EC in the Works - ACS Publications

A newapproach to the analysis of dispersions in stirred tanks has evolved a statistical method for scale-up of equipment. The method wii! predict par-...
0 downloads 0 Views 94KB Size
x / r d

a

IN T H E WORKS...

Manuscripts Accepted for Publication in Coming Issues of I / E C

_-----__----_----------------

- - - _ _ _ _ _ _ _ _ _ _ _ _ - - - - _ _ _ _ _ I _ _ _

EDTA-(Ethylenadinitrilo)tetraacelic Report

Acid.

A Staff-Industry Collaborative

E. V. Anderson, Associate Editor, in collaboration with J. A. Gaunt Geigy Chemical Corp., McIntosh, Ala.

Geigy's one-step cyanomethylation process for making EDTA may result in wider acceptance of the chemical compound as 2 finished product rather than an intermediate, Potential uses appear to be gaining favor in agriculture, electroplating, mineral separations, and food additives

Permeability to Water of Partially Saturated Glass Fiber Beds J. D. Parker Institute of Paper Chemistry, Appleton, Wis.

Glass fibers provided a geometrically simple medium for an initial study of the permeability of partially saturated fibrous systems t o water. Understanding the mechanism of liquid relative permeability is an important factor i n paper processing

Metal. Catalyzed Oxidation of Polyethylene Harvey Altei Union Carbide Plastics Co., Bound Brook, N. J.

Processing low-Temperature Lignite Tat

A process to use off-grade polyethylene as a raw material for chemical manufacture resulted from the study of the effect of metal salts and oxygen i n understanding and preventing pigment-catalyzed degradation

H. R. Batchelder, R. B. Filbert, and W. H. Mink Battelle Memorial Institute, Columbus, Ohio

Data presented are sufficiently extensive to be used for design of commercial desulfurization plants. Low-sulfur char made this way is useful in many metallurgical applications Catalytic Production of N,N-Dimethylhydrazine Karl Klage:, E. M. Wilson, and G. K. Helmkamp Aerojet General Corp., Azusa, Calif.

Superior fuels for rocket engine studies were made by the reduction of N-nitrosodimethylamine with gaseous hydrogen in the presence of a palladium catalyst

Isomerization of High Molecular Weight n-Paraffins J. W. Gibson, G. M. Good, and George Holzman Shell Development Co., Emeryville, Calif.

The isomerization process can be applied to heavy oil processing. Selective conversion of V I improvers in the presence of dual functional catalysts could lead to better automotive and aviation lubricants

Fibrous Potassium Material

Titanate-A

New

High

Temperature

Insulating

H. C. Gulledge

E. I. du Pont de Nemours & Co., Inc., Wilmington, Del. Felts from titanate fibers are especially suited for high temperature applications such as gaskets, filter medium, plastic reinforcement, electrical, and acoustical insulation

Mechanism of Catalytic Hydrocracking

R. A. Flinn, 0. A. Larson, and H. Beuther Gulf Research and Development Co., Pittsburgh, Pa.

Catalytic hydrocracking yields products rich in isoparaffins. reaction mechanisms involved can improve the yield

A study of the

Sulfite Oxidation i n Gas-liquid Contactsrs Fumitake Yoshida, Akio Ikeda, Shuhei Imakawa, and Yoshiharu Miura Kyoto University, Kyoto, Japan

This article contributes to the understanding of the mechanism of oxygen transfer in agitated vessels. The h i d film around air bubbles is defined as the controlling resistance Synthetic Rubaer Production. The Role of Chelating Agents in Sulfoxylate Polymerization

R. D. Spitz and A. K. Prince The Dow Chemical Co., Midland, Mich.

Concentration and purity of EDTA-based chelating agents can be changed markedly with little adverse effect on conversion rate. Use of a more economical form of EDTA offers a possible avenue of economy to synthetic rubber producers

A Bench-Scale Crystallization Purification Column

Solvent Refining of l o w Temperoture Tar

M. D. Kulik and M. B. Neuworth Consolidated Cool Co., Library, Pa.

More low temperature tar can be separated a t higher molecular weight levels by solvent extraction and refining than is possible by conventional distillation methods

Predicting Particle Size i n Agitated Dispersions

D. L. McKay, G. H. Dale, and J. A. Weedman Phillips Petroleum Co., Bartlesville, Okla.

Reuel Shinnar and James M. Church Columbia University, New York, N. Y.

Fractional crystallization by this method is better than distillation or liquid liquid extraction because the heat of fusion is lower than heat of evaporation and only one theoretical stage is necessary

A new approach to the analysis of dispersions in stirred tanks has evolved a statistical method for scale-up of equipment. The method will predict particle size distribution of droplets for a given dispersion

92

INDUSTRIAL A N D ENGINEERING CHEMISTRY