Accession Number : AD0816999

Title :   STUDY OF STABILIZATION ON HYDROGEN ATOMS AT 77 K AND HIGHER TEMPERATURES.

Descriptive Note : Semi-annual technical rept. no. 2, 27 Dec 66-26 Jun 67,

Corporate Author : UNITED AIRCRAFT RESEARCH LABS EAST HARTFORD CT

Personal Author(s) : Ultee, Casper J. ; Kepford, Chauncey

Report Date : JUL 1967

Pagination or Media Count : 30

Abstract : A number of aqueous systems including acids, bases, salts, and some organic materials were irradiated with a Co-60 gamma-source, and then examined by ESR spectroscopy. H-atoms were found in sulfuric, phosphoric, perchloric and hydrochloric acid and in a number of phosphates. The H-atoms are unstable at 77 K in HC1 solutions. In H2SO4 and H3PO4 solutions there is an initial fast decay over a period of 20 to 40 hours, after which the sample is stable or decays very slowly. The H-atoms in perchloric acid solutions are stable at 77 K. A number of adsorbants were irradiated and examined by ESR both in the 'activated' state and when loaded with various materials. A Corning porous glass, various molecular sieves and some mixed silica alumina catalyst gave stable H-atoms when loaded with H2O. The yields are generally lower than in the aqueous systems described above. (Author)

Descriptors :   (*HYDROGEN, RADIOACTIVE ISOTOPES), (*RADIATION CHEMISTRY, HYDROGEN), BASES(CHEMISTRY), ORGANIC COMPOUNDS, SALTS, SPECTROSCOPY, ELECTRON PARAMAGNETIC RESONANCE, INORGANIC ACIDS, HYDROCHLORIC ACID, PHOSPHORIC ACIDS, SULFURIC ACID, PERCHLORIC ACID, RADIOACTIVE DECAY, FREE RADICALS, ATOMS, IONS, CONCENTRATION(CHEMISTRY), ADSORPTION, STABILIZATION.

Subject Categories : Inorganic Chemistry
      Radiation and Nuclear Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE