Stability of the Molecular Sieve Structure in Hostile Environments
Abstract
Proposals for the use of molecular sieves as regenerable CO2 and/or H2O absorbers in closed spaces have usually been based on their demonstrated efficiencies in pure atmospheres. The previously unknown effect of thermal cycling in more hostile environments containing a nominally stable halogenated hydrocarbon has been investigated. While the test halocarbon (dichlorodifluoromethane) was not itself deleterious, the acid products resulting from the molecular sieve-promoted decomposition of the compound caused structural damage to the sieves, which severely affected their capacities for CO2 and H2O. Sieves of the 5A and 10A type were investigated under a variety of conditions, with the 5A sieve being the more resistant to damage.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 07, 1970
- Accession Number
- AD0716748
Entities
People
- D. D. Williams
- E. T. Johnson
- Roman R. Miller
Organizations
- United States Naval Research Laboratory