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GB266800A - Improved process of separating a mixture of hafnium and zirconium - Google Patents

Improved process of separating a mixture of hafnium and zirconium

Info

Publication number
GB266800A
GB266800A GB3010625A GB3010625A GB266800A GB 266800 A GB266800 A GB 266800A GB 3010625 A GB3010625 A GB 3010625A GB 3010625 A GB3010625 A GB 3010625A GB 266800 A GB266800 A GB 266800A
Authority
GB
United Kingdom
Prior art keywords
zirconium
hafnium
compounds
phosphates
acid
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
GB3010625A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Priority to GB3010625A priority Critical patent/GB266800A/en
Publication of GB266800A publication Critical patent/GB266800A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G27/00Compounds of hafnium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Removal Of Specific Substances (AREA)
  • Treatment Of Water By Ion Exchange (AREA)

Abstract

266,800. Tennant, W. J., (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). Nov. 28, 1925. Hafnium and zirconium phosphates, chlorides, and oxides.-The separation of hafnium and zirconium is effected by fractionally decomposing the complex compounds produced by dissolving the phosphates in a medium containing hydrofluoric acid or a bifluoride, whereby a precipitate of the phosphates is produced in which the proportion of hafnium relatively to zirconium is greater than in the original material. The decomposition is effected by compounds which withdraw fluorine from the complex compounds, suitable substances being concentrated sulphuric acid, boric acid, boron compounds such as borax, boron chloride and boron tri-ethyl ester, zirconium, aluminium and tin salts, compounds of molybdenum, tungsten, chromium, niobium, vanadium, tantalum and beryllium, and the sol of silicic acid. Examples describe the use of ammonium molybdate and of zirconium chloride. In the latter case the zorconium chloride is produced from a portion of the original solution by adding sodium hydroxide to precipitate the oxide. and dissolving this in hydrochloric acid. Specification 226,180 is referred to.
GB3010625A 1925-11-28 1925-11-28 Improved process of separating a mixture of hafnium and zirconium Expired GB266800A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3010625A GB266800A (en) 1925-11-28 1925-11-28 Improved process of separating a mixture of hafnium and zirconium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3010625A GB266800A (en) 1925-11-28 1925-11-28 Improved process of separating a mixture of hafnium and zirconium

Publications (1)

Publication Number Publication Date
GB266800A true GB266800A (en) 1927-02-28

Family

ID=10302363

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3010625A Expired GB266800A (en) 1925-11-28 1925-11-28 Improved process of separating a mixture of hafnium and zirconium

Country Status (1)

Country Link
GB (1) GB266800A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2816814A (en) * 1953-08-20 1957-12-17 William K Plucknett Separation of zirconium and hafnium halides
CN119931077A (en) * 2025-01-23 2025-05-06 山东金鸾科技开发有限公司 A preparation method and application of a supramolecular network of zirconium and hafnium complexes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2816814A (en) * 1953-08-20 1957-12-17 William K Plucknett Separation of zirconium and hafnium halides
CN119931077A (en) * 2025-01-23 2025-05-06 山东金鸾科技开发有限公司 A preparation method and application of a supramolecular network of zirconium and hafnium complexes

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