Materials Literature
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The vapour phase oxidation of se to SeO2 which is an intermediate step in the production of high-purity se was studied in a flow reactor as a function of O2/Se mole ratio, and temperature. Sodium dichromate on alumina and activated alumina were used as reactor packings with high-purity and crude selenium. Experiments…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolution-crystal equilibrium for pyridine-water systemAlan L. Myers and Alfred J. GlessnerCite this: J. Chem. Eng. Data 1971, 16, 2, 181–184Publication Date (Print):April 1, 1971Publication History Published online1 May 2002Published inissue 1 April 1971https://pubs.acs.org/…
(1971). SHOCK INITIATED OXIDATION OF FORMALDEHYDE. Combustion Science and Technology: Vol. 3, No. 1, pp. 47-49.
Abstract The kinetics of dissolution of five fractions of commercial poly(vinyl chloride) in cyclohexanone was studied at temperatures from 20 to 70°C. Good agreement was observed between the experimental results and equations expressing the dependence of the induction periods and the rates of dissolution on temperatu…
RODNEY GRAHAME, PETER BEIGHTON; THE PHYSICAL PROPERTIES OF SKIN IN CUTIS LAXA, British Journal of Dermatology, Volume 84, Issue 4, 1 April 1971, Pages 326–
"Frictionizing" textile fibers by corona treatment produces larger effects than conventional chemical methods. A marked increase in wool fiber friction occurs, both with and against the scales. For wool, the increase in with-scale fric tion decays slowly with time after treatment; against-scale friction does not. Init…
A description is given of a molecular beam apparatus which extends high resolution absorption spectroscopy into the shorter millimeter wavelength region (up to 500 GHz). A parallel-plate-type absorption cell, allowing for Stark modulation, is used with the molecular beam passing between the plates. The half-width of t…
A perturbed ligand molecular orbital (PLMO) method is presented for the calculation of magnetic ion properties in diamagnetic cubic lattices at a site having trigonal (C3i) symmetry. Expressions for the anisotropic orbital reduction factors k‖ and k⊥ and spin–orbit coupling constants ζ‖ and ζ⊥ are derived in terms of…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetic studies of permanganate oxidation reactions. III. Reaction with tris(1,10-phenanthroline)iron(II)John R. Sutter and Kenneth W. HicksCite this: J. Phys. Chem. 1971, 75, 8, 1107–1113Publication Date (Print):April 1, 1971Publication History Published online1 May 2002Pub…
Abstract : Selected values of the thermodynamic properties of copper and thirty-one of its binary alloys are presented. Selections have been made by testing experimental data for self-consistency, consistency with known thermodynamic relationships, with the phase diagram, and with other measurements on the same system…
Abstract Low temperature heat capacities from 1.5 to 15 K have been measured for a number of transition metal borides with the compositions Me 2 B, MeB and MeB 2 , and their solid solutions. The measurements show that the borides are characterized by a narrow d-band with a relatively large density of electron states.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStudies of surface reactions of nitric oxide by isotope labeling. II. Deuterium kinetic isotope effect in the ammonia-nitric oxide reaction on a supported platinum catalystKlaus Otto, Mordecai Shelef, and Joseph T. KummerCite this: J. Phys. Chem. 1971, 75, 7, 875–879Publicat…
Abstract A study was made of polyimides based on pyrazinetetracarboxylic dianhydride (PTDA) plus heterocyclic diamines different from the one previously reported by Hirsch. It was postulated that thermal properties might be improved if the diamine portion did not contain the N–N linkage. The results indicate that thes…
Using the atom-beam recoil technique, absolute total cross sections were measured for the scattering of electrons in the energy range 0.3-9 eV by potassium, rubidium, and cesium. The results of these measurements are in substantial disagreement with the experimental values of Brode, obtained more than 40 years ago. On…
Copper single crystals orientated for single glide were deformed in tension at 78°K and irradiated before load-removal with fast neutrons at 4°K or 20°K. The dislocation arrangement which was thus stabilized in the stress-applied state was investigated extensively by transmission electron microscopy and compared with…
Raman spectra of the rutile and high-pressure orthorhombic (TiO2 II) phases of titanium dioxide have been studied at pressures as high as 40 kbar. The frequency of the B1g mode of rutile has an unusual negative pressure dependence, dυ / dp = − 0.3 ± 0.1 cm−1·kbar−1. Onset of the rutile:TiO2 II transition is observed a…
An experimental and analytical investigation of the kinetics of formation of NO in shock-induced combustion of hydrogen-oxygen-nitrogen mixtures has been carried out. In the experimental study, concentration lime-histories of NO, OH and H20 were measured during reaction using spectroscopic techniques. Experimental con…
Five homologous series (methyl to n-decyl) of n-alkyl 4-p-substituted-benzylideneaminocinnamates with p-substituents = CN2, NO2, MeO2 MeCO.O and Ph have been prepared and the liquid crystalline properties established. The relative thermal stabilities of the mesophases of the esters with different p-substituents are in…
The design and construction of a double focusing uniform field magnetic electron spectrometer are described. The pole pieces of the magnet are curved in an effort to correct all median plane aberrations and thereby increase the collecting power. The spectrometer has been installed on a scanning microscope which uses a…
ATTACKING aircraft in the first world war used to fly in low, drop their bombs by hand over the cockpit side and be considered unlucky if a rifle bullet came anywhere near them.