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Ion Exclusion Equilibria in the System Sucrose-KCI-WaterDowex-5OW X4 and a General Correlation of Ion Exclusion Data. Separation by batchwise or continuous processing is possible. Equilibrium measurements a t 90' C. show sucrose resin concentration decreases with increased KCI concentration. Water sorbed by resin decreases with increased KCl and sucrose concentration.
Walter M e p r , Richard S. Olsen, and S. L. Kalwani, Oregon State LTniuersity
MS.65-460 23pages ( G j g u r e s , 3 tables)
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Sum of drag force and buoyancy force is equal to oppositely directed gravitational force. Particles move u p and down in the bed to satisfy the force balance and must move in a nearly constant velocity.
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Analysis of the Operation of Porous Gas Electrodes with Two Superimposed Scales of Pore Structure. A model is
developed for porous gas electrodes with superimposed systems of gas filled macropores and liquid filled micropores. I n contrast to earlier single pore size models, calculated performance is characteristic of that obtained with modern fuel cell electrodes.
Edward A . Grens II, L'nibersity of Cali/cornia Subscribers $3.00
M s . 65-485 25pages ( 5 j g u r e s , 7 table)
i170nsubscribers fiG.00
Drag Force on a Sphere in a Multiparticle Suspension.
Y . H. Yu,M'esf Virginia Vniniversify IMS. 65-469 8pages ( J j g u r e s , 2 fables)
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52.00
Hydrogen Sulfide Removal by Takahax liquid PurificaPion Process. 1. Basic Experiments and Pilot Tests. Process
utilizes alkaline solution of sodium 1,4-naphthoquinone-2sulfonate as absorbent. Desulfurization efficiency as high as 99% \yas achieved without difficulty. By-product sulfur is of good quality and free from toxic substances. Basic experiments were conducted with coal gas, thermal cracked oil gas, and catalytic cracked gas.
The Burning Rates of Devolatilized Coal Particles.
Rate falls markedly as burning proceeds. Increasing ash content, carbon burn-off, particle size, and apparent density lowers the rate; increasing gas temperature and oxygen concentration raises it. Two temperature regimes were observed in burning process; transition temperatures for chars from different coals are given.
Michael A . A'ettleion, Surrey, England
Central Electricity
M s . 65-486 18 pages ( 6 j g u r e s , 7 fable)
Research Laboratories, Subscribers 32.00 .Vonsubscribers $4.00
Nobujasu Hasebe, T o k y Gas Compaty, Ltd., Japan M s . 65-473 52 pages ( 7 7Jgures, 10 tables)
Subscribers S6.00 Xonsubscribers $12.00
Application of Haultain lnfrasizer Unit for Subsieve Analysis
OF Fine Ground Rock Phosphate. Modification of simple method overcomes difficulties caused by high percentage of fines. New theoretical interpretation of Stoke's Law has been experimentally confirmed. Results agree with those reported by Price (1962).
Zoi Nirenberg, Chemicals B Phos$/iales Lid., Beersheva, Israel M s . 65-475 gpages ( 3 tables, 2 j g u r e s )
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function of column variables; these results are compared with experimental pulsed column data for various column heights.
Gad L . TVilliams, James R. Hoggan, and L. Douglas Smoot, Brigham Young University MS. 65-500
34pages ( 1 3 j g u r e s , 3 tables)
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$1.00
Uonsubscrabers 52.00
Efficiency Measurements on an All-Glass Wiped Film Still.
Phenomenon of surface backflow in films of water flowing down a slightly inclined plane inro a stagnant reservoir appears to be caused or aided by surfactants generally present in supposedly pure liquids.
Laboratory scale performance was evaluated under various operating conditions. Separations corresponded closely with theoretical values. T h e feasibility of extrapolating data from these stills to commercial size operation is suggested.
SurFace Motion in Flowing liquid Films.
T. H. Gouw and R. E. Jenioft, Chewon Research Company
Andreas Acrivos and Brian R. Kashiwagi, Stanford University
Ms. 65-480 77pages ( 8 j g u r e s ) 72
Relationships among Various Transfer Unit Concepts with Application to Pulsed Extraction Columns. Mathematical relationships of transfer unit concepts have been employed to yield graphical relationships among the different transfer units as a
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INDUSTRIAL A N D ENGINEERING CHEMISTRY
MS. 65-505 35pages (ZOjgures, 2 tables)
SUbscribers 54.00 Nonsubscribers 88.00
R E S E A R C H RESULTS Analysis and Properties of Salting Out of Insulin and Protein Impurities Present in Roman’s Process Presents a method of
analysis using “Sephadex” gel filtration for control of insulin yield together with salting-out curves of insulin and impurities detected by the method. Francisco Borras and Victor Dagnino, Catholic University of Chile Santiago MS. 65-506 Subscribers 82.00 17pages ( 3 & 1 r e s , 2 tables) Nonsubscribers 84.00
A series of narrow molecular weight distribution polybutadienes was used to calibrate several combinations of columns with varying permeabilities. A linear relationship between G P C counts and logarithm of molecular weight was found. Calibration curves were used to convert G P C distribution curves to a molecular weight basis.
Gel Permeation Chromatography of Polybuladiene.
H. E. Adams, Kelly Farhat, and B. L. Johnson, T h e Farestone Tire @ Rubber Combany MS. 66-9
Subscribers $4.00
An explicit postulate regarding the description of the nonequilibrium states of thermodynamic systems in terms of property fields and the local relationships between these properties is offered. Properties, and thereby states, are classified according to the appropriate measurement operations. M . E. Davenport and D . P. Jordan, Texas Technological College Ms. 65-508 Subscribers 82.00 20 pages Nonsubscribers $4.00
35 pages (8JSgures, 4 tables)
Synthesis of High Viscosity Polyols. T w o methods of obtaining
Ms. 66- 70
A State Postulate for Nonequilibrium States.
high viscosity products were developed. T h e first involved use of minor amounts of diepoxides with ethylene and propylene oxides during poly01 synthesis. In the second a new catalyst, sodium monoxide, was used. A combination of the two methods was especially advantageous. H. F. Lederle and J . E. Mastroianni, Olin Mathieson Chemical Corporation MS. 65-517 Subscrabers $2.00 78pages (Sjigures, 4 tables) Nonsubscribers $4.00
A discussion of fundamental phenomena of solubility and diffusion which underlie both the barrier and separation functions of membranes. Study has been directed toward “nonporous” reverse osmosis membranes in contact with aqueous systems containing organic and/or inorganic salts. R. N. Rickles, Dorr-Oliver Incorporated Ms. 66- 1 Subscribers $8.00 79 pages (78Jigures, 3 tables) Nonsubscribers $16.00
Diffusion Transporv of Membranes.
Measurements in a pulverized coal flame indicate that, for particle diameters in the range 0-200 microns, the rate of pyrolysis is independent of particle size, and ignition occurs on the solid surfaces of particles instead of in gaseous pyrolysis products. Jack B . Howard, Massachusetts Institute of Technology, and Robert H. Essenhigh, Pennsylvania State University MS. 66-3 Subscribers $5.00 50 pages (18Ji.pes) Nonsubscribers 810.00 Pyrolysis of Coal Particles in Pulverized Fuel Flames.
The Produclion of the Levopimaric Acid-Formaldehyde Adduct and Hydroxymethylated Materials from Resin Acids and Formaldehyde. iMethods for scaled u p preparation are pre-
sented. All operations except hydrogenation carried out in conventional pilot plant equipment. Materials should find many uses in industrial applications where a high molecular weight, difunctional molecule having rigid structure is desired. B . A. Parkin, Jr., H . B. Summers, R. L. Settine, and G. W. Hedrick, Naval Stores Laboratory, U. S. Department of Agriculture MS. 66-6 Subscribers $3.00 23pages (IJgures, 7 table) Nonsubscribers $6.00
The Application of Time-Displaced Double Correlation Coefficients to the Analysis of Turbulent Fluid Flaw from Streaming Potential Measurements. For turbulent flow of water in
plastic pipes, it was found that those eddies which penetrate to the wall to dominate the generation of the streaming potential fluctuations move with a velocity equivalent to one in the buffer layer between t h e laminar film and turbulent core. Robin G. Moore and Philip E. Bocquet, University of Arkansas Ms. 66-7 Subscribers $3.00 Nonsubscribers 86.00 23 pages ( 5figures)
Nonsubscribers $8.00
A 5-inch sievetray column was operated just below the critical region with the ethyl ether-n-butanol system. Tray efficiencies decreased with increasing throughput and with increasing reduced pressure.
Distillation Performance in the Critical Region.
J . A . Gerster, W. H. Slack, Jr., and S. A. Harrison, University of Delaware Subscribers $5.00 Nonsu bsci-ibers 4 10.00
4 6 p a g e s (5Jfgures, 2 tables)
On Certain Recent Statistical Mechanical Theories of the Thermodynamic and Transport Properties of Molten Salts.
Presents commentary on certain theories of molten salts and discusses a corresponding states theory for pure salts and a conformal solution theory for binary salt mixtures. Examines an extension of scaled particle theory to molten salts, and offers a theory of corresponding states for transport properties.
H . Ted Davis, University of Minnesota
Ms. 6 6 - 1 2
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7 2 p a g e s (dfigures, 6 tables)
Nonsubscribers 416.00
Longitudinal Mixing in Orifice Plate-Gas-liquid
Reacfions.
Mixing and holdup data were obtained in orifice plate-gasliquid reactors for different plate designs and lengths. Correlations of the data, along with that of other investigators, were developed.
K . B. Bischaff and J . B. Phillips, Uniuersity of Texas MS. 66- 7 3
Subscribers 83.00
27pages ( 8 j g u r e s )
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By extending minimax concept to n simultaneously performing experiments, it is found that the uniform search method and the uniform dichotomous search method are particular cases of the more general minimax method corresponding to n being an odd and an even number, respectively. Optimal Simultaneous Search Method.
Y . H. Yu, West Virginia University
Ms. 66-78
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5 pages
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Backmixing Effects in Bhe Backflow Cell Model of nth Order and Bimolecular Isothermal Flow Reactors. Steady state yield characteristics of isothermal and constant density flow
reactors were determined. Comparison of iterative methods for reactant concentration profiles shows Newton-Raphson procedure converging fastest. Design charts presented for imperfectly mixed reactors with irreversible fractional, second order, and bimolecular reactions.
J . T. Baldwin and L. D. Durbin, Texas A €8 M University Ms. 66-20
Subscribers 83.00 Nonsubscribers $6 .00
2 5 pages ( 8 5pre.F) VOL. 5 8
NO. 3 M A R C H 1 9 6 6
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INDEX TO ADVERTISERS IN THIS ISSUE American Chain & Cable Co., Inc.. . . . National Export Advertising Services, Inc.
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COMPOUNDS Here is a timely review of a challenging subject which holds interest for every chemist. Each of the 23 papers in this book was written by invitation and presents a general survey of the problems of nonstoichiometry in a specialized area. They were given before a s mposium sponsored by the &vision of Inorganic Chemistr at the 141st National Meeting o the ACS in March 1962.
Y
A few of the titles are: Nonstoichiometric Metal Oxides; X-Ray and Density Study of Nonstoichiometry in Uranium Oxides; Nonstoichiometry in Fluorite-Type Oxides; Nonstoichiometric Hydrides. Interstitial-Atom, Proton, and Hydride-Anion Models; Solutions of Hydrogen in Palladium; Nonstoichiometry in Chalcogenide Systems; Nonstoichiometr in Some Group I V Tellurides: flectric and Magnetic Properties of the Tungsten and Vanadium Bronzes: Phase Transitions in Sodium Tungsten Bronzes. The information in this volume can lead to further resolutions of the divergence which exists between the essentially structural and essentially thermodynamic ideas. 253 PAGES,
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