RESEARCH RESULTS . , . immediately auailable All manuscripts listed here are being considered for possible publication in I&EC and I&EC quarterlies. They are available to I&EC subscribers a t reproduction and handling cost, a t any time prior to publication. Papers withdrawn from consideration will generally remain available for 90 days if authors approve. A Research Results Service manuscript should be treated as a personal communication. Reference to its content in any publication should have the author’s prior approval. Please use the minted c o w o n and include Davment with Your order.
Optimal Reaction Systems with Recycle
Mathematical technique determines optimal operating policy for system involving a tubular chemical reactor, a separator, and a recycle stream. Example shows how to find maximum piofit for an irreversible reaction.
77 pages, including I Jgurc
$2.00
Effect of Flow Passages on Two-Phase Critical Flow
Reports study on discharge rates of saturated Freon-I1 through various apertures and short tubes. Proposes “Critical” Modified Cavitation Number 15 as criterion for determining occurrence of single- or two-phase flow regimes in short tubes. Length-diameter ratio of tube affects discharge flow appreciably. Saturated fluid discharged from aperture exhibits singlephase characteristics. Euler number of orifice only slightly affected by the configuration. 25 pages, including 7 7 j g u r e s
Price
................................ ........
Total Remittance (check, money order, cash) ( P a y a b l e to American Chemical Society) Send to:
Research Results Service, IBEC 1155 Sixteenth Street, N.W. Washington, D. C. 20036
SUBSCRIBER’S NAME, .............................. ADDRESS .........................................
................................................
Major portion of dimer products from oligomerization of 1octene and I-decene identified as head-to-head coupling products, through correlation of physical on hydrogenated products. Product distribution data with product olefin type suggests head-to-head coupling followed by chain transfer as dominant molecular weight controlling factor for all oligomers.
70pages, including l j g u r e , 3 tables
M . J . D . Low, P . L. Bartner, and R. Krishnarnurthy, Rutgers, The State University Mineral vermiculite has some activity as oxidation and dehydration catalysts, but not as catalyst for dehydrogenation, cracking, and isomerization reactions. Raw or converted vermiculite of potential use as catalyst carrier.
M s . 64-267
A Study of Variables
$3.00
Carl Hanson and David A . K a y , Bradford Institute of Technology, Great Britain
A new process for efficient recovery, a t a high degree of purity, of germanium from the various waste streams involved during the manufacture of semiconductors. Incorporates leaching from waste sludge followed by solvent extraction.
114
8 pages, including 2figures
Canonical Analysis of Fitted Equations
Reviews many essential steps in method of Box and coworkers for analyzing response surfaces, describes a useful computer program for the analysis, and discusses a n example where analysis has been carried out for six independent variables.
MS.64-266
1 3 pages, including 2figures
$2.00
On Stress-Relaxing Solids. II. Recoil Phenomena N . N . Kapoor, E. A . Brumm, and A . G. Fredrickson, LJniniversity of Minnesota
Germanium Recovery during Samlconductor Manufacture
M s . 64-257
$7.00
Imrich Klein, Western Electric Company, Inc.
An epoxidized fish oil (anchovy) with 7.8% epoxy content, has been prepared with higher oxirane oxygen content than most commercially available products, although final product had a n iodine value of 14.1. I n situ technique used to study effect of operating variables on maximum oxirane oxygen attainable.
21 pages, including 7 j g u r e s
9 pages, including I fable
$3.00
Jaime IVisniak, Alejandro Cancino, and Juan C. Vega, Catholic University of Chile, Santiago
M s. 64-245
81.00
The Catalylic Properties of Vermiculite
Response Surfaces. Epoxidation of Fish Oils.
Coupling Product from
D. H. Antonsen, R. W . Warren, and R. H. Johnson, Sun Oil Company
M s . 64-259
Tony C. M i n , Auburn University Hans K. Fauske and Michael Petrick, Argonne hTational Laboratory
M S . 64-229
................................
Identification of a Head-to-Head l-Olenn Oligomerization
G. S. G. Baveridge and R. S. Schechfer, University of Texas
A ~ S .64-220
Ms. No.
61.00
Experimental and theoretical study of recoil phenomena in materials previously studied in steady, laminar shear flow. Data on amount and distribution of recoil and a mathematical solution of the problem for an idealized kind of material.
M s . 64-269
35 pages, including 8 f i p r e s
$4.00
Some Nonlinear Viscoelaslic Models with Inclusion of Results from Molecular Theory
Chlorate Etchant Systems for Copper
Thomas TV. Spriggs and R. B y o n Bird, L’niverszty of Wisconsin
B. Miller and T . D . Schlabach, Bell Telephone Laboratories, Inc. A sodium chlorate-based copper etchant featuring capacities to 300 g./L and relatively stable etching rate throughout bath life has been developed with homogeneous bath, servo-controlled acid operation or direct reaction to a nonadherent precipitate of Cug(0H)sCl.
New model gives reasonable description of non-Xewtonian viscosity and normal stresses; provides description of “analogies’’ between material functions describing steady flow behavior and small amplitude oscillatory motions. Published data on complex viscosity, shear viscosity, and normal stresses of 5% solution of polyisobutylene in decalin correlated using only two adjustable parameters.
Ms. 64-258
Ms. 64-277
24 pages, including 6 f g u r c s
$3.00
INDUSTRIAL AND ENGINEERING C H E M I S T R Y
19 pages, including 2 j g u r e s
$2.00
RESEARCH RESULTS Chemical Kinetics in Solution. Reaction of Benzoic Acid with Benzotrichloride in Benzyl Chloride
Gopal Subramanian and H. E. Hoelscher, Johns Hopkins University Reaction products were benzoylchloride and hydrogen chloride. Nitrogen used as carrier gas for mixing and to sweep out hydrogen chloride. Effect of gas flow rate, batch temperature, and initial concentration reported. Order and probable reaction mechanism discussed.
Discussion applies to all organic materials used as sources for free radicals, including azo compounds and organic peroxides. Describes procedures involved in handling and storing peroxides; also safety tests and equipment for tests.
M s . 64-273
73pages, including 4jigures, 3 tables
S. A. Stern, T . F. Sinclair, P. J. Gareis, P. H . Mohr, and N . P. Vahldieck, Union Carbide Corporatton, Linde Division Membranes of Teflon F E P used in process which is markedly superior-from economic standpoint-to any previous helium permeation process. New process described; also novel and inexpensive method for constructing large permeation plants.
M s . 64-275
49pages, including ldfigures, 4 tables
$5.00
Radium Removal from Uranium Mill Effluents wilh Inorganic Ion Exchangers
W. D. Arnold and D . J . Grouse, Oak Ridge National Laboratory Radium was effectively removed from simulated lime-neutralized uranium mill effluents by adsorption on inorganic ion exchangers such as barytes, Decalso, and clinoptiloite. In column tests, adsorption efficiency decreased with increase in exchanger mesh size and with aqueous throughput rate.
M s . 64-276
20pages, including Gfigures, 2 tables
Ms. 64-282
2Opage4 including lfigure, 14 tables
$22.00
$2.00
A New Permeation Process for the Recovery of Helium from Natural Gas
i
Safety Considerations in Industrial Use of Organic Peroxides
J . B. Armitage and H . W. Strauss, E.I. du Pont de Nemours and Company, Inc.
$2.00
Countercurrent Extraction in Salt-Metal Systems Involving Oxidation-Reduction Reactions
P. Chiotti, Zowa State University Flow diagram for separating two solutes such as uranium and thorium, in a KC1-LiC1-zinc system is presented. Mathematical relations and graphical methods for determining number of equilibrium stages required are developed. Presence of precipitate phases in solvent streams must be limited for system to be operative.
M S . 64-285
20 pages, including 4j’igures
82.00
A N e w Method of Measuring Thermal Effects in Catalytic Reactions
F. S.Karn, J. F. Shultz, and R . B. Anderson, Pittsburgh Coal Research Center New catalyst configuration-catalytic material hot-sprayed on a metal cylinder containing a thermocouple well-permits measurement of temperatures approaching those of catalyst surface in hydrogenation of carbon monoxide on iron and nickel catalysts.
M s . 64-290
23pages, including 8Jigures, 1 table
$3.00
Analog Modeling of Adaptive Optimization
Anthony L. Frey, William B. Deem, and Roger J . Altpeter, University of Wisconsin
Readily Curable Chlorinated Poly-a-Olefins and Ethylene-ahOlefln Copolymers
Adaptive control of a gas furnace is modeled using the Heaviside Partial Fraction Expansion Theorem to separate the feedback response into components. A study of these during open- and closed-loop tests provides information on origin of feedback transients of the control system.
H . S. Makowski, W . P . Cain, and P. E. W e i , Essc Research and Engineering Company
M s . 64-277
24 pages, including 7jigures
$3.00
Signiflcanco of Tranrporl Phenomena in Biological Oxidation Processes
M s . 64-295
E. L. S w i l l y , J . 0. Bryant, and A . W . Busch, Rice University
Stability and Uses of Diisopropyl Peroxydlcarbonate
Basic principles of transport phenomena, applied to biological systems, yield valid predictions for physical limitations imposed on such systems. Examples are given in which the over-all reaction rate is controlled or limited by transport of reactants.
M s . 64-278
28 $ages, including 8 fgures
$3.00
Transport of Solutes between liquid Alloys in Mutual Contact with a Fused Salt-Application to Fuel Reprocerring
P. Chiolti and J.S. Klepfer, Zowa State University x
Describes preparation of ethylene-propylene copolymers which are chlorinated in aromatic solvents. Chlorinated copolymers are cured with a variety of formulations to take advantage of lability of chlorine atoms, or unsaturation, or both. Properties of vulcanizates are detailed.
Mg-400/, T h alloy containing yttrium and lanthanide elements decontaminated in simple, single-stage, batch extractor. Impurities selectively oxidized by MgCla in KC1-44.50/, LiCl eutectic salt and simultaneously reduced by Zn-Mg scrub alloy. Method can be applied to many other separation problems by appropriate choice of metal and salt solvents. Simplicity an advantage over complex countercurrent methods.
M s . 64-279
3 9 pages, including Sjigures, 3 tables
$4.00
The Thermal Decomposition and Applications of n-Butyl-4,4bis(ferf-buty1peroxy)valerate
Stanley W. Bukata, Leonard L. Zabrocki, Mary F. McLaughlin, James R. Kolczynskt, and Orville L. Mageli, Lucidol Diuision, Wallace B Tiernan, Inc. Discusses thermal decomposition, in pure state and in n-dodecane, of a new commercially available liquid organic peroxide, and its use as an efficient catalyst for curing ethylene-propylene rubbers. Mechanism for breakdown of peroxide proposed.
M s . 64-280
13 pages, including 1 jigure, 5 tables
$2.00
42pages, including 5fgures, 1 3 tables
85.00
W. A. Strong, Pittsburgh Plate Glass Company Recommended procedures for storing and handling diisopropyl peroxydicarbonate with minimum hazard. Decomposition rates in various solvents have been determined at concentrations suitable for polymerization. Initial step in decomposition is predominantly first order thermal dissociation into isopropyl carbonate radicals.
MS. 64-296
23 pages, including I jigurr
$3.00
A Relative Hazard Clasriflcation of Commercial Organic Peroxides
David C. Noller, Stanley J. Mazurowski, Gilbert F . Linden, Frederak J . G. de Leeuw, and Orville L. Mageli, Lucidol Division, Wallace @ T t c r a n , Inc. Testing procedures and results provide practical assistance on conditions for safe packaging, transportation, storing, and handling. All tests measure potential fire and decomposition hazards. Health hazards not considered.
MS. 64-297
40 pages, including 5 tables
$4.00
A Cast Flexible Ester-Urethane Polymer
Clifford H. Smith, The Bendix Corporation Reviews chemistry involved in preparation of both E-caprolactone polyester and the diisocyanate prepolymer. Describes properties, characteristics, and processing techniques of Ecaprolactonepolyester-para-phenylene diisocyanate casting formulations.
M s . 64-298
75pages, including 2Jgures, 8 tables VOL. 5 6
NO. 9
SEPTEMBER
$2.00
1964
115
