ZA918372B - Process for the manufacture of ammonium rare-earth double oxalates and their uses for the manufacture of rare-earth oxides,and rare-earth oxides obtained - Google Patents

Process for the manufacture of ammonium rare-earth double oxalates and their uses for the manufacture of rare-earth oxides,and rare-earth oxides obtained

Info

Publication number
ZA918372B
ZA918372B ZA918372A ZA918372A ZA918372B ZA 918372 B ZA918372 B ZA 918372B ZA 918372 A ZA918372 A ZA 918372A ZA 918372 A ZA918372 A ZA 918372A ZA 918372 B ZA918372 B ZA 918372B
Authority
ZA
South Africa
Prior art keywords
rare
manufacture
earth
earth oxides
ammonium
Prior art date
Application number
ZA918372A
Other languages
English (en)
Inventor
Clair David
David Clair
Original Assignee
Rhone Poulenc Chimie
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 Rhone Poulenc Chimie filed Critical Rhone Poulenc Chimie
Publication of ZA918372B publication Critical patent/ZA918372B/xx

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
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/41—Preparation of salts of carboxylic acids
    • C07C51/412—Preparation of salts of carboxylic acids by conversion of the acids, their salts, esters or anhydrides with the same carboxylic acid part
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00—Ammonia; Compounds thereof
    • C01C1/28—Methods of preparing ammonium salts in general
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/41—Preparation of salts of carboxylic acids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Inorganic Chemistry (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Television Signal Processing For Recording (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Peptides Or Proteins (AREA)
  • Medicines Containing Plant Substances (AREA)
ZA918372A 1990-11-13 1991-10-21 Process for the manufacture of ammonium rare-earth double oxalates and their uses for the manufacture of rare-earth oxides,and rare-earth oxides obtained ZA918372B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9014030A FR2669027B1 (fr) 1990-11-13 1990-11-13 Procede de fabrication d'oxalates doubles de terres rares et d'ammonium et leurs utilisations pour la fabrication d'oxydes de terres rares et oxydes de terres rares obtenus.

Publications (1)

Publication Number Publication Date
ZA918372B true ZA918372B (en) 1992-09-30

Family

ID=9402097

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA918372A ZA918372B (en) 1990-11-13 1991-10-21 Process for the manufacture of ammonium rare-earth double oxalates and their uses for the manufacture of rare-earth oxides,and rare-earth oxides obtained

Country Status (16)

Country Link
US (1) US5665323A (no)
EP (1) EP0486350B1 (no)
JP (1) JPH0714814B2 (no)
KR (1) KR950004771B1 (no)
CN (2) CN1040745C (no)
AT (1) ATE164373T1 (no)
BR (1) BR9104904A (no)
CA (1) CA2055282C (no)
DE (1) DE69129143T2 (no)
FI (1) FI915338A (no)
FR (1) FR2669027B1 (no)
IE (1) IE913934A1 (no)
NO (1) NO914399L (no)
SG (1) SG50363A1 (no)
TW (1) TW219922B (no)
ZA (1) ZA918372B (no)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04238813A (ja) * 1990-12-28 1992-08-26 Shin Etsu Chem Co Ltd 希土類元素蓚酸アンモニウム複塩の製造方法および希土類元素酸化物の製造方法
AUPM402094A0 (en) * 1994-02-18 1994-03-17 University Of Sydney, The Chemical compounds
US20050019241A1 (en) * 2003-07-23 2005-01-27 Lyons Robert Joseph Preparation of rare earth ceramic garnet
CN1318304C (zh) * 2003-12-15 2007-05-30 内蒙古科技大学 制备大颗粒氧化铈的方法
CN102304628A (zh) * 2011-07-29 2012-01-04 江西理工大学 一种利用液膜从磷矿中提取稀土的方法
CN104691127A (zh) * 2015-02-10 2015-06-10 首都师范大学 一种实现商品终身防伪的方法
CN108408757B (zh) * 2018-03-15 2020-06-23 益阳鸿源稀土有限责任公司 一种高纯超细氧化钪粉末的制备方法
CN108752190A (zh) * 2018-06-27 2018-11-06 湖南稀土金属材料研究院 稀土铵双草酸盐的制备方法及稀土氧化物的制备方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3562175A (en) * 1968-09-11 1971-02-09 Gen Electric Gadolinium oxide particle growth in lithium oxide flux
US3635658A (en) * 1969-04-02 1972-01-18 Sylvania Electric Prod Rare earth oxide process
JPS5395911A (en) * 1977-02-01 1978-08-22 Mitsubishi Chem Ind Ltd Preparation of fine rare earth oxalate powder
JPS6059222B2 (ja) * 1977-02-08 1985-12-24 三菱化学株式会社 希土「しゅう」酸塩微粉体の製造法
NO140925C (no) * 1978-04-14 1979-12-12 Sjeldne Jordarter Forskning Fremgangsmaate til fremstilling av yttriumoksyd med saerlig store partikler
JPS5528905A (en) * 1978-08-18 1980-02-29 Mitsubishi Chem Ind Ltd Preparation of fine powder of ammonium yttrium oxalate
JPS61532A (ja) * 1984-06-13 1986-01-06 Nippon Pureeteingu Kk サマリウムの回収方法
JPS6183143A (ja) * 1984-09-28 1986-04-26 Denki Kagaku Kogyo Kk 溶液の調整法
JPH0627004B2 (ja) * 1987-05-26 1994-04-13 三菱マテリアル株式会社 １２面体の結晶形を有する酸化スカンジウムの製造方法
DK168701B1 (da) * 1988-06-09 1994-05-24 Topsoe Haldor As Fremgangsmåde til ved fremstilling af svovlsyre at udkondensere svovlsyredampe

Also Published As

Publication number Publication date
BR9104904A (pt) 1992-06-23
ATE164373T1 (de) 1998-04-15
JPH05262518A (ja) 1993-10-12
CA2055282A1 (fr) 1992-05-14
KR950004771B1 (ko) 1995-05-10
CN1096420C (zh) 2002-12-18
DE69129143T2 (de) 1998-10-15
KR920009702A (ko) 1992-06-25
FI915338A (fi) 1992-05-14
DE69129143D1 (de) 1998-04-30
IE913934A1 (en) 1992-05-20
TW219922B (no) 1994-02-01
EP0486350B1 (fr) 1998-03-25
CN1147501A (zh) 1997-04-16
EP0486350A1 (fr) 1992-05-20
FR2669027B1 (fr) 1992-12-31
US5665323A (en) 1997-09-09
JPH0714814B2 (ja) 1995-02-22
FR2669027A1 (fr) 1992-05-15
NO914399L (no) 1992-05-14
CA2055282C (fr) 2000-01-11
NO914399D0 (no) 1991-11-11
CN1040745C (zh) 1998-11-18
FI915338A0 (fi) 1991-11-12
CN1061403A (zh) 1992-05-27
SG50363A1 (en) 1998-07-20

Similar Documents

Publication Publication Date Title
TW221984B (no)
AU2579088A (en) Catalyst for the selective reduction of nitrogen oxides with amnonia
GR3003865T3 (no)
ZA918372B (en) Process for the manufacture of ammonium rare-earth double oxalates and their uses for the manufacture of rare-earth oxides,and rare-earth oxides obtained
GB1317064A (en) Method of preparing a catalyst of vanadium-titanium oxides for vapour t-phase oxidation and oxidizing ammonolysis of aromatic and heterocyclic compounds
FI943701A (fi) Koboltti-kobolttioksidijauhe, menetelmä sen valmistamiseksi ja sen käyttö
EP0502612A3 (en) High-purity iron oxide, and method for production thereof
ZA912261B (en) Process for the production of rare earth ammonium double oxalates and their uses for the production of rare earth oxides,double oxalates and oxides obtained
GB2151233B (en) 2,5-diketo-d-gluconic acid reductase
WO1990008731A3 (en) Preparation of a uniform mixed metal oxide
JPS5376183A (en) Production of pigment-attached fluorescent substance
DE3176299D1 (en) Colloidal solutions, processes for producing the same and uses thereof
EP0396988A3 (de) Aluminiumoxidpulver mit verbesserten Verarbeitungseigenschaften und Verfahren zu ihrer Herstellung
JPS51148692A (en) Method for treating the active carbon without reducing the nitrogen di oxide
CA2008413A1 (en) Ammonia oxidation
GR65340B (en) Method for the industrial production of oxides metalls,especially oxide of magnesium and disposition for the application thereof
JPS5232465A (en) Reciprocating mechaism
ZA931296B (en) Process for the manufacture of aldehydes.
JPS5347314A (en) New production of aluminum
JPS51116467A (en) Semi-wet type electric dust collector
JPS535121A (en) Preparation of cis-1.2-epoxypropylphosphonic acids
JPS51148486A (en) Rotary sample-base
LT2121B (lt) Dujinio islydzio lempu droselio arba transformatoriaus, naudojamo kaip iejimo droselis, u-formos serdies ploksteliu ir tarp jos strypu istatomu t-formos atvirkstinio sujungimo ploksteliu gamybos budas
JPS5225378A (en) Traverser