( 2;) , ": z (3) (4) D = D O ( : : I : : ) -(Stokes-Einstein modified) Correspondence concerning this paper should be Sent to A. S Myerson The thermodynamic correction terms in Eqs. 3 and 4 are
Testing the relative importance of mass and heat resistances in solid catalysts
✍ Scribed by Roman Petrus; Mirosław Szukiewicz
- Publisher
- American Institute of Chemical Engineers
- Year
- 2003
- Tongue
- English
- Weight
- 134 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0001-1541
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Criteria for isothermal conditions and/or absence of diffusion resistances in catalytic reaction were derived using approximate profiles of reagents concentration and temperature for the important reaction ν~A~A+ν~B~B→ν~R~R and for a power‐law type of the kinetic equation, which are quite often applied in practice. The method can be easily adapted to another type of kinetic rate equation and/or more complicated reaction schemes. The developed criteria were applied to some data from the literature with good result.
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Calculations have been carried out, using the Quasi-Equilibrium Theory of Mass Spectra to show that a decrease in penetration of the accelerating field into the ion source of a mass spectrometer may significantly increase the number of primary daughter ions [A]+ produced from a molecular ion [MI+ in