RESEARCH RESULTS e
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Ms. No..
Cross-linking of Tenon 100 FEk-Fluorocarbon Resin by Radiation
investigating pulsed column design variabies and operating characteristics.
G . H . Bowers and E. R. Louejoy, E. I. du Pont de Nemoursand Go., Inc.
Ms. 6 2 - 4 9
Effect of radiation dose a t elevated temperatures on tensile, aging, toughness, and electrical properties. Large doses crosslink the polymer in form of wire insulation, and resistance to high temperature cut-through is greatly improved. Small doses alter meit flow characteristics, and effects of this chatigc o n dependence of shear rate on shear stress are discussed.
IMS. 6 2 - 2 1
16pages, including 2jigures, 8 tables
$2.00
Total Flow Rates in an Isotope Separation System
Price
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Total Remittance (check, money order, cash) (Payable to American Chemical Society)
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Sent to: Research Results Service, I&EC
1155 Sixteenth Street, N.W. Washington 6, D. C.
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3 9 p a g e s , including Q j g u r e s , 9 tables
$4.00
The Solvation, Ionic, and Electrophoretic Properties of Colloidal Asphaltenes in Petroleum
I . A . Eldib, Esso Research and Engineering Co. Colloidal asphaltenes in oil are mostly stabiliicd by solvation, rather than by electrical charge, ionize only in very polar solvents, and then poorly. Size of asphaltenes determines whether they migrate or deposit. Thermal treatment makes for greater electrical conductance.
Alexander Afielblat and Gideon Pery, Israel Atomic Energy Commission
M s . 62-50
Simple general calculation of cascade systems under equilibrium conditions. Does not involve calculation of paramcters at intermediate stages. Depends on cut numbers and number of stages ofsystem only.
The Effect of Yield Stress on the Power l a w Constants of Fluid Food Materials Determined in l o w Shear Rate Viscometers
M s . 62-33
Shear stress-shear rate constants of several food materials determined employing single cylinder viscometer. Values compared with and without yirld stress consideration.
IOpages, including 7 j g u r e
$1.00
Decrease in Activity of Nickel Catalysts During Storage Under liquids, with Special Reference to Raney-Nickel
P. M a r s , T h . v.d. M o n d , and J . J . F. Scholten, Staatsmijnen i n Limburg, T h e Netherlands Storage experiments show Raney nickel more stable under water or alcohol than in hydrocarbons, due to reaction of residual aluminum in catalyst with dispersion liquid. Hydrogen generated prevents poisoning by oxygen. Good stability during storage requires rather thick catalyst layer.
M s . 62-41
10 pages, including 1jigicrc
$1.00
Saline Water Conversion by Phenol Addition
2 6 pages, including 5Jgures, 0 tables
MS.62-57
7 4 pages, including 2 fabler, I f i g u r e
$2.00
Techniques for the Development of a Mathematical Model of o Solvent Extraction System
Arorman P. W i l b u r n and Richard D . Dierks, Hanford Laboratories, General Electric Go. Describes test facility, instrumentation (including continuous chemical analyzers), and techniques. Data include such variables as stream composition, flow rates, number of transfer units, and other process parameters. 78 pages, including 5 j g u r e s
32 00
The Thermal Dissociation of Blocked Diisocyanates
Laboratory data amassed on most qualitative specifications for workable plant can serve as basis for preliminary design. Favorable points include: low-energy requirement, operation a t room temperature, and avoidance of scaling and corrosion.
Ms. 62-45
$2.00
S. E. Charm, Massachusetts Institute of Technology
IMS. 62-52
Allen F. Rezd and Albert H. H a l f f , Uniuersity of Dallas, Albert H . Halff Associates, and Ha@' and Reid
20 pages, including gjigures, 5 tables
$3.00
George R. Grz$n and Lawrence J . Willwerth, Auco Gorp. The dissociation temperature of seiected toluene diisocyanate adducts as measured by infrared analysis and by chemical reaction is related to structure and chemical environment.
Ms. 62-53
7 5 pages, including 1 jigure, 3 tables
$2.00
Mutual Separation of Ygl and PrnId7by Countercurrent Solvent Extraction in a Pulse Column
M. A . M a n d i l , G . W. Mason, and D . F. Peppaid, Argonne
National Laboratory Successful separation with better than 97% product purity and recoveries greater than 99%. Approach to steady state much slower than predicted for system of discrete stages under same conditions. Study proves tracer-level work appropriate for
78
INDUSTRIAL A N D ENGINEERING CHEMISTRY
Thermal Studies of Nickel, Cobalt, Iron, and Copper Oxides ond Nitrafes
W. M . Keely and Harry W . Maynor, Chemetron Gorp. A thermogravimetric study of nitrates and oxides in air from 20' to 1040' C., a t a programming rate of 5' to 6' per minute. Extended runs a t lower temperatures also. A differential
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Sensitive eye tissue can be destroyed in moments. Contamination from industrial caustics and chemicals requires instant first aid , , , and a HAWS Emergency Eye-Wash Fountain can mean the difference between temporary irritation and permanent injury! Write for your free HAWS catalog.
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Circle No. 6 on Readers' Service Card VOL. 5 4
NO. 5 M A Y 1 9 6 2
79
I
MIXING PROPELLERS 3"
t h r u 72"
RESEARCH RESULTS
Diameters
michigan I N D U S T R I A L PROPELLERS, like all Michigan propellers, are manufactured by the exclusive Machined-Pitch Process, T h e guaranteed absolute accuracy of these propellers makes them a "must" for agitating, mixing or pumping, especially when long shaft mounts are necessary. The incornparaDly accurate balance a n d blade i n d e x i n g eliminate vibration and shaft "whip" t o greatly prolong the life of your apparatus. Stainless Steel, Bronze, Aluminum, or almost any alloy you desireisavailablein awidevariety of propeller types. The superior quality of M i c h i g a n I n d u s t r i a l
thermal analysis study of crystalline nickel oxide reduction. X-ray diffraction studies correlated with TGA and DTA results.
M s . 62-54
16 pages, including 4Jigures, 5 tables
82.00
Bubble Dynamics at the Surface of a n Exponentially Heated Plate
S. G. B a n k o f , Northwestern University and Space
Technology Laboratories Explores the consequences of a hypothesis stating that a t every instant the latent heat increase of a bubble growing a t a heated surface is equal to superheat energy of liquid displaced. Effect of plate thickness is also discussed.
M s . 62-56
8 pages
$1.00
A Mixing Model for Transfer Near a Boundary
J . M . Marchello and H. L. Toor, Carnegie Institute of Technology A penetration-type model is developed to represent the transfer of heat, mass, and momentum near a fluid boundary. The model predictions appear to be consistent with the limited experimental information concerning transfer near a fluidsolid boundary.
M s . 62-58
14 pages, including 3 figures
$2.00
Sorption Studies Using Automation and Computation
J . L. Lundberg, M . B. TVilk, and M . J . Huyctt, Bell Telephone Laboratories, Znc.
.G R A N D
R A P I D S 2, M I C H I G A N , U . S . A .
1-61:
Circle NO. 513 on Readers' Service Card
Joint estimation of diffusion coefficients and solubilities of gaspolymer systems from a simple sorption experiment. Data processed by high speed electronic computer.
M s . 62-67
40 pages, including 8figures, 4 tables
Barium Fluozirconate Precipitation-An Uranium-Zirconium Alloy Fuels
54.00
Improved Process for
B. E. Paige, B. J . N e w b y , and K . L. Rohde, Phillips Petroleum Go. Process chemistry for a hydrofluoric acid-zirconium fluoride system established. Conditions for precipitation, the degree of zirconium removal, uranium losses, and corrosion data are reported. Fission-product distribution data needed for process and equipment design obtained.
Ms. 62-62
l Q p a g e s , including Z f g u r e s , 5 tables
52.00
Theoretical Investigation of Agitated ion Exchange Beds
J . M . Marchello and M . M7. Davis, Jr., E. I . du Pont de A7emours €d Go., Inc. For m o r e efficient p e r f o r m a n c e in s u c h o p e r a t i o n s as t h e introduction of liquids in processing o r t h e r e m o v a l of m e x h a u s t s y s t e m s , p r o p e r selection of s p r a y ffers great opportunity. For p r o p e r selection h a v e a n a m p l e choice of t y p e s , c a p a c i t i e s , s p r a y p a t t e r n s a n d materials. This S p r a y i n g w i t h a choice S y s t e m s g i v e s you , of o v e r 12,000 s t a n d a r d nozzles to m e e t every n e e d .
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For complete information
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SPRAYING SYSTEMS CO. 3255 Randolph Street
Bellwood, Illinois
Principle of an over-all mass transfer coefficient used successfully in analysis of single- and multiple-stage data. Basic relationships applied to data for absorption of dilute solutions of thorium nitrate anions from concentrated nitric acid with Dowex 1-X4 resin. Loss curves for agitated ion exchange beds can be predicted from small-scale laboratory experiments.
Ms. 62-63
2 4 p a g e s , including 3 tables, 7Jigures
83.00
Derivative Compressibility Factors
Robert C. Reid and Jon R. Vaibert, Massachusetts Institute of Technology Two new generalized compressibility functions defined and evaluated in terms of Pitzer's acentric factor for various reduced conditions. New factors allow rapid estimation of thermodynamic properties which involve partial derivatives of volume with either temperature or pressure.
MS. 62-64 Circle No. 28
80
on
Readers' Service Card
INDUSTRIAL AND ENGINEERING C H E M I S T R Y
7Q pages, including Z f g u r c s , 5 tables
82.00
