A Laboratory Study of the Dielectric Heating of Molecular Sieve Material.
Abstract
Rapid desorption of CO2 and H2O from zeolite molecular sieve bed was initiated by the application of a high energy radio frequency field. In the experimental arrangement, molecular sieve material (0.5 Kg) comprised the dielectric between the plates of a specially designed, vacuum evacuable, capacitor which formed part of a high voltage L, C-pi coupled network. After application of a 13.56 MHz RF field at power levels of 0.5-1.5 KW, the loaded sieve bed experienced a rapid increase in temperature to a plateau level near 100 C. The CO2 level in the evolving gas increased rapidly with temperature to 100 C and peaked shortly thereafter, accompanied by significant desorption of water. At this point, rapid circuit detuning occurred and a very high reflected power level was maintained during the remainder of the heating process. Anhydrous molecular sieves containing CO2 do not absorb RF energy to any significant extent. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 27, 1980
- Accession Number
- ADA086783
Entities
People
- R. A. Demarco
- R. R. Smardzewski
Organizations
- United States Naval Research Laboratory