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Physical techniques in the study of silver catalysts for ethylene oxidation.
Abstracts 196----202
Basic Science and 51.
Physics, Astronomy and Geophysics 51 : 14
Calcium Atomic Beam Source and Interference Beyond Two Meter Retardation. See Abstract No. 3. 51 : 19
Design of High-Resolution Monochromator for the Vacuum Ultra-violet. An Application of Off-Plane Eagle Mounting. See Abstract No. 82.
291
Engineering
containing various quantities of BaO, TiF4 and Na20. Details of the techniques employed for carrying out the measurements are discussed. Interpretation of the mass changes observed in the bulk material indicates that " d e h y d r a t i o n " of TiO~ is complete at 800 ° and that incipient decomposition of bulk TiO2 occurs at 875 ° in a dynamic vacuum of 10-6 mm. The reversible oxygen adsorption is believed to occur at surface impurity centers. (Author) A. W. Czanderna and J. M. Honig, J. Phys. Chem., 63, 620-626, April 1959.
51 : 19
Phase Changes on Reflection from Evaporated Chromium Films. See Abstract No. 83.
The Theory of the High Frequency Brush Discharge.
52
200. Chemical Effects of Low Energy Electrons. R. R. Williams, Jr., J. Phys. Chem., 63, 776-780, June 1959.
51 : 19 See
52
201. Dissociation of C2HsT and 1, 2-C2H4BrBrs~ by d-Decay. S. Wexler and D. C. Hess, J. Phys. Chem., 62, 1382-1389, Nov.
Abstract No. 84.
Dissipation of Planetary Atmospheres.
51 : 34 See Abstract No. 134.
1958. 52:16
The Time Lag in Diffusion IV. 52.
See Abstract No. 35.
Physical Chemistry
52 : 16 : 30 52
196. Surface Functionality of Amorphous Silica by Infrared Spectroscopy. R. S. McDonald, J. Phys. Chem., 62, 1168-1178, Oct. 1958.
Surface Reactions on Evaporated Palladium Films. See Abstract No. 45.
Diffusion of Silver in Silver Sulfide.
52 : 30 See Abstract No. 102.
52
197. The Molecular Composition of Sodium Iodide Vapor from Molecular Weight Measurements. United States. A technique has been developed for the determination Of the molecular weight of vapors at high temperatures, by measurement of the pressure at constant vapor density, the pressure measuring device being a molten gold manometer. For the dissociation of Na212 into NaI measurements from 1175 to 1350°K indicate a AE ° of 40.2 kcal. mole -z and a AS ° o f 27.0 e.u. at 1260°K. (Author) S. Datz and W. T. Smith, Jr., J. Phys. Chem., 63, 938-940, June 1959.
Heterogeneous
52 : 30 See
Reaction Studies by Infrared Absorption.
Abstract No. 103. 52 : 30
Physical Techniques in the Study of Silver Catalysts for Ethylene Oxidation. See Abstract No. 104. 52 : 30
Calculation of the Performance of a High-Vacuum Thermionie Energy Converter. See Abstract No. 106. 52 : 30
52
198. Ion-Molecule Reactions of 1, 3-Butadiene, of Acetylene and of Acetylene-Methane Mixtures. United States. The reactions with molecules of positive ions
Selective Delineation of Screw Dislocations by Cathodic Sputtering. See Abstract No. 107. 52 : 43 See Abstract
formed in the electron bombardment of 1, 3-butadiene, of acetylene and of acetylene-methane mixtures in the ionization chamber of the mass spectrometer have been investigated. Appearance potentials of the more important primary ions of 1, 3-butadiene have been measured as well as the appearance potentials of all secondary ions. The heats and cross-sections of ion-molecule reactions have been calculated. (Author)
Irradiation of Polyethylene. IV. Oxidation Effects.
R. Barker, W. H. Hamill, and R. R. Williams, Jr., J. Phys. Chem., 63, 825-828, June 1959.
202. Magnetic Ceramics. VI. Evaluation of Some Methods of Nickel Ferrite Formation.
52
199. Interaction of Oxygen with Titanium Dioxide. United States. Reversible oxygen adsorption has been measured on commercial grade titanium dioxide powder at 500, 700 and 900 ° as a function of the ambient pressure by a weighing technique. No oxygen adsorption is detectable in highly purified TiO2 in the same temperature range. Mass losses have been recorded in a dynamic high vacuum as a function of temperature for highly purified TiO~ " bulk " and also for purified TiO~
No. 180.
53.
Metallurgy,
Ceramics and Inorganic Chemistry 53
The extent of nickel ferrite formation, as affected by four preparatory techniques, was investigated by determining the magnetic moment of the reacted powder with a vibrating-coil magnetometer. The oxide, carbonate, hydroxide, and oxalate methods were used. At low temperatures the hydroxide and oxalate techniques were found to give the greatest yield of ferrospinel. The hydroxide method yielded a magnetic material by precipitation. Weight-loss measurements were correlated to the magnetic data. (Author) George Economos, J. Amer. Ceram. Soe., 42, 628-632, Dec. 1959.
Basic Science and 51.
Physics, Astronomy and Geophysics 51 : 14
Calcium Atomic Beam Source and Interference Beyond Two Meter Retardation. See Abstract No. 3. 51 : 19
Design of High-Resolution Monochromator for the Vacuum Ultra-violet. An Application of Off-Plane Eagle Mounting. See Abstract No. 82.
291
Engineering
containing various quantities of BaO, TiF4 and Na20. Details of the techniques employed for carrying out the measurements are discussed. Interpretation of the mass changes observed in the bulk material indicates that " d e h y d r a t i o n " of TiO~ is complete at 800 ° and that incipient decomposition of bulk TiO2 occurs at 875 ° in a dynamic vacuum of 10-6 mm. The reversible oxygen adsorption is believed to occur at surface impurity centers. (Author) A. W. Czanderna and J. M. Honig, J. Phys. Chem., 63, 620-626, April 1959.
51 : 19
Phase Changes on Reflection from Evaporated Chromium Films. See Abstract No. 83.
The Theory of the High Frequency Brush Discharge.
52
200. Chemical Effects of Low Energy Electrons. R. R. Williams, Jr., J. Phys. Chem., 63, 776-780, June 1959.
51 : 19 See
52
201. Dissociation of C2HsT and 1, 2-C2H4BrBrs~ by d-Decay. S. Wexler and D. C. Hess, J. Phys. Chem., 62, 1382-1389, Nov.
Abstract No. 84.
Dissipation of Planetary Atmospheres.
51 : 34 See Abstract No. 134.
1958. 52:16
The Time Lag in Diffusion IV. 52.
See Abstract No. 35.
Physical Chemistry
52 : 16 : 30 52
196. Surface Functionality of Amorphous Silica by Infrared Spectroscopy. R. S. McDonald, J. Phys. Chem., 62, 1168-1178, Oct. 1958.
Surface Reactions on Evaporated Palladium Films. See Abstract No. 45.
Diffusion of Silver in Silver Sulfide.
52 : 30 See Abstract No. 102.
52
197. The Molecular Composition of Sodium Iodide Vapor from Molecular Weight Measurements. United States. A technique has been developed for the determination Of the molecular weight of vapors at high temperatures, by measurement of the pressure at constant vapor density, the pressure measuring device being a molten gold manometer. For the dissociation of Na212 into NaI measurements from 1175 to 1350°K indicate a AE ° of 40.2 kcal. mole -z and a AS ° o f 27.0 e.u. at 1260°K. (Author) S. Datz and W. T. Smith, Jr., J. Phys. Chem., 63, 938-940, June 1959.
Heterogeneous
52 : 30 See
Reaction Studies by Infrared Absorption.
Abstract No. 103. 52 : 30
Physical Techniques in the Study of Silver Catalysts for Ethylene Oxidation. See Abstract No. 104. 52 : 30
Calculation of the Performance of a High-Vacuum Thermionie Energy Converter. See Abstract No. 106. 52 : 30
52
198. Ion-Molecule Reactions of 1, 3-Butadiene, of Acetylene and of Acetylene-Methane Mixtures. United States. The reactions with molecules of positive ions
Selective Delineation of Screw Dislocations by Cathodic Sputtering. See Abstract No. 107. 52 : 43 See Abstract
formed in the electron bombardment of 1, 3-butadiene, of acetylene and of acetylene-methane mixtures in the ionization chamber of the mass spectrometer have been investigated. Appearance potentials of the more important primary ions of 1, 3-butadiene have been measured as well as the appearance potentials of all secondary ions. The heats and cross-sections of ion-molecule reactions have been calculated. (Author)
Irradiation of Polyethylene. IV. Oxidation Effects.
R. Barker, W. H. Hamill, and R. R. Williams, Jr., J. Phys. Chem., 63, 825-828, June 1959.
202. Magnetic Ceramics. VI. Evaluation of Some Methods of Nickel Ferrite Formation.
52
199. Interaction of Oxygen with Titanium Dioxide. United States. Reversible oxygen adsorption has been measured on commercial grade titanium dioxide powder at 500, 700 and 900 ° as a function of the ambient pressure by a weighing technique. No oxygen adsorption is detectable in highly purified TiO2 in the same temperature range. Mass losses have been recorded in a dynamic high vacuum as a function of temperature for highly purified TiO~ " bulk " and also for purified TiO~
No. 180.
53.
Metallurgy,
Ceramics and Inorganic Chemistry 53
The extent of nickel ferrite formation, as affected by four preparatory techniques, was investigated by determining the magnetic moment of the reacted powder with a vibrating-coil magnetometer. The oxide, carbonate, hydroxide, and oxalate methods were used. At low temperatures the hydroxide and oxalate techniques were found to give the greatest yield of ferrospinel. The hydroxide method yielded a magnetic material by precipitation. Weight-loss measurements were correlated to the magnetic data. (Author) George Economos, J. Amer. Ceram. Soe., 42, 628-632, Dec. 1959.