The catalytic hydrogenation of alpha-methylstyrene to cumene is studied in a laboratoy trickle-bed reactor operated at low liquid flow rates. Under this condition, wetting is not complete, vaporization of the liquid phase may occur, and reaction could proceed via liquid-solid and gas-solid catalysis
The role of the liquid phase in the performance of a trickle bed reactor
β Scribed by Charles N. Satterfield; Peter F. Way
- Publisher
- American Institute of Chemical Engineers
- Year
- 1972
- Tongue
- English
- Weight
- 833 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0001-1541
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β¦ Synopsis
The effect of the addition of an inert liquid into a gas-phase reaction occurring on a solid catalyst was studied using the isomerization of cyclopropane to propylene on a silica-alumina catalyst as the model reaction and one of three hydrocarbon solvents as the liquid. With a nonodsorbing liquid the intrinsic reaction rate constant is the some in both the gas and the gas-liquid systems but adsorption of impurities from the liquid or adsorption of the liquid itself can have an enormous retarding effect on the reaction rate. Even in the absence of these effects the addition of a liquid phase decreases the percent conversion and increases the likelihood of occurrence of mass transfer limitations.
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