Was bismuth dioxide?
A type of pure bismuth triooxide ( bismuth oxide Nanopowder), has three types. A type of yellow monoclinic cells has a relative density of 8.9 and a melting point of 825. They are soluble in acid, insoluble with water and alkali. A type b is bright yellow-orange tetragonal crystals, relative density 8.55, melting temperature 860, insoluble but dissolves in water. It can be easily reduced to metallic Bismuth using hydrogen and hydrocarbons. A special material, d-2O3, is made with cubic fluorite minerals. The crystal structure of d-Bi2O3 has 1/4 vacant oxygen ion location, which gives it a high oxygen ion conductivity. Electronic ceramic powder, electronic materials, photoelectric materials and high-temperature superconducting material are the main applications of bismuth dioxide. To be used as an essential additive to electronic ceramic powder materials it must have a purity of at least 99.15%. These are zinc oxide varistors as well ceramic capacitors and ferrite magnet materials.
Bismuth oxide synthesis
Aqueous sodium hydroxide without carbon dioxide was added to the bismuth-nitrate solution at 80-90°C. The solution does not become alkaline through precipitation, so a white volume-swelling bismuthoxide hydrate Bi(OH),3 precipitates. To dehydrate the solution into yellow bismuth triooxide, heat it briefly and stir. Once the solution has been filtered, washed, and dried, it can then be used to make bismuth oxide.
In a nitrogen atmosphere, the solution was dissolved in 0.1 mole/L bismuth citrate. To combine them, an 1.5 mole/L sodium hydroxide solution without carbon dioxide was droppedwise. After precipitation, the solution remains alkaline. After being heated in a solution, a white volume-expanded bismuth hydrate bi(OH)3 precipitates. However, the solution is then dehydrated to become light yellow bismuth Trioxide. Decant wash fifteen times using water without carbon dioxide or air. After drying, filter the solution and dry.
After melting the bismuth metal, an arc forms between graphite electrodes. The arc will heat up and then oxidize in the oxygen flow. You should place the crucible in a large container and ensure that oxygen is continuously available. Rapidly, b-bismuth-trioxide is formed at 750 to 800°C. The product can then be quenched with water or placed on a cold plate to form a high temperature phase b-type.
(aka. Technology Co. Ltd. (aka. High purity, small particles size and low impurity are the hallmarks of Bi2O3 Powder. If the price is lower, Contact us.
Inquiry us
