Difference between revisions of "Transition metal monoxides"
From apm
m (reformatting & headlines) |
(added info about TiO Hongquiite (Mohs 5-6)) |
||
| (2 intermediate revisions by the same user not shown) | |||
| Line 7: | Line 7: | ||
* ScO - no monoxide? (well its a rare earth anyway) | * ScO - no monoxide? (well its a rare earth anyway) | ||
----- | ----- | ||
| − | * TiO - [https://en.wikipedia.org/wiki/Titanium(II)_oxide Titanium(II)_oxide] - | + | * TiO - [https://en.wikipedia.org/wiki/Titanium(II)_oxide Titanium(II)_oxide] - [http://webmineral.com/data/Hongquiite.shtml Hongquiite (webminera.com)] - 4.96g/ccm | 5.36g/ccm(mineral) - '''Mohs 5 to 6''' - 1,750°C |
* VO - [https://en.wikipedia.org/wiki/Vanadium(II)_oxide Vanadium(II)_oxide] - no mineral - 5.758g/ccm - Mohs ?? - 1,789 °C | * VO - [https://en.wikipedia.org/wiki/Vanadium(II)_oxide Vanadium(II)_oxide] - no mineral - 5.758g/ccm - Mohs ?? - 1,789 °C | ||
* CrO - [https://en.wikipedia.org/wiki/Chromium(II)_oxide Chromium(II)_oxide] - no mineral - only powders by thermodynamic means - 300°C (low!) - Mohs ?? | * CrO - [https://en.wikipedia.org/wiki/Chromium(II)_oxide Chromium(II)_oxide] - no mineral - only powders by thermodynamic means - 300°C (low!) - Mohs ?? | ||
| Line 23: | Line 23: | ||
There is more metal than oxygen but the material is still transparent. Odd.<br> | There is more metal than oxygen but the material is still transparent. Odd.<br> | ||
Maybe because copper is pretty noble metal? | Maybe because copper is pretty noble metal? | ||
| + | ----- | ||
| + | More scarce silver (in the copper group below copper) does the same but the resulting material has much worse properties. | ||
| + | * Ag<sub>2</sub>O - [https://en.wikipedia.org/wiki/Silver_oxide Silver_oxide] - 7.14g/ccm - '''Mohs ??''' - decompoes ≥ 200 °C - slightly water soluble - '''cubic (but...)''' | ||
= Related = | = Related = | ||
| Line 31: | Line 34: | ||
* [https://en.wikipedia.org/wiki/Category:Transition_metal_oxides Wikipedia Category:Transition_metal_oxides] | * [https://en.wikipedia.org/wiki/Category:Transition_metal_oxides Wikipedia Category:Transition_metal_oxides] | ||
| + | |||
| + | [[Category:Base materials with high potential]] | ||
Latest revision as of 09:07, 14 April 2021
Unless otherwise noted crystal structure is simple cubic like table salt NaCl.
Typical (with a few exceptions) is 1900°C melting point and Mohs 5.
Monometal monoxides
- ScO - no monoxide? (well its a rare earth anyway)
- TiO - Titanium(II)_oxide - Hongquiite (webminera.com) - 4.96g/ccm | 5.36g/ccm(mineral) - Mohs 5 to 6 - 1,750°C
- VO - Vanadium(II)_oxide - no mineral - 5.758g/ccm - Mohs ?? - 1,789 °C
- CrO - Chromium(II)_oxide - no mineral - only powders by thermodynamic means - 300°C (low!) - Mohs ??
- MnO - Manganese(II)_oxide - Manganosite - 5.364g/ccm - Mohs 5 to 6 - 1,945 °C - water insoluble
- FeO - Iron(II)_oxide - Wüstite - 5.7g/ccm - Mohs 5.0 to 5.5 - 1,377°C - water insoluble
- CoO - Cobalt(II)_oxide - no mineral? - 6.45g/ccm - Mohs ?? - 1,933°C - water insoluble
- NiO - Nickel(II)_oxide - Bunsenite 6.898g/ccm - Mohs 5.5 - 1,955°C - watersolubility negligible
- CuO - Copper(II)_oxide - tenorite 6.5g/ccm - Mohs 3.5 to 4.0 - 1,326 °C - water insoluble - Monoclinic
- ZnO - Zinc_oxide - [1] - 5.64–5.68g/ccm - Mohs 4 - 1,974°C (decomposes) - watersolubility minute - Hexagonal
Dimetal monoxides
- Cu2O - Copper(I)_oxide - Cuprite - 6.14g/ccm - Mohs 3.5 to 4 - 1,232°C - water insoluble - cubic (but...)
There is more metal than oxygen but the material is still transparent. Odd.
Maybe because copper is pretty noble metal?
More scarce silver (in the copper group below copper) does the same but the resulting material has much worse properties.
- Ag2O - Silver_oxide - 7.14g/ccm - Mohs ?? - decompoes ≥ 200 °C - slightly water soluble - cubic (but...)
