GB1230632A - - Google Patents

Info

Publication number
GB1230632A
GB1230632A GB1230632DA GB1230632A GB 1230632 A GB1230632 A GB 1230632A GB 1230632D A GB1230632D A GB 1230632DA GB 1230632 A GB1230632 A GB 1230632A
Authority
GB
United Kingdom
Prior art keywords
phosphate
solution
cenium
crystalline
amorphous
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
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 filed Critical
Publication of GB1230632A publication Critical patent/GB1230632A/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
    • C01B25/37—Phosphates of heavy metals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Cephalosporin Compounds (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Paper (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

1,230,632. Non-amorphous cerium phosphate. COMITATO NAZIONALE PER L'ENERGIA NUCLEARE. 13 May, 1968 [12 May, 1967], No. 22586/68. Heading C1A. Non-amorphous (i.e. Crystalline, Semi-Crystalline or Fibrous) Cenium (IV) Phosphate is produced by reacting a solution of a Ce (IV) salt with phosphoric acid, the molar ratio of PO 4 to Ce in solution being at least 1À5, the precipitation temperature being between 35‹ C. and the boiling temperature of the solution obtained. The precipitated product is preferably left to digest at above 35‹ C. for such a time that crystalline Cenium (IV) phosphate is formed. In an example 0À025 M Ce(SO 4 ) 2 .4H 2 O in sulphuric acid is reacted with 6 M Phosphoric acid (i.e. PO 4 /Ce= 240) in sulphuric acid. The factors involved in obtaining an ordered structure in the precipitated product are (a) Temperature, (b) Digestion Time, (c) PO 4 /Ce ratio in solution, these factors being inter-related. The Cenium (IV) Phosphate of ordered structure obtained in the process shows greater ion-exchange capacity, and less tendency to hydrolyse, than amorphous Ce (IV) phosphate.
GB1230632D 1967-05-12 1968-05-13 Expired GB1230632A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT3670867 1967-05-12

Publications (1)

Publication Number Publication Date
GB1230632A true GB1230632A (en) 1971-05-05

Family

ID=11245802

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1230632D Expired GB1230632A (en) 1967-05-12 1968-05-13

Country Status (3)

Country Link
CH (1) CH523852A (en)
FR (1) FR1564350A (en)
GB (1) GB1230632A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5376304A (en) * 1991-03-28 1994-12-27 Taki Chemical Co., Ltd. Ceric oxide sol

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5376304A (en) * 1991-03-28 1994-12-27 Taki Chemical Co., Ltd. Ceric oxide sol

Also Published As

Publication number Publication date
FR1564350A (en) 1969-04-18
CH523852A (en) 1972-06-15
DE1767462B2 (en) 1977-02-10
DE1767462A1 (en) 1971-09-09

Similar Documents

Publication Publication Date Title
GB1376491A (en) Aluminium phosphate and a producing method therefor
Spirlet et al. Dodecatungstophosphoric acid-21-water by neutron diffraction
Clearfield et al. More on crystalline zirconium phosphates
ES367047A1 (en) Process for the manufacture of condensed aluminum phosphates
US3394987A (en) Reacting calcium carbonated and wet process phosphoric acid
GB1230632A (en)
GB1519291A (en) Water treatment
GB1216065A (en) A method of producing boron trifluoride
GB1397729A (en) Phosphate catalysts used in adiponitrile manufacture
US3403973A (en) Water-soluble polyphosphoric acid and calcium salts derived therefrom
GB1361244A (en) Preparation of fibrous thorium acid phosphate
GB1217571A (en) Method of purifying a solution formed when crude phosphate is disintegrated by phosphoric acid
GB1176806A (en) Process for the Continuous preparation of Phosphoric Acid Esters by Reaction of Phosphorus Oxychloride with Alkylene Oxides
GB1509798A (en) Process for preparing monocalcium phosphate compositions having reduced caking tendencies
GB295848A (en) Improvements in the manufacture of phosphoric acid and phosphates
GB1264275A (en)
GB935509A (en) Method of preparing nucleotides
GB1304781A (en)
Delitsyna et al. Decomposition of Apatite and Neheline in Dilute Nitric Acid Solutions
GB1217442A (en) Process for producing high analysis ammonium polyphosphates
US2017828A (en) Process for producing disodium phosphate
Tsuhako et al. Formation of aluminum phosphates at low temperatures
GB1398844A (en) Manufacture of 1-hydroxyethane 1,1-diphosphonic acid
GB1010256A (en) Process for the production of adenine and 4,5-dicyanoimidazole
SU630242A1 (en) Method of obtaining double superphosphate

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee