Palladium oxide pdo
Palladium(II) oxide
CAS: 1314-08-5
Molecular Formula: OPd
Palladium oxide pdo - Names and Identifiers
| Name | Palladium(II) oxide |
| Synonyms | oxopalladium PALLADIUM OXIDE Palladous oxide Palladium oxide oxygen(-2) anion PALLADIUM(+2)OXIDE PALLADIUM MONOXIDE palladium monoxide PALLADIUM(II) OXIDE Palladium oxide pdo palladiumoxide(pdo) Palladium(II) oxide palladium(+2) cation Palladiumoxideblackpowder palladium(ii) oxide hydrate |
| CAS | 1314-08-5 |
| EINECS | 215-218-3 |
| InChI | InChI=1/O.Pd/rOPd/c1-2 |
| InChIKey | HBEQXAKJSGXAIQ-UHFFFAOYSA-N |
Palladium oxide pdo - Physico-chemical Properties
| Molecular Formula | OPd |
| Molar Mass | 122.42 |
| Density | 8.7g/mLat 25°C(lit.) |
| Melting Point | 870°C(lit.) |
| Water Solubility | practically insoluble |
| Solubility | Insoluble in water, soluble in dilute nitric acid |
| Appearance | Viscous Liquid |
| Specific Gravity | 8.7 |
| Color | Gray to black |
| Odor | Odorless |
| Merck | 14,6993 |
| Storage Condition | Store below +30°C. |
| Sensitive | `sensitive` to light and humidity |
| MDL | MFCD00011172 |
| Physical and Chemical Properties | Density 8.7 melting point 870°C water-soluble practically insoluble |
| Use | Used as reducing agent, oxidant |
Palladium oxide pdo - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
| UN IDs | 1479 |
| WGK Germany | 3 |
| RTECS | RT3592900 |
| TSCA | Yes |
| HS Code | 28439090 |
| Packing Group | II |
Palladium oxide pdo - Nature
Open Data Verified Data
palladium oxide is a black or brown solid. Relative density 8. 70, melting point 870 ℃, insoluble in water, acid, soluble in 48% HBr solution and aqua regia. Micron-sized palladium oxide powder, spherical or dendritic. Shake density 2. lg/cm3. The average particle size was 1.5 um. The specific surface area was 2.05/g.
Last Update：2024-01-02 23:10:35
Palladium oxide pdo - Preparation Method
Open Data Verified Data
palladium oxide can be prepared by reacting palladium chloride with sodium nitrate.
Last Update：2022-01-01 09:06:16
Palladium oxide pdo - Use
Open Data Verified Data
resistors, thick film circuit materials and potentiometer components used in the low resistance range in the electronics industry.
Last Update：2022-01-01 09:06:17
Palladium oxide pdo - Reference Information
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | palladium oxide is a green-blue or amber-colored lump or black powder with a relative density of 8.70 and a melting point of 750 ℃. Palladium oxide decomposes into metal palladium and oxygen when heated to 750 ℃. Palladium oxide is a strong oxidant. It can heat up to emit light when exposed to hydrogen at room temperature, and can also oxidize carbon monoxide into carbon dioxide. Used for reducing agent and catalyst 1. Decarbonylation of aromatic hydrocarbon aldehyde 2. Hydrogen absorption to prepare additives 3. Resistance in low resistance range in electronic industry 4. Raw materials for components such as potentiometers and thick film circuit materials in electronic industry Used as reducing agent and oxidant |
| preparation method | hydrated palladium oxide is insoluble in water and soluble in acid; It is mainly used for preparing catalysts, debenzylation reagents, hydrogen absorption additives and electroplating solutions, and as raw materials for low resistance resistors, potentiometers, thick film circuits, etc. in the electronics industry. The preparation method is as follows: 81 g18wt% hydrochloric acid is added to 10.64g of metal palladium, and 7.1g of chlorine is introduced to obtain chloropalladium acid solution after the metal palladium is completely dissolved; 1.5mol/L KOH solution is added dropwise until the pH value is 7 to obtain a solution containing precipitation; The precipitate is filtered out, washed and filtered with ultra-pure water at 70 ℃, drying at 120 ℃ for 10h to obtain hydrated palladium oxide. The reaction yield of preparing hydrated palladium oxide is 99.3%, and the purity of the obtained hydrated palladium oxide is 99.5%. |
| production method | palladium nitrate is obtained by pyrolysis in air. Ultrafine palladium oxide can be prepared by the reaction of palladium chloride and sodium nitrate. A sufficiently pure PdO suitable for use as a catalyst can be prepared by decomposing Pd(NO3)2. Mix 50g of NaNO3 with 2g of PdCl2 solution containing Pd, evaporate to dry, continue heating (melting will occur in the process), maintain at 270~280 ℃, and then raise the temperature to 350~370 ℃ after a period of time until nitrogen chloride is no longer released. Finally, it is heated at 575~600 ℃ for a short time. The melt was extracted with 200mL of water, leaving a PdO solid. Wash with 1% NaNO3 solution and vacuum drying on concentrated H2SO4. The product contains about 1.5% H2O and 2.5% alkali metal salts. Pure palladium oxide can be obtained by burning palladium in O2, but the PdO thus obtained will lose its catalytic activity. |
Last Update：2024-04-10 22:29:15
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