Catalysis of deuterium transfer between liquid chloroform and water by anion-exchange resins

Journal Article · Tue Jan 01 04:00:00 EST 1985 · J. Catal.; (United States)

DOI:https://doi.org/10.1016/0021-9517(85)90168-X· OSTI ID:6082837

Symons, E A; Bonnett, J D

Anion-exchange resins in the hydroxide form have been successfully utilized for catalysis of deuterium transfer between water and liquid chloroform under stirred three-phase slurry conditions. In-solution rate constants for CDCl/sub 3//H/sub 2/O exchange obtained at 15-35/sup 0/C with liquid chloroform and 0.10 mol/liter NaOH solution under stirred conditions are in good agreement with literature data measured in the absence of bulk chloroform. At 25/sup 0/C the resins tested, Rexyn 201(OH) and Ionac ASB-1P(OH), are approx.25x more effective per mole of /sup -/OH present than NaOH when they are used as whole beads. A further improvement is observed if the beads are crushed, but the latter state would be less suitable for commercial-scale application. The solubility of chloroform in the aqueous phase under isotope-exchange conditions was required to calculate the in-solution rate constants for exchange. A method was developed to obtain chloroform solubilities in 0.10 mol/liter NaOH solution and aqueous resin slurries; equilibrated solution samples were treated with 1 mol/liter NaOH to hydrolyze the dissolved CHCl/sub 3/ to chloride ion, which was then analyzed by specific ion electrode. 25 references, 2 figures, 1 table.

• Research Organization: Atomic Energy of Canada Ltd., Chalk River, Ontario
• OSTI ID: 6082837
• Journal Information: J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 93; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400202* -- Isotope Effects
Isotope Exchange
& Isotope Separation
CATALYSIS
CHLORINATED ALIPHATIC HYDROCARBONS
CHLOROFORM
DATA
DEUTERIUM
ELEMENTS
EXPERIMENTAL DATA
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
INFORMATION
ION EXCHANGE MATERIALS
ISOTOPES
ISOTOPIC EXCHANGE
LIGHT NUCLEI
MATERIALS
NONMETALS
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXYGEN COMPOUNDS
STABLE ISOTOPES
WATER