THE ENRICHMENT OF THE RARE CARBON ISOTOPE BY A CHEMICAL METHOD

Journal Article · Tue Apr 01 04:00:00 EST 1958 · Zhur. Fiz. Khim.

OSTI ID:4324788

Shaposhnikov, Yu K

The isotope exchange reaction between CO/sub 2/ and an aqueous solution of monoethanolamine bicarbonate was used for the enrichment of the rare carbon isotope. The radioactive isotope C/sup 14/ was used as indicator. Monoethanolamine bicarbonate was decomposed by simply boiling in a boiler. Activated carbon and silica gel were employed in the exchange column as fillers. The effect of the monoethanolamine bicarbonate concentration and of the temperature in the exchange column on the separation factor was established. Maximum separation of the carbon isotope was attained at a temperature in the exchange column of 20 d with a 0.9 to 1.0 M solution of the bicarbonate. Carbonic anhydrase was used to increase the exchange reaction, its addition to the bicarbcnate solution increasing the separation factor of the column and lowering the time required to attain equilibrium in the column at equal concentrations of the products. The addition of carbonic anhydrase to the solution in operation lowers the CO/sub 2/ solubility in the boiling monoethanolamine, making for complete return of the CO/sub 2/ to the column. A similar effect is observed on adding ethyl alcohol to the solution. (tr-auth)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-12-013833
• OSTI ID: 4324788
• Journal Information: Zhur. Fiz. Khim., Journal Name: Zhur. Fiz. Khim. Vol. Vol: 32
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

ACTIVATED CARBON
AMINES
BOILING
CARBON 14
CARBON DIOXIDE
CARBON ISOTOPES
CARBONATES
CARBONIC ANHYDRASE
CHEMISTRY
COLLOIDS
CONCENTRATION
DECOMPOSITION
EFFICIENCY
ENRICHMENT
ENZYMES
ETHANOL
EXTRACTION COLUMNS
INDICATORS
ISOTOPE SEPARATION
ISOTOPIC EXCHANGE
LABELLED COMPOUNDS
MECHANICAL STRUCTURES
PYROLYSIS
QUANTITY RATIO
RADIOCHEMISTRY
SEPARATION FACTOR
SILICON OXIDES
SOLUBILITY
SOLUTIONS
TEMPERATURE
TRACER TECHNIQUES
WATER