Showing papers in "Journal of Chemical & Engineering Data in 1974"

Fluorescence spectra and quantum yields. Quinine, uranine, 9,10-diphenylanthracene, and 9,10-bis(phenylethynyl)anthracenes

Abstract: : Spectra and quantum yields obtained on a corrected spectrum Turner Spectrofluorometer are carefully tabulated for quinine, uranine, 9,10-diphenylanthracene, and 9,10-bis(phenylethynyl) anthracenes. Our quinine sulfate spectrum is compared to a literature spectrum using a simple ratio method which is suggested as generally useful. Some effects of substitution on the anthracene rings of 9,10-bis(phenylethynyl) anthracene are shown. (Modified author abstract)

Low-temperature vapor-liquid equilibriums of nitrogen-methane system

Abstract: The experimental data for the nitrogen-ethane system at -110/sup 0/, -150/sup 0/, -190/sup 0/, and -210/sup 0/F over the entire concentration range are reported to provide accurate vapor-liquid equilibrium data necessary for nitrogen removal from natural gas by distillation and for the design of LNG liquefaction cycles. Considerable experimental problems occurred at low ethane concentrations (less than 0.001 mole fraction) at the lowest temperature; these will be considered in the design and construction of a new equilibrium apparatus. A comparison with 3 previous investigations of this system showed that the data are consistent with those of B.E. Eakin et al. at the 2 higher temperatures (Eakin's results were more scattered at the lower temperatures). The data of S.-D. Chang and B.C.-Y. Lu did not extrapolate to the ethane vapor pressure data of G.F. Carruth and R. Kobayashi. The data of P. Yu. et al. fell at lower temperatures than the reported results.

Vapor-pressure relations for 15 hydrocarbons

Abstract: Experimental values of vapor pressure for 15 hydrocarbons are measured in the low-pressure range 0.1 to 25 mm Hg by means of the inclined-piston deadweight gage and in the range 71 to 2,025 mm Hg by means of comparative ebulliometers. Correlations of the present results with selected literature values are given in terms of Cox equations.

Adsorption of hydrocarbons on carbon molecular sieve

Abstract: Tokyo Metropolitan University's Dept. of Industrial Chemistry gravimetrically measured the adsorption equilibria of methane, ethane, ethylene, propane, propylene, n-butane,, n-pentane, benzene, and cyclohexane on commercially available carbon molecular sieves at the temperature range of 5.4/sup 0/-50/sup 0/C and pressures up to 1 atm. The experiment, part of a continuing study of the adsorption of gases and vapor on microporous solids, reports that the isotherms for the pure gases are of the Type I shape according to the classification of S. Brunnauer et al., which is usually observed in adsorption on microporous adsorbents where the adsorption does not proceed beyond a monomolecular layer. For the methane system, where the temperatures are above the critical level, the adsorption does not reach saturation at pressures below 650 mm Hg. For the ethylene and ethane systems, where the temperatures at both below and above the critical, the shape of the isotherm is also similar to Type I. A comparison of the ethane data at 0/sup 0/C and 30/sup 0/C with those of K. Kawazoe et al. demonstrated the molecular sieving effect. This effect is also obvious for cyclohexane with an adsorbed amount of /sup 1///sub 15/ the benzene adsorption at 30/sup 0/C.

Diffusion coefficients in binary liquid n-alkane systems

Abstract: (15) Prausnitz, J . M. , "Molecular Thermodynamics of Fluid-Phase Equilibria," Prentice-Hall, Englewood Cliffs, N.J., 1969. (16) Puri, A. K. , MASc thesis, University of Waterloo, Waterloo, Ont., 11) Anton Paar. K. G.. "Diaital Precision Densitv Meter." A-8054. Graz. Austria (2) Battino, R , J Phys Chem 72, 4503 (1968) (3) Beers, Y 'Introduction to the Theory of Error, ' Addison-Wesley, Reading, Mass., 1953. (4) Cullinan. H. T., Ind. Eng. Chem. Fundam.. 5, 281 (1966) ( 5 ) Dewan, R . K., von Holde, K. E., J . Chem. Phys.. 39, 1820 (1963) 16) Dullien, F . A. L. , PhD thesis. University of British Columbia, Vancouver, B.C., Canada, 1960. (7) Dullien, F A. L , Shemilt. L. W , Trans. Faraday Soc.. 58, 244 119621 (8) Gordon, A. R. , Ann. N.Y. Acad. Sci.. 46, 285 (1945). (9) Jain, D. V. S., Lark. B. S., Chamak, S. S., Partap, C., Ind. J .

Optical constants for sulfuric and nitric acids

Abstract: within 5% of our values. An average heat of solution of 2320 cal/g-mol is determined from the slope of the correlation equation. That the correlation coefficient is 50 close to unity demonstrates that no appreciable deviation from a constant heat of solution exists over the 12-20M range of nitric acid concentrations. The log of the solubility of HI308 varied linearly with the nitric acid molarity, showing no apparent perturbation at the azeotrope of " 0 3 and water. Molecular iodine was not present in the solutions except at 100°C where trace quantities (up to 33 ppm) were detected.

Phase-equilibriums behavior of systems carbon dioxide-2-methylnaphthalene and carbon dioxide-n-decane-2-methylnaphthalene

Abstract: The ability of CO/sub 2/ to induce partial miscibility in hydrocarbons suggests separation processes with liquid CO/sub 2/ as a selective solvent. Its potential utility in this respect is attractive because of its availability and other desirable properties like low toxicity and noncorrosiveness. The phase-equilibria behavior of the binary system CO/sub 2/-2-methylnaphthalene was studied for liquid-vapor, solid-liquid-vapor, and liquid-liquid-vapor systems. The liquid-liquid-vapor equilibria of the ternary system CO/sub 2/-2-methylnaphthalene-n-decane were studied in detail. (17 refs.)

Chemical reduction of 2,4,6-trinitrotoluene. Initial products

Abstract: ( 1 ) Arbuzov, A,, Abramov, V.. Izvest. Akad. Nauk. SSSR. Otdel. Khim. Nauk.. 1959, p 35; CA. 53, 15956 (1959). 12) Boros. F.. Coskran. K.. Kino. R.. Verkade. J.. J . Amer. Chem Soc.. 88, 1140 (1966). (3) Coelln. R., Schrader, G.. Brit. Patent 917,085 (Jan. 30, 1963); CA. 59, 5197 (1963). (4) Green, M. . J Chem. SOC . 1963, p 1324 (5) Henze, H.. Duff, V., Matthews, Jr., W , Melton, J.. Forrnan, E., J. Amer. Chem SOC.. 64, 1222 (1942). (6) Kosolapoff. "Organophosphorus Compounds," p 184, Wiiey, New York. N.Y., 1950. (7) Kwiatek, J.. Copenhaver, J , U.S. Patent 2,882,313 (Aprii 14, 1959); CA. 53, 16965 (1959). (8) Malowan. J., Martin, D . . Pizzolato. P.. Inorg. S y n . . I V , 63 (1953). (9) Mark, V. , Dungan. C., Crutchfield. M., Van Wazer. J . , in "Topics in Phosphorus Chemistry," M. Grayson and E. Griffith, Eds., Vol 5 , pp 359-60, interscience, New York. N.Y., 1967. (10) Mark, V. , Dungan. C . , ibfd.. p 367. (1 1 ) Mark V. . Dungan. C. , /bid.. p 372. (12) Mark, V. , Dungan, C., ibid.. p 227. (13) Marlin. D., Pizzolato, P., J . Amer. Chem. Soc.. 72 , 4584 (1950). (14) Muller. E.. Ed., "Methoden der Organischen Chemie," Voi 12 ( l ) , p 388, G. Thieme. Stuttgart. Germany, 1963. (15) Mulier, E.. Ed.. ibid.. p 553. (16) Muller, E., Ed., ibid.. p 583. (17) Muller. E., Ed., ibid.. p 433. (18) Muller, E . , Ed., ;bid, p 560. (19) Nixon, J . , Schmutzler, R . . Spectrochim. Acta. 22, 565 (1966). (20) Pelchowicz. Z., J. Chem. SOC.. 1961, p 238. 121) Silverstein. R. . Bassler. G.. "SDectrometric Identification of Oroanic I~ I

Calorimetric investigation of salt-amide interactions in aqueous solution

Abstract: (1) Cheung, H.. Zander, E. H. , Chem. Eng. Progr.. Symp. Ser.. 64 ( 8 8 ) , 34 (1968). Francis, A. W., J. Arner. Chem. SOC., 58, 1099 (1954). Gupta, V. S., PhD thesis, The Pennsylvania State University, University Park, Pa., 1969. Huie, N. C.. PhD thesis, University of Notre Dame, Notre Dame, Ind., 1972. Huie, N. C.. Luks, K. D.. Kohn, J. P., J. Chem. Eng . Data, 18, 311 (1973). Jensen, R. H., Kurata, FLAiChEJ., 17, 357 (1971). Kulkarni. A. A . , Zarah, B. Y . , Luks, K. D., Kohn, J. P., J. Chem. Eng. Data, 19, 92 (1974). Kulkarni, A. A.. PhD thesis, University of Notre Dame, Notre Dame, Ind., 1974. Newitt, D. M.. Pai, M. U.. Kuloor, N. R., Huggill, J. A . W., "Thermodynamic Functions of Gases," pp 102-34, F. Din, Ed.. Butterworths, London, England, 1961. Reamer, H. H., Olds, R. H., Sage, B. H., Lacey, W. N., ind. Eng. Chem., 36, 88 (1944). Reamer, H. H., Olds, R. H., Sage, B. H. , Lacey, W. N., ibid.. 37,