ES390901A1 - Method for making anhydrous chromium sesquioxide by reducing a hexavalent chromium compound - Google Patents

Method for making anhydrous chromium sesquioxide by reducing a hexavalent chromium compound

Info

Publication number
ES390901A1
ES390901A1 ES390901A ES390901A ES390901A1 ES 390901 A1 ES390901 A1 ES 390901A1 ES 390901 A ES390901 A ES 390901A ES 390901 A ES390901 A ES 390901A ES 390901 A1 ES390901 A1 ES 390901A1
Authority
ES
Spain
Prior art keywords
reducing
hexavalent chromium
sesquioxide
chromium compound
compound
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
ES390901A
Other languages
Spanish (es)
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.)
Ceraver SA
Original Assignee
Ceraver SA
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 Ceraver SA filed Critical Ceraver SA
Publication of ES390901A1 publication Critical patent/ES390901A1/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/24—Chromium, molybdenum or tungsten
    • B01J23/26—Chromium
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G37/00—Compounds of chromium
    • C01G37/02—Oxides or hydrates thereof
    • 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
    • C01P2006/80—Compositional purity
    • C01P2006/82—Compositional purity water content
    • 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
    • C01P2006/90—Other properties not specified above

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Catalysts (AREA)
  • Chemical Treatment Of Metals (AREA)

Abstract

Process for the manufacture of anhydrous chromium sesquioxide by reduction of a hexavalent chromium compound, not thermally decomposable at a temperature below 300ºC, preferably chromic anhydride, characterized in that the hexavalent chromium compound is first subjected to heating in an atmosphere non-reducing between approximately 137 and 280ºC, then secondly to a heating in a reducing atmosphere between approximately 250 and 350ºC. (Machine-translation by Google Translate, not legally binding)
ES390901A 1970-05-06 1971-05-05 Method for making anhydrous chromium sesquioxide by reducing a hexavalent chromium compound Expired ES390901A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7016592A FR2104656B1 (en) 1970-05-06 1970-05-06

Publications (1)

Publication Number Publication Date
ES390901A1 true ES390901A1 (en) 1973-07-01

Family

ID=9055184

Family Applications (1)

Application Number Title Priority Date Filing Date
ES390901A Expired ES390901A1 (en) 1970-05-06 1971-05-05 Method for making anhydrous chromium sesquioxide by reducing a hexavalent chromium compound

Country Status (11)

Country Link
US (1) US3749595A (en)
BE (1) BE766446A (en)
CA (1) CA932124A (en)
CH (1) CH531990A (en)
DE (1) DE2122299A1 (en)
ES (1) ES390901A1 (en)
FR (1) FR2104656B1 (en)
GB (1) GB1341607A (en)
IT (1) IT939715B (en)
LU (1) LU63108A1 (en)
NL (1) NL7106248A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3959182A (en) * 1969-08-19 1976-05-25 Rohm And Haas Company Catalyst compositions and process for producing acrylic acid or methacrylic acid utilizing such catalyst
JPS5343918B2 (en) * 1973-02-02 1978-11-24
US4382104A (en) * 1979-05-21 1983-05-03 Kennecott Corporation Method for coating alumina containing refractory fibers with chromium oxide
US5380554A (en) * 1993-07-28 1995-01-10 The United States Of America As Represented By The Secretary Of The Navy Chromic oxide coatings by thermal decomposition of chromic acid anhydride (CrO3)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2294414A (en) * 1937-11-09 1942-09-01 Phillips Petroleum Co Catalyst
US2270165A (en) * 1937-12-29 1942-01-13 Shell Dev Catalyst
FR1084362A (en) * 1952-07-16 1955-01-19 Diamond Alkali Co Process for treating alkali metal chromates

Also Published As

Publication number Publication date
CA932124A (en) 1973-08-21
BE766446A (en) 1971-10-29
IT939715B (en) 1973-02-10
LU63108A1 (en) 1972-03-03
FR2104656B1 (en) 1973-11-23
GB1341607A (en) 1973-12-25
NL7106248A (en) 1971-11-09
US3749595A (en) 1973-07-31
DE2122299A1 (en) 1971-11-25
CH531990A (en) 1972-12-31
FR2104656A1 (en) 1972-04-21

Similar Documents

Publication Publication Date Title
ES279412A1 (en) Process for the manufacture of sections
ES393297A1 (en) Exchange process
ES327186A1 (en) Procedure for the preparation of a solid compound of a method of transition resulting from the reaction of a composite of a transition metal with the hydroxychloride of a divalent metal. (Machine-translation by Google Translate, not legally binding)
ES390697A1 (en) Heat treatment process for non-alloyed low-carbon structural steel
ES389462A1 (en) Process for the production of anhydrous potassium magnesium sulfate material with low hygroscopicity from hydrated potassium magnesium sulfate material
ES390901A1 (en) Method for making anhydrous chromium sesquioxide by reducing a hexavalent chromium compound
ES406299A1 (en) Procedure and apparatus for the manufacture of bearings for moderate efforts. (Machine-translation by Google Translate, not legally binding)
ES391867A1 (en) Apparatus for bending sheet material
ES250886A1 (en) Process for the manufacture of refractory materials and resultant product
ES404726A1 (en) Metal consolidation
ES283295A1 (en) Procedure for preparing 1,4-bis- (ciclopentadienil) -buteno-2-dimero (Machine-translation by Google Translate, not legally binding)
FR2104964A1 (en) Reduction of cooling of continuous castings - in secondary cooling zo
ES328262A1 (en) Procedure for the treatment of metals. (Machine-translation by Google Translate, not legally binding)
ES386098A1 (en) Processes for making cutting instruments
ES297641A1 (en) Procedure for the treatment of the surface of a metal in mass (Machine-translation by Google Translate, not legally binding)
ES391580A1 (en) Waste heat recovery system
ES417411A1 (en) A method of plastically defining a steel material at a temperature of less than 500 deg. C. (Machine-translation by Google Translate, not legally binding)
ES302371A1 (en) Procedure for the manufacture of flat glass. (Machine-translation by Google Translate, not legally binding)
ES294357A1 (en) Procedure for the obtaining of new nonapeptures (Machine-translation by Google Translate, not legally binding)
ES364197A1 (en) Procedure for the obtaining of metals by reducing his halides. (Machine-translation by Google Translate, not legally binding)
ES209982A1 (en) A procedure for the preparation of 3; 17-dioles of the ciclopentanopolihidrofenantreno series (Machine-translation by Google Translate, not legally binding)
ES285440A2 (en) Procedure for obtaining a laminar substitute leather material (Machine-translation by Google Translate, not legally binding)
ES376825A1 (en) A procedure to metalize the surfaces of synthetic materials. (Machine-translation by Google Translate, not legally binding)
ES333743A1 (en) Procedure to prepare a crystalline composition based on violet ticl3. (Machine-translation by Google Translate, not legally binding)
ES219815A1 (en) Method of production of atmospheres for the gaseous cementation of ferrous alloys (Machine-translation by Google Translate, not legally binding)