GB488008A - A process for the production of cerium compounds - Google Patents

A process for the production of cerium compounds

Info

Publication number
GB488008A
GB488008A GB3429837A GB3429837A GB488008A GB 488008 A GB488008 A GB 488008A GB 3429837 A GB3429837 A GB 3429837A GB 3429837 A GB3429837 A GB 3429837A GB 488008 A GB488008 A GB 488008A
Authority
GB
United Kingdom
Prior art keywords
sulphate
hydroxides
basic
alkali
cerite
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
GB3429837A
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.)
Evonik Degussa GmbH
Original Assignee
Evonik Degussa GmbH
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
Priority to DE488008X priority Critical
Application filed by Evonik Degussa GmbH filed Critical Evonik Degussa GmbH
Publication of GB488008A publication Critical patent/GB488008A/en
Application status is Expired legal-status Critical

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01FCOMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F17/00Compounds of the rare earth metals, i.e. scandium, yttrium, lanthanum, or the group of the lanthanides
    • C01F17/0081Sulfates

Abstract

Basic cerium sulphate, suitable for use as a white opacifier for enamels, is obtained by diluting with water a sulphate solution containing tetravalent cerium and other cerite earths which is as free as possible from fixed alkalies. Small quantities of ammonia may, however, be added during the precipitation of the basic sulphate, which may be washed with dilute acid to remove traces of didymium compounds. A mixture of cerite hydroxides obtained from a mineral such as monazite sand may serve as initial material, in which case either the hydroxides or the sulphate solution may be treated with oxidizing agents such as hydrogen peroxide, oxygen, or chlorine to convert their cerium content to the tetravalent form; or the sulphate solution may be subjected to anodic oxidation. Precipitation of cerite hydroxides for use in the process may be effected by adding the mixed salts in a solid or dissolved state to the alkali solution, whereby the precipitated hydroxides may be readily washed free from alkali. The basic sulphate may be calcined at 800-1100 DEG C. to yield the oxide, and the usefulness of both sulphate and oxide as an opacifier may be improved by adding small amounts of a basic alkali or alkaline-earth compound, alumina, silica, or an alkali silicate.
GB3429837A 1936-12-10 1937-12-10 A process for the production of cerium compounds Expired GB488008A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE488008X 1936-12-10

Publications (1)

Publication Number Publication Date
GB488008A true GB488008A (en) 1938-06-29

Family

ID=6543726

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3429837A Expired GB488008A (en) 1936-12-10 1937-12-10 A process for the production of cerium compounds

Country Status (1)

Country Link
GB (1) GB488008A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3112990A (en) * 1957-09-02 1963-12-03 Krumholz Pawel Process for separating cerium from trivalent rare earths
FR2559755A1 (en) * 1984-02-20 1985-08-23 Rhone Poulenc Spec Chim Ceric oxide with new morphological characteristics and method of obtaining the same
GB2167739A (en) * 1984-11-30 1986-06-04 Atomic Energy Authority Uk Preparation of dispersible cerium compounds
US5017352A (en) * 1984-02-20 1991-05-21 Rhone-Pulenc Specialites Chimique Novel cerium oxide particulates

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3112990A (en) * 1957-09-02 1963-12-03 Krumholz Pawel Process for separating cerium from trivalent rare earths
FR2559755A1 (en) * 1984-02-20 1985-08-23 Rhone Poulenc Spec Chim Ceric oxide with new morphological characteristics and method of obtaining the same
EP0153228A1 (en) * 1984-02-20 1985-08-28 Rhone-Poulenc Chimie Cerium dioxide with morphological characteristics, and process for its preparation
AU571929B2 (en) * 1984-02-20 1988-04-28 Rhone-Poulenc Specialites Chimiques Ceric oxide and a process for its production
US5017352A (en) * 1984-02-20 1991-05-21 Rhone-Pulenc Specialites Chimique Novel cerium oxide particulates
US5080877A (en) * 1984-02-20 1992-01-14 Rhone-Poulenc Specialties Chimiques Novel cerium oxide particulates
GB2167739A (en) * 1984-11-30 1986-06-04 Atomic Energy Authority Uk Preparation of dispersible cerium compounds
EP0186313A2 (en) * 1984-11-30 1986-07-02 United Kingdom Atomic Energy Authority Preparation of dispersible cerium compounds
EP0186313A3 (en) * 1984-11-30 1987-04-08 United Kingdom Atomic Energy Authority Preparation of dispersible cerium compounds

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