lec18_04182007_w - 10.37 Chemical and Biological Reaction...

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10.37 Chemical and Biological Reaction Engineering, Spring 2007 Prof. K. Dane Wittrup Lecture 18: External Mass-transfer Resistance This lecture covers: Gas-liquid reactions in multiphase systems fluid reactants products sites rxn intraparticle diffusion external transport adsorption desorption mass transfer coefficient rate law observed rxn rate =f(reactant concentration and product) solid Figure 1. Schematic of surface reaction kinetics. Analogies: noncovalent Langmuir biomolecular adsorption interactions isotherms Michaelis- Langmuir-Hinshelwood Menton Haugen-Watson enzyme kinetics kinetics (Briggs-Haldane, Henri) Logic: list rxns hypothesize rate-limiting step derive rate law check for consistency w/ rate data Single site, unimolecular decomposition S AD AS D k kk k AA SB S CS B C −− ++ + RR R product site on catalyst S Cite as: K. Dane Wittrup, course materials for 10.37 Chemical and Biological Reaction Engineering, Spring 2007. MIT OpenCourseWare (http://ocw.mit.edu), Massachusetts Institute of Technology. Downloaded on [DD Month YYYY].
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This note was uploaded on 11/27/2011 for the course CHEMICAL E 10.302 taught by Professor Clarkcolton during the Fall '04 term at MIT.

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lec18_04182007_w - 10.37 Chemical and Biological Reaction...

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