GB641663A - Luminescent material and method of preparing the same - Google Patents

Luminescent material and method of preparing the same

Info

Publication number
GB641663A
GB641663A GB22085/47A GB2208547A GB641663A GB 641663 A GB641663 A GB 641663A GB 22085/47 A GB22085/47 A GB 22085/47A GB 2208547 A GB2208547 A GB 2208547A GB 641663 A GB641663 A GB 641663A
Authority
GB
United Kingdom
Prior art keywords
ammonium
purified
solution
sulphide
phosphate
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
GB22085/47A
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.)
GTE Sylvania Inc
Original Assignee
Sylvania Electric Products Inc
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 Sylvania Electric Products Inc filed Critical Sylvania Electric Products Inc
Publication of GB641663A publication Critical patent/GB641663A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7715—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing cerium
    • C09K11/7723—Phosphates
    • C09K11/7724—Phosphates with alkaline earth metals

Abstract

In the preparation of a calcium phosphate phosphor, [Group XL (a)], a solution of cerous nitrate is purified in weak hydrochloric acid with hydrogen sulphide, a large excess of ammonium hydroxide added (plus tartaric acid to keep the cerium in solution), and the solution treated with ammonium sulphide. Purified cerium phosphate is then precipitated by adding dibasic ammonium phosphate (previously purified with ammonium sulphide). The solutions are reacted hot (70-90 DEG C.).
GB22085/47A 1943-04-08 1948-01-14 Luminescent material and method of preparing the same Expired GB641663A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US641663XA 1943-04-08 1943-04-08

Publications (1)

Publication Number Publication Date
GB641663A true GB641663A (en) 1950-08-16

Family

ID=22054007

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22085/47A Expired GB641663A (en) 1943-04-08 1948-01-14 Luminescent material and method of preparing the same

Country Status (1)

Country Link
GB (1) GB641663A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2167739A (en) * 1984-11-30 1986-06-04 Atomic Energy Authority Uk Preparation of dispersible cerium compounds
EP1726688A1 (en) * 2005-05-23 2006-11-29 Shin-Etsu Chemical Co., Ltd. Cerium ion-containing solution and corrosion inhibitor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2167739A (en) * 1984-11-30 1986-06-04 Atomic Energy Authority Uk Preparation of dispersible cerium compounds
EP1726688A1 (en) * 2005-05-23 2006-11-29 Shin-Etsu Chemical Co., Ltd. Cerium ion-containing solution and corrosion inhibitor

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