13981-34-5
Neon20
CAS: 13981-34-5
Molecular Formula: Ne
13981-34-5 - Names and Identifiers
| Name | Neon20 |
| Synonyms | Neon20 Isotope 20Ne |
| CAS | 13981-34-5 |
13981-34-5 - Physico-chemical Properties
| Molecular Formula | Ne |
| Molar Mass | 20.1797 |
| Storage Condition | Room Temprature |
13981-34-5 - Reference Information
| introduction | neon (Ne) is a rare inert gas with three isotopes: 20Ne, 21Ne and 22Ne, of which 20Ne accounts for 90.92% and 22Ne only accounts for a small part. In the prior art, p167-168 in the 24th issue of the TheJournalOfChemicalPhysics in 1956 reported that Clausius et al. prepared more than 99% 22Ne and 20Ne and 13% 21Ne with a general thermal diffusion column, and then used deuterium methane as an auxiliary gas to further concentrate 21Ne to 99.6%. In 1940 he successfully extracted 99.8% 20Ne and 99.7% 22Ne 2.5 liters each. In 1969, the Mound Laboratory of the United States Atomic Energy Commission reported that they used a four-column four-stage thermal diffusion tower cascade to separate neon isotopes. The 99.95% 20Ne can be obtained with a yield of 4.2 liters/day, 2.0% 21 Ne0.56 liters/day, 99.8% 22 Ne0.22 liters/day. This method prepares high abundance neon isotope gas with low yield and long period. |
| use | neon -20 isotope gas is a useful research chemical. |
| preparation | a set of 7-tower four-stage neon diffusion tower device system. The first cascade consists of 2 towers connected in parallel, and the remaining quaternary is composed of 1 tower each. The height of the tower is 6m, the diameter of the cold wall of the tower is 13.5,13.9,14.5,17.2,18.6 and 19.4mm respectively. There is a nickel-chromium electric heating wire with a diameter of 1mm in the center of the tower. Cold and hot reflux pipes are connected between the tower and the tower. The diameter of the reflux pipe is 5mm, the heating electric heating wire is 600 ℃, the pressure in the diffusion tower is 50mmHg, the temperature in the hot reflux pipe is 100 ℃, and the cooling water temperature is 25 ℃. Ne feed gas with an abundance of 9.22% is passed into the diffusion tower. After 5 days, the abundance of 22Ne can reach 60%. If the discharge abundance is 60% 22Ne gas, 600 ml can be produced per day; if the discharge abundance is 50% 22Ne gas, 800 ml can be produced per day; if the discharge abundance is 40% 22Ne gas, 1000 ml can be produced per day. The purity of product gas can reach 99%. |
Last Update：2024-04-09 21:04:16
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CAS: 13981-34-5
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CAS: 13981-34-5
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
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