
DE10163954C5 (en) * 2001-12-22 2016-12-22 Bk Giulini Gmbh Use of a phosphate mixture for the production of concentrated solutions and brine sheets for the food industry

Also Published As

Publication number Publication date
BE648595A (en) 1964-09-16
SE319758B (en) 1970-01-26
CH474452A (en) 1969-06-30

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