GB896660A - Improvements in the preparation of phosphates of bivalent metals - Google Patents

Improvements in the preparation of phosphates of bivalent metals

Info

Publication number
GB896660A
GB896660A GB2404459A GB2404459A GB896660A GB 896660 A GB896660 A GB 896660A GB 2404459 A GB2404459 A GB 2404459A GB 2404459 A GB2404459 A GB 2404459A GB 896660 A GB896660 A GB 896660A
Authority
GB
United Kingdom
Prior art keywords
phosphate
ions
solution
urea
heating
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
GB2404459A
Inventor
Peter Whitten Ranby
Henry Leonard Burrus
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.)
Thorn Electrical Industries Ltd
Original Assignee
Thorn Electrical Industries Ltd
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
Application filed by Thorn Electrical Industries Ltd filed Critical Thorn Electrical Industries Ltd
Priority to GB2404459A priority Critical patent/GB896660A/en
Publication of GB896660A publication Critical patent/GB896660A/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
    • C01B25/265—General methods for obtaining 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
    • C01B25/32—Phosphates of magnesium, calcium, strontium, or barium
    • C01B25/325—Preparation by double decomposition

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Luminescent Compositions (AREA)

Abstract

Magnesium, calcium, strontium, barium, cadmium and manganese phosphates and zinc ammonium phosphate are prepared by preparing an aqueous solution containing the metal ions and phosphate ions, sufficient hydrogen ions to prevent the phosphate from precipitating, and also urea or a hydrolyzable urea derivative. The solution is then heated to hydrolyze the urea or hydrolyzable urea derivative, thereby reducing the hydrogen ion concentration, with the result that a homogeneous precipitate of the phosphate is obtained. Impurities may be removed by first heating the solution so that a slight precipitate is obtained, filtering, and then heating the filtrate to effect complete precipitation. A continuous preparation may be effected by passing the solution through a heated vessel or tube. The product may be used in luminescent materials. The phosphate ions may be added in the form of a soluble phosphate, for example ammonium phosphate, and the hydrogen ions may be provided by a mineral acid.
GB2404459A 1959-07-13 1959-07-13 Improvements in the preparation of phosphates of bivalent metals Expired GB896660A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2404459A GB896660A (en) 1959-07-13 1959-07-13 Improvements in the preparation of phosphates of bivalent metals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2404459A GB896660A (en) 1959-07-13 1959-07-13 Improvements in the preparation of phosphates of bivalent metals

Publications (1)

Publication Number Publication Date
GB896660A true GB896660A (en) 1962-05-16

Family

ID=10205487

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2404459A Expired GB896660A (en) 1959-07-13 1959-07-13 Improvements in the preparation of phosphates of bivalent metals

Country Status (1)

Country Link
GB (1) GB896660A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984000885A1 (en) * 1982-09-09 1984-03-15 Organon Teknika Corp Ammonia scavenger
US4460555A (en) * 1983-08-25 1984-07-17 Organon Teknika Corporation Ammonia scavenger
US4650587A (en) * 1982-09-09 1987-03-17 Akzona Incorporated Ammonia scavenger
US4846853A (en) * 1987-03-09 1989-07-11 Mobil Oil Corporation Layered divalent metal hydrogen phosphates
US5252308A (en) * 1991-12-31 1993-10-12 Union Oil Company Of California Transporting urea for quantitative conversion into ammonia
US6761868B2 (en) 2001-05-16 2004-07-13 The Chemithon Corporation Process for quantitatively converting urea to ammonia on demand
US6887449B2 (en) 2002-11-21 2005-05-03 The Chemithon Corporation Method of quantitatively producing ammonia from urea
CN115893352A (en) * 2023-01-09 2023-04-04 北京林立新能源有限公司 Method for preparing manganese phosphate from manganous ions

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984000885A1 (en) * 1982-09-09 1984-03-15 Organon Teknika Corp Ammonia scavenger
US4650587A (en) * 1982-09-09 1987-03-17 Akzona Incorporated Ammonia scavenger
US4460555A (en) * 1983-08-25 1984-07-17 Organon Teknika Corporation Ammonia scavenger
US4846853A (en) * 1987-03-09 1989-07-11 Mobil Oil Corporation Layered divalent metal hydrogen phosphates
US5252308A (en) * 1991-12-31 1993-10-12 Union Oil Company Of California Transporting urea for quantitative conversion into ammonia
US6761868B2 (en) 2001-05-16 2004-07-13 The Chemithon Corporation Process for quantitatively converting urea to ammonia on demand
US7008603B2 (en) 2001-05-16 2006-03-07 The Chemithon Corporation Process and apparatus for quantitatively converting urea to ammonia on demand
US6887449B2 (en) 2002-11-21 2005-05-03 The Chemithon Corporation Method of quantitatively producing ammonia from urea
CN115893352A (en) * 2023-01-09 2023-04-04 北京林立新能源有限公司 Method for preparing manganese phosphate from manganous ions

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