PL83251B1 - - Google Patents
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- Publication number
- PL83251B1 PL83251B1 PL1972153827A PL15382772A PL83251B1 PL 83251 B1 PL83251 B1 PL 83251B1 PL 1972153827 A PL1972153827 A PL 1972153827A PL 15382772 A PL15382772 A PL 15382772A PL 83251 B1 PL83251 B1 PL 83251B1
- Authority
- PL
- Poland
- Prior art keywords
- chromium
- chromate
- pressure
- atm
- iii
- Prior art date
Links
- AYTAKQFHWFYBMA-UHFFFAOYSA-N chromium(IV) oxide Inorganic materials O=[Cr]=O AYTAKQFHWFYBMA-UHFFFAOYSA-N 0.000 claims description 39
- ABXXWVKOBZHNNF-UHFFFAOYSA-N chromium(3+);dioxido(dioxo)chromium Chemical compound [Cr+3].[Cr+3].[O-][Cr]([O-])(=O)=O.[O-][Cr]([O-])(=O)=O.[O-][Cr]([O-])(=O)=O ABXXWVKOBZHNNF-UHFFFAOYSA-N 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 229940090961 chromium dioxide Drugs 0.000 claims description 13
- IAQWMWUKBQPOIY-UHFFFAOYSA-N chromium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Cr+4] IAQWMWUKBQPOIY-UHFFFAOYSA-N 0.000 claims description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 9
- 230000005294 ferromagnetic effect Effects 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 claims description 4
- 230000005291 magnetic effect Effects 0.000 description 19
- 239000000047 product Substances 0.000 description 19
- 239000011651 chromium Substances 0.000 description 18
- 239000002245 particle Substances 0.000 description 17
- 238000006243 chemical reaction Methods 0.000 description 12
- 230000005415 magnetization Effects 0.000 description 10
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 6
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical group O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 6
- 238000002441 X-ray diffraction Methods 0.000 description 5
- 229910052804 chromium Inorganic materials 0.000 description 5
- 239000013078 crystal Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 2
- 229910000423 chromium oxide Inorganic materials 0.000 description 2
- BFGKITSFLPAWGI-UHFFFAOYSA-N chromium(3+) Chemical compound [Cr+3] BFGKITSFLPAWGI-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 238000005979 thermal decomposition reaction Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229910021607 Silver chloride Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000002083 X-ray spectrum Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- UOUJSJZBMCDAEU-UHFFFAOYSA-N chromium(3+);oxygen(2-) Chemical class [O-2].[O-2].[O-2].[Cr+3].[Cr+3] UOUJSJZBMCDAEU-UHFFFAOYSA-N 0.000 description 1
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 230000005292 diamagnetic effect Effects 0.000 description 1
- OJKANDGLELGDHV-UHFFFAOYSA-N disilver;dioxido(dioxo)chromium Chemical compound [Ag+].[Ag+].[O-][Cr]([O-])(=O)=O OJKANDGLELGDHV-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000005298 paramagnetic effect Effects 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/0302—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity characterised by unspecified or heterogeneous hardness or specially adapted for magnetic hardness transitions
- H01F1/0311—Compounds
- H01F1/0313—Oxidic compounds
-
- 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
- G11B5/70626—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances
- G11B5/70636—CrO2
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/74—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by peak-intensities or a ratio thereof only
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/80—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70
- C01P2002/82—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70 by IR- or Raman-data
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/54—Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
-
- 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
- C01P2006/42—Magnetic properties
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Hard Magnetic Materials (AREA)
- Magnetic Record Carriers (AREA)
- Chemical Treatment Of Metals (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2131671 | 1971-03-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL83251B1 true PL83251B1 (en:Method) | 1975-12-31 |
Family
ID=11179995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL1972153827A PL83251B1 (en:Method) | 1971-03-04 | 1972-03-02 |
Country Status (21)
| Country | Link |
|---|---|
| US (1) | US3929978A (en:Method) |
| JP (1) | JPS515999B1 (en:Method) |
| AT (1) | AT311923B (en:Method) |
| AU (1) | AU452489B2 (en:Method) |
| BE (1) | BE780219A (en:Method) |
| BR (1) | BR7201246D0 (en:Method) |
| CA (1) | CA960434A (en:Method) |
| CH (1) | CH573361A5 (en:Method) |
| CS (1) | CS152410B2 (en:Method) |
| DD (1) | DD100925A5 (en:Method) |
| DE (1) | DE2210059A1 (en:Method) |
| DK (1) | DK137446B (en:Method) |
| ES (1) | ES400413A1 (en:Method) |
| FI (1) | FI53203C (en:Method) |
| FR (1) | FR2128448B1 (en:Method) |
| GB (1) | GB1343623A (en:Method) |
| NL (1) | NL7202599A (en:Method) |
| NO (1) | NO128866B (en:Method) |
| PL (1) | PL83251B1 (en:Method) |
| SE (1) | SE369185B (en:Method) |
| ZA (1) | ZA721366B (en:Method) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1012202B (it) | 1974-05-09 | 1977-03-10 | Montedison Spa | Procedimento per la produzione di biossido di cromo ferromagnetico |
| IT1042133B (it) * | 1975-08-28 | 1980-01-30 | Stoppani P & Co | Procedimento per il recupero e la valorizzazione degli scarti della fabbricazione dell anidri de cromica |
| GB1516774A (en) * | 1975-10-10 | 1978-07-05 | Anvar | Process for preparing chromium dioxide |
| IT1045191B (it) * | 1975-10-31 | 1980-05-10 | Montedison Spa | Procedimento per la produzione di biossido di cromo ferromagnetico |
| DE3536116A1 (de) * | 1985-10-10 | 1987-04-16 | Basf Ag | Verfahren zur stabilisierung von nadelfoermigem ferromagnetischem chromdioxid |
| US4698220A (en) * | 1986-03-28 | 1987-10-06 | E. I. Du Pont De Nemours And Company | Partitioned reduction process for ferromagnetic chromium dioxide |
| US4769165A (en) * | 1987-01-20 | 1988-09-06 | E. I. Du Pont De Nemours And Company | Process for synthesis of ferromagnetic chromium dioxide |
| DE3837646A1 (de) * | 1988-11-05 | 1990-05-10 | Basf Ag | Nadelfoermiges, im wesentlichen aus chromdioxid bestehendes, ferromagnetisches material |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3117093A (en) * | 1960-10-24 | 1964-01-07 | Du Pont | Process for the preparation of ferromagnetic chromium dioxide |
| FR1298581A (fr) * | 1961-07-12 | 1962-07-13 | Du Pont | Procédé de fabrication de bioxyde de chrome magnétique, produits obtenus et leur utilisation dans les éléments d'enregistrement magnétique |
| US3451771A (en) * | 1966-10-27 | 1969-06-24 | Du Pont | Preparation of ferromagnetic cro2 by heating cro3 in the presence of o2 and cr2o3 |
| US3486851A (en) * | 1967-03-01 | 1969-12-30 | Du Pont | Formation of ferromagnetic cro2 by decomposition of higher valent chromium oxides |
-
1972
- 1972-02-23 AU AU39268/72A patent/AU452489B2/en not_active Expired
- 1972-02-29 NL NL7202599A patent/NL7202599A/xx not_active Application Discontinuation
- 1972-02-29 NO NO00616/72A patent/NO128866B/no unknown
- 1972-02-29 DK DK91872AA patent/DK137446B/da unknown
- 1972-02-29 FI FI544/72A patent/FI53203C/fi active
- 1972-02-29 SE SE02488/72A patent/SE369185B/xx unknown
- 1972-03-01 ZA ZA721366A patent/ZA721366B/xx unknown
- 1972-03-01 CH CH297272A patent/CH573361A5/xx not_active IP Right Cessation
- 1972-03-01 US US231028A patent/US3929978A/en not_active Expired - Lifetime
- 1972-03-01 FR FR7206997A patent/FR2128448B1/fr not_active Expired
- 1972-03-01 GB GB962272A patent/GB1343623A/en not_active Expired
- 1972-03-01 CS CS1357A patent/CS152410B2/cs unknown
- 1972-03-02 PL PL1972153827A patent/PL83251B1/pl unknown
- 1972-03-02 JP JP47021104A patent/JPS515999B1/ja active Pending
- 1972-03-02 AT AT175272A patent/AT311923B/de not_active IP Right Cessation
- 1972-03-02 DE DE19722210059 patent/DE2210059A1/de active Pending
- 1972-03-03 BE BE780219A patent/BE780219A/xx unknown
- 1972-03-03 BR BR1246/72*[A patent/BR7201246D0/pt unknown
- 1972-03-03 ES ES400413A patent/ES400413A1/es not_active Expired
- 1972-03-03 DD DD161349A patent/DD100925A5/xx unknown
- 1972-03-03 CA CA136,259A patent/CA960434A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BR7201246D0 (pt) | 1973-06-07 |
| AU452489B2 (en) | 1974-08-16 |
| CH573361A5 (en:Method) | 1976-03-15 |
| AU3926872A (en) | 1973-08-30 |
| AT311923B (de) | 1973-12-10 |
| ES400413A1 (es) | 1975-01-01 |
| FR2128448A1 (en:Method) | 1972-10-20 |
| ZA721366B (en) | 1972-11-29 |
| DK137446B (da) | 1978-03-06 |
| DE2210059A1 (de) | 1972-09-07 |
| NO128866B (en:Method) | 1974-01-21 |
| US3929978A (en) | 1975-12-30 |
| GB1343623A (en) | 1974-01-16 |
| FI53203C (en:Method) | 1978-03-10 |
| FI53203B (en:Method) | 1977-11-30 |
| DK137446C (en:Method) | 1978-08-14 |
| FR2128448B1 (en:Method) | 1977-04-01 |
| CA960434A (en) | 1975-01-07 |
| DD100925A5 (en:Method) | 1973-10-12 |
| JPS515999B1 (en:Method) | 1976-02-24 |
| CS152410B2 (en:Method) | 1973-12-19 |
| BE780219A (fr) | 1972-09-04 |
| SE369185B (en:Method) | 1974-08-12 |
| NL7202599A (en:Method) | 1972-09-06 |
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