一二三四区视频,亚洲少妇熟女色,日本久热无码视频网,欧美国产日韩大尺度,亚洲a视频,久久少妇一区二区,日韩999无码视频,刺激久久久久久久,啊啊啊啊不要啊在线

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
010-86108875
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

ChemicalBook CAS DataBase List Cesium
7440-46-2

Cesium synthesis

4synthesis methods
Although Cesium metals have been prepared by fused salt electrolysis, the highly reactive nature of the metals complicates the collection step and favors the use of other preparative methods where the metals can be removed in vapor form from the reaction mixture. The oxides, hydroxides, carbonates, halides, sulphates, chromates and nitrates of Cesium have been reduced to the metals by strong reducing metals such as sodium, calcium, magnesium, barium, iron, zirconium, aluminum or silicon at moderately high temperatures. The preferred method, however, involves the reduction of the anhydrous metal chlorides with calcium metal under vacuum. Anhydrous cesium chloride is mixed with a large excess of calcium chips and heated under vacuum at 700-800°C. As the chloride is reduced, metal vapors issue from the reaction mixture and are led under the vacuum to a cooler portion of the vessel where they condense and drop into a collection vessel.
-

Yield:7440-46-2 90%

Reaction Conditions:

in neat (no solvent);byproducts: caesium nitride, caesium silicate; CsN3 was decomposed at 390 °C forming Cs and a yellowish gray residue (contains ca. 70% Cs-nitride beside Cs-silicate and not-reacting Cs-azide);;

References:

Suhrmann, R.;Clusius, K. [Zeitschrift fur anorganische Chemie,1926,vol. 152,p. 55 - 55]

Cesium Related Search:

吕梁市| 台南县| 德钦县| 新疆| 灵石县| 东阿县| 香港| 忻城县| 苗栗县| 偃师市| 仁寿县| 丽水市| 广水市| 乌苏市| 卢湾区| 铜陵市| 吴忠市| 武威市| 和田县| 景洪市| 武冈市| 苍溪县| 信宜市| 莲花县| 阜新市| 广河县| 哈巴河县| 阿合奇县| 辛集市| 察雅县| 遂昌县| 武鸣县| 天门市| 沙河市| 峡江县| 南郑县| 虹口区| 清远市| 宽城| 罗源县| 高州市|