Methane diffuses from a gas phase onto a catalytic surface where it undergoes the following reaction CH4 (g) → C(s) + 2 H₂ (g) Carbon is deposited on the catalytic surface and continuously brushed off, while hydrogen diffuses back into the gas phase. Across a thin film 5 mm in thickness concentration of methane inside the gas phase drops from 1 mole / m³ to 0.1 mol/m³ at the catalyst surface. The process is steady state. The temperature is 250 °C and pressure is 350 mm Hg abs. Under these conditions diffusivity of methane in hydrogen is 0.5 x 10-4 m²/s. Determine rate of decomposition of methane in mg per cm² of the catalyst surface in 24 hours.
Methane diffuses from a gas phase onto a catalytic surface where it undergoes the following reaction CH4 (g) → C(s) + 2 H₂ (g) Carbon is deposited on the catalytic surface and continuously brushed off, while hydrogen diffuses back into the gas phase. Across a thin film 5 mm in thickness concentration of methane inside the gas phase drops from 1 mole / m³ to 0.1 mol/m³ at the catalyst surface. The process is steady state. The temperature is 250 °C and pressure is 350 mm Hg abs. Under these conditions diffusivity of methane in hydrogen is 0.5 x 10-4 m²/s. Determine rate of decomposition of methane in mg per cm² of the catalyst surface in 24 hours.
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
Related questions
Question
Transcribed Image Text:Methane diffuses from a gas phase onto a catalytic surface where it undergoes the following
reaction
CH4 (g) › C(s) + 2 H₂ (g)
Carbon is deposited on the catalytic surface and continuously brushed off, while hydrogen
diffuses back into the gas phase. Across a thin film 5 mm in thickness concentration of methane
inside the gas phase drops from 1 mole / m³ to 0.1 mol/m³ at the catalyst surface. The process is
steady state. The temperature is 250 °C and pressure is 350 mm Hg abs. Under these conditions
diffusivity of methane in hydrogen is 0.5 x 104 m²/s. Determine rate of decomposition of
methane in mg per cm² of the catalyst surface in 24 hours.
Please show the derivations in detail.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 3 steps with 3 images
Recommended textbooks for you
Introduction to Chemical Engineering Thermodynami…
Chemical Engineering
ISBN:
9781259696527
Author:
J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:
McGraw-Hill Education
Elementary Principles of Chemical Processes, Bind…
Chemical Engineering
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
Elements of Chemical Reaction Engineering (5th Ed…
Chemical Engineering
ISBN:
9780133887518
Author:
H. Scott Fogler
Publisher:
Prentice Hall
Introduction to Chemical Engineering Thermodynami…
Chemical Engineering
ISBN:
9781259696527
Author:
J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:
McGraw-Hill Education
Elementary Principles of Chemical Processes, Bind…
Chemical Engineering
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
Elements of Chemical Reaction Engineering (5th Ed…
Chemical Engineering
ISBN:
9780133887518
Author:
H. Scott Fogler
Publisher:
Prentice Hall
Industrial Plastics: Theory and Applications
Chemical Engineering
ISBN:
9781285061238
Author:
Lokensgard, Erik
Publisher:
Delmar Cengage Learning
Unit Operations of Chemical Engineering
Chemical Engineering
ISBN:
9780072848236
Author:
Warren McCabe, Julian C. Smith, Peter Harriott
Publisher:
McGraw-Hill Companies, The