Non-isothermal effectiveness factors for crystal growth
β Scribed by J. Garside; N.S. Tavare
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- English
- Weight
- 353 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0009-2509
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
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The effect of heat transfer and the role of the surface integration process in crystal growth are analysed quantitatively in terms of a non-isothermal effectiveness factor, defined as the ratio of actual growth rate to the rate that would be obtained if conditions of the supercooled or supersaturate
The concept of effectiveness factors in relation to crystal growth studies is introduced. Its use allows a quantitative measure of the degree of diffusion or surface integration control to be made. The likely variation of crystal growth rate with relative solution velocity is discussed and with the
Non-isothermal catalyst effectiveness factors are determined for both exothermic and endothermic reactions with rate equations of the form r, = /&,,/(I + K,,CJ'. It is shown that with such rate equations, multiplicities may occur even for endothermic reactions. In addition, multiple states may arise
Non-isothermal catalytic effectiveness for negative order kinetics is studied numerically for various ratios of Bi,/Bi,, equal to and greater than unity. The specific case of carbon monoxide oxidation over supported Pt in a spherical catalyst is investigated for conditions of temperature and concent