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I&EC

V a l v e Tray Pressure Drop

/ . T. Thorngren

PROCESS DESIGN AND DEVELOPMENT

428

VOL. 11, NO. 3, July 1972

Computer Simulation of Plant-Scale Multicolumn A d ­ sorption Processes Under Periodic Countercurrent Operation

IEPDAW 10(2) 321-464 (1972)

J. W. Chen, F. L. Cunningham, and J. A. Buege . . . 430

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G. C. Young and J. II. Weber A l k y l a t i o n of Isobutane w i t h Butènes: Acid Compositions

440 Effect of Sulfuric

L. F. Albright, L. Iloule, A. M. Sumutka, and R. E. Eckert 446

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Effect of Catalyst Particle Size on Selectivity in Butène Dehydrogenation

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454

Transient Absorption of H>S and S 0 2 in an Organic M e d i u m : Effect of Temperature on Formation of Sulfur

I.G. Diah, A. B. Pouter, and L.W.Shemilt

458

CORRESPONDENCE Comparison of M o m e n t s , S-Plane, and Frequency Response Methods for A n a l y z i n g Pulse Testing Data from Flow Systems

W. C. Clements and J. L. Johnson and L.-T. Fan . . . 461 Correction

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