ISOTOPE EXCHANGE OF THE OXYGEN ATOMS IN MOLECULAR SIEVE ADSORBENTS WITH WATER AND CARBON DIOXIDE

Journal Article · Mon Apr 01 04:00:00 EST 1963 · Journal of Inorganic and Nuclear Chemistry (England) Merged with Inorg. Nucl. Chem. Lett. to form Polyhedron

DOI:https://doi.org/10.1016/0022-1902(63)80052-4· OSTI ID:4708636

Saxena, S C; Taylor, T I

The use of molecular sieve adsorbents for the continuous recovery of H/ sub 2/O from the gas stream of an isotope separation system is complicated by the exchange of oxygen atoms between the water and the adsorbents. The 75 per cent of the oxygen atoms in the molecular sieve adsorbents exchange with H/sub 2/O/sup 18/ in 2 hr at 250 un. Concent 85% C. At 135 un. Concent 85% C, only 24 per cent of the oxygen atoms exchange in 64 hr, and at room temperature the exchange is very slow. Carbon dioxide exchanges with about the same fraction of oxygen atoms in the molecular sieve adsorbents as water does. This exchange probably occurs through small quantities of water vapor since, after prolonged drying under high vacuum at 250 un. Concent 85% C, the rate of exchange with carbon dioxide is somewhat slower. Oxygen gas does not exchange at 250 un. Concent 85% C with molecular sieve adsorbents in the presence or absence of water vapor. (auth)

• Research Organization: Columbia Univ., New York
• NSA Number: NSA-17-023837
• OSTI ID: 4708636
• Journal Information: Journal of Inorganic and Nuclear Chemistry (England) Merged with Inorg. Nucl. Chem. Lett. to form Polyhedron, Journal Name: Journal of Inorganic and Nuclear Chemistry (England) Merged with Inorg. Nucl. Chem. Lett. to form Polyhedron Vol. Vol: 25; ISSN JINCA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ADSORPTION
CARBON DIOXIDE
EVAPORATION
ISOTOPE SEPARATION
ISOTOPIC EXCHANGE
OXYGEN
OXYGEN 18
RECOVERY
TEMPERATURE
WATER