GB863323A - Improvements in the concentration of gaseous isotopes - Google Patents
Improvements in the concentration of gaseous isotopesInfo
- Publication number
- GB863323A GB863323A GB1185358A GB1185358A GB863323A GB 863323 A GB863323 A GB 863323A GB 1185358 A GB1185358 A GB 1185358A GB 1185358 A GB1185358 A GB 1185358A GB 863323 A GB863323 A GB 863323A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nitric oxide
- isotope
- hno3
- formulae
- rectification
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D59/00—Separation of different isotopes of the same chemical element
- B01D59/28—Separation by chemical exchange
- B01D59/32—Separation by chemical exchange by exchange between fluids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D59/00—Separation of different isotopes of the same chemical element
- B01D59/02—Separation by phase transition
- B01D59/04—Separation by phase transition by distillation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D59/00—Separation of different isotopes of the same chemical element
- B01D59/50—Separation involving two or more processes covered by different groups selected from groups B01D59/02, B01D59/10, B01D59/20, B01D59/22, B01D59/28, B01D59/34, B01D59/36, B01D59/38, B01D59/44
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation By Low-Temperature Treatments (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
Nitric oxide having up to about 2% of isotope-containing molecules e.g. 15NO, N17O and N18O and which are further concentrated by rectification (see Group XXVIII) is prepared by disproportionating of dinitrogen tetroxide with water; the tetroxide being formed during the production of nitric acid. Lean nitric oxide gas leaving the rectifier is caused to undergo an exchange reaction with nitric acid whereby the starting isotope concentration is re-established according to the formulae: NO + H15NO3 \sp 15NO + HNO3 and NO + HNO218O \sp N18O + HNO3. Also isotope enriched nitric oxide liquid from the base of the rectifier is treated with nitrous gases and/or nitrous acid as catalyst whereupon the equilibria between individual molecular types readjust themselves according to the formulae: 15NO + N17O \sp NO + 15N17O 15NO + N18O \sp NO + 15N18O and from which mixture 15N17O and 15N18O may be concentrated by rectification.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH4527957 | 1957-04-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB863323A true GB863323A (en) | 1961-03-22 |
Family
ID=4515527
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1185358A Expired GB863323A (en) | 1957-04-23 | 1958-04-14 | Improvements in the concentration of gaseous isotopes |
Country Status (6)
Country | Link |
---|---|
BE (1) | BE567014A (en) |
CH (1) | CH358070A (en) |
DE (1) | DE1208295B (en) |
FR (1) | FR1206682A (en) |
GB (1) | GB863323A (en) |
NL (2) | NL227108A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115025727B (en) * | 2021-10-23 | 2024-04-30 | 苏州思萃同位素技术研究所有限公司 | Preparation device and preparation method of oxygen isotope oxalic acid |
-
0
- NL NL112909D patent/NL112909C/xx active
- NL NL227108D patent/NL227108A/xx unknown
- BE BE567014D patent/BE567014A/xx unknown
-
1957
- 1957-04-23 CH CH358070D patent/CH358070A/en unknown
-
1958
- 1958-04-12 DE DEC16649A patent/DE1208295B/en active Pending
- 1958-04-14 GB GB1185358A patent/GB863323A/en not_active Expired
- 1958-04-21 FR FR1206682D patent/FR1206682A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CH358070A (en) | 1961-11-15 |
NL227108A (en) | |
BE567014A (en) | |
DE1208295B (en) | 1966-01-05 |
FR1206682A (en) | 1960-02-11 |
NL112909C (en) |
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