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Digitale Medien

Intraparticle-forced convection effect in catalyst diffusivity measurements and reactor design (1982)

Rodrigues, A. E. ; Ahn, Bum J. ; Zoulalian, André

Hoboken, NJ : Wiley-Blackwell

AIChE Journal 28 (1982), S. 541-546

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Details

ISSN: 0001-1541

Schlagwort(e): Chemistry ; Chemical Engineering

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung

Notizen: Intraparticle forced convection was considered in order to explain experimentally observed changes in effective diffusivity (apparent) with flowrate, when measures are carried out in fixed beds.A complete model taking into account intraparticle diffusion and forced convection together with film diffusion is derived in order to analyze diffusivity measurements by physical methods, both in perfectly mixed reactors and fixed beds.The experiments were carried out with hydrogen tracer in a partial oxydation catalyst.Implications of the use of such “apparent” effective diffusivities in reactor design are discussed, showing that errors of 100% can be made.

Zusätzliches Material: 5 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/aic.690280404

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