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P10-16B The dehydrogenation of methylcyclohexane (M) to produce toluene (T) was carried out over a 0.3% Pt/ catalyst in a differential catalytic reactor. The reaction is carried out in the presence of hydrogen (H2) to avoid coking (J. Phys. Chem., 64, 1559 (1960)). Describe how you would determine the model parameters for each of the following rate laws. a. (1)-rm=kPMP PB kPMPH₂ (3) -rm H₂ kPM (1+KMPM)² KPMPH₂ (2) -M (4)-r 1+KMPM 1+KMPм+K₁₂PH₂ Use the data in Table P10-16B below. b. Which rate law best describes the data? Hint: Neither K₂ or K can take on negative values. C. Where would you place additional data points? d. Suggest a mechanism and rate-limiting step consistent with the rate law you have chosen. TABLE P10-16B DEHYDROGENATION OF METHYLCYCLOHEXANE PH, (atm) PM (atm) mol toluene rT s-kg-cat 1 1 1.2 1.5 1 1.25 0.5 1 1.30 0.5 0.5 1.1 1 0.25 0.92 0.5 0.1 0.64 3 3 1.27 1 4 1.28 3 2 1.25 4 1 1.30 0.5 0.25 0.94 2 0.05 0.41

P10-16B The dehydrogenation of methylcyclohexane (M) to produce toluene (T) was carried out over a 0.3% Pt/ catalyst in a differential catalytic reactor. The reaction is carried out in the presence of hydrogen (H2) to avoid coking (J. Phys. Chem., 64, 1559 (1960)). Describe how you would determine the model parameters for each of the following rate laws. a. (1)-rm=kPMP PB kPMPH₂ (3) -rm H₂ kPM (1+KMPM)² KPMPH₂ (2) -M (4)-r 1+KMPM 1+KMPм+K₁₂PH₂ Use the data in Table P10-16B below. b. Which rate law best describes the data? Hint: Neither K₂ or K can take on negative values. C. Where would you place additional data points? d. Suggest a mechanism and rate-limiting step consistent with the rate law you have chosen. TABLE P10-16B DEHYDROGENATION OF METHYLCYCLOHEXANE PH, (atm) PM (atm) mol toluene rT s-kg-cat 1 1 1.2 1.5 1 1.25 0.5 1 1.30 0.5 0.5 1.1 1 0.25 0.92 0.5 0.1 0.64 3 3 1.27 1 4 1.28 3 2 1.25 4 1 1.30 0.5 0.25 0.94 2 0.05 0.41

Introduction to Chemical Engineering Thermodynamics
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
Problem 1.1P
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P10-16B The dehydrogenation of methylcyclohexane (M) to produce toluene (T) was carried out over a 0.3% Pt/ catalyst in a differential catalytic reactor. The reaction is carried out in the presence of hydrogen (H2) to avoid coking (J. Phys. Chem., 64, 1559 (1960)). Describe how you would determine the model parameters for each of the following rate laws. a. (1)-rm=kPMP PB kPMPH₂ (3) -rm H₂ kPM (1+KMPM)² KPMPH₂ (2) -M (4)-r 1+KMPM 1+KMPм+K₁₂PH₂ Use the data in Table P10-16B below. b. Which rate law best describes the data? Hint: Neither K₂ or K can take on negative values. C. Where would you place additional data points? d. Suggest a mechanism and rate-limiting step consistent with the rate law you have chosen. TABLE P10-16B DEHYDROGENATION OF METHYLCYCLOHEXANE PH, (atm) PM (atm) mol toluene rT s-kg-cat 1 1 1.2 1.5 1 1.25 0.5 1 1.30 0.5 0.5 1.1 1 0.25 0.92 0.5 0.1 0.64 3 3 1.27 1 4 1.28 3 2 1.25 4 1 1.30 0.5 0.25 0.94 2 0.05 0.41
Transcribed Image Text:P10-16B The dehydrogenation of methylcyclohexane (M) to produce toluene (T) was carried out over a 0.3% Pt/ catalyst in a differential catalytic reactor. The reaction is carried out in the presence of hydrogen (H2) to avoid coking (J. Phys. Chem., 64, 1559 (1960)). Describe how you would determine the model parameters for each of the following rate laws. a. (1)-rm=kPMP PB kPMPH₂ (3) -rm H₂ kPM (1+KMPM)² KPMPH₂ (2) -M (4)-r 1+KMPM 1+KMPм+K₁₂PH₂ Use the data in Table P10-16B below. b. Which rate law best describes the data? Hint: Neither K₂ or K can take on negative values. C. Where would you place additional data points? d. Suggest a mechanism and rate-limiting step consistent with the rate law you have chosen. TABLE P10-16B DEHYDROGENATION OF METHYLCYCLOHEXANE PH, (atm) PM (atm) mol toluene rT s-kg-cat 1 1 1.2 1.5 1 1.25 0.5 1 1.30 0.5 0.5 1.1 1 0.25 0.92 0.5 0.1 0.64 3 3 1.27 1 4 1.28 3 2 1.25 4 1 1.30 0.5 0.25 0.94 2 0.05 0.41
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