mass transfer coefficient

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
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A gas stream, containing 0.10 mol% carbon monoxide (CO), 2% O2 and 97.9% CO2, flows along a flat catalytic surface, 0.10 m in length, at a free current velocity of 20 m/s to 1.0 atm and 600 K. At this temperature, the catalytic surface promotes the oxidation reaction CO(g) + 1/2 O2(g) → CO2(g). Consider A = CO, B = O2, C = CO2. The gas phase diffusion coefficients at 1.0 atm and 300 K are DAB = 0.213 cm2/s, DAC = 0.155 cm2/s, DBC = 0.166 cm2/s and kinematic viscosities vA = 0.158 cm2/s, vB = 0.159 cm2 /s and vC = 0.0832 cm2/s.


For CO mass transfer, what is the mean mass transfer coefficient (kc) along the 0.10 m length of the catalytic surface and the local mass transfer coefficient (kc,x) at the end of the catalytic surface (x = L = 0.10 m)?

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