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GB1338919A - Process for the whiteness of cerium oxide - Google Patents

Process for the whiteness of cerium oxide

Info

Publication number
GB1338919A
GB1338919A GB4284171A GB4284171A GB1338919A GB 1338919 A GB1338919 A GB 1338919A GB 4284171 A GB4284171 A GB 4284171A GB 4284171 A GB4284171 A GB 4284171A GB 1338919 A GB1338919 A GB 1338919A
Authority
GB
United Kingdom
Prior art keywords
cerium oxide
whiteness
sept
additive
ceo
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
GB4284171A
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.)
KERMIRA Oy
Original Assignee
KERMIRA Oy
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 KERMIRA Oy filed Critical KERMIRA Oy
Publication of GB1338919A publication Critical patent/GB1338919A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F17/00—Compounds of rare earth metals
    • C01F17/20—Compounds containing only rare earth metals as the metal element
    • C01F17/206—Compounds containing only rare earth metals as the metal element oxide or hydroxide being the only anion
    • C01F17/224—Oxides or hydroxides of lanthanides
    • C01F17/235—Cerium oxides or hydroxides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

1338919 Cerium oxide KEMIRA OY 14 Sept 1971 [15 Sept 1970] 42841/71 Heading C1A Cerium oxide having an improved degree of whiteness is produced by neutralization of a slurry of cerium oxalate to pH 7 and adding sodium silicate, magnesium oxide, aluminium nitrate or mixtures of aluminium nitrate with sodium silicate or sodium borate as an additive or additives to bind impurities in an amount, for each additive, equal to 0À1-0À5% of the CeO 2 , the resulting mixture being calcined at 900‹ C. to produce CeO 2 .
GB4284171A 1970-09-15 1971-09-14 Process for the whiteness of cerium oxide Expired GB1338919A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI702529A FI46249C (en) 1970-09-15 1970-09-15 Process for improving the whiteness of ceria

Publications (1)

Publication Number Publication Date
GB1338919A true GB1338919A (en) 1973-11-28

Family

ID=8507237

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4284171A Expired GB1338919A (en) 1970-09-15 1971-09-14 Process for the whiteness of cerium oxide

Country Status (5)

Country Link
DE (1) DE2145820C3 (en)
FI (1) FI46249C (en)
GB (1) GB1338919A (en)
NL (1) NL7112704A (en)
NO (1) NO129400B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2472601A1 (en) * 1979-12-27 1981-07-03 Rhone Poulenc Ind PROCESS FOR PRODUCING CERIUM POLISHING COMPOSITIONS
FR2545830B1 (en) * 1983-05-13 1986-01-03 Rhone Poulenc Spec Chim NOVEL CERIUM-BASED POLISHING COMPOSITION AND MANUFACTURING METHOD THEREOF
FR2661674B1 (en) * 1990-05-04 1994-04-08 Rhone Poulenc Chimie PROCESS FOR THE MANUFACTURE OF DOUBLE RARE EARTH OXALATES, AND AMMONIUM AND THEIR USES FOR THE MANUFACTURE OF RARE EARTH OXIDES, DOUBLE OXALATES AND OXIDES OBTAINED.

Also Published As

Publication number Publication date
FI46249B (en) 1972-10-31
DE2145820A1 (en) 1972-03-16
NO129400B (en) 1974-04-08
NL7112704A (en) 1972-03-17
FI46249C (en) 1973-02-12
DE2145820C3 (en) 1975-04-17
DE2145820B2 (en) 1974-08-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees