Ammonia is being cracked on a solid catalyst. At one point in the reactor where the pressure is 1 bar and the temperature is 300 K, the molar fractions of the gaseous mixture were found to be 0.4 NH3 (component 1), 0.2 N2 (component 2), and 0.4 H2 (component 3). Estimate the effective diffusivity of ammonia in the gaseous mixture making use of the binary diffusivity formula and the data given in Table Q1 (parts 1 & 2).
Ammonia is being cracked on a solid catalyst. At one point in the reactor where the pressure is 1 bar and the temperature is 300 K, the molar fractions of the gaseous mixture were found to be 0.4 NH3 (component 1), 0.2 N2 (component 2), and 0.4 H2 (component 3). Estimate the effective diffusivity of ammonia in the gaseous mixture making use of the binary diffusivity formula and the data given in Table Q1 (parts 1 & 2).
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:Ammonia is being cracked on a solid
catalyst. At one point in the reactor where
the pressure is 1 bar and the temperature is
300 K, the molar fractions of the gaseous
mixture
were found to be 0.4 NH,
(component 1), 0.2 N, (component 2), and
0.4 H2 (component 3). Estimate the
effective diffusivity of ammonia in the
gaseous mixture making use of the binary
diffusivity formula and the data given in
Table Q1 (parts 1 & 2).
- Binary diffusivity formula:
(10*) r15
0.98
3.03-
M.5
0.5
P MA, O AB "D
2
АВ
АВ
where;
= diffusion coefficient, cm?/sec
АВ
MA , MB = molecular weights of A and B,
respectively
T= temperature, K
P = Pressure, bar
= collision diameter, Angstrom
АВ
2 = diffusion collision integral,
dimensionless
Transcribed Image Text:A::A
dimensionless
Given the following:
1
1
= 2
M
1
M
АВ
%3D
0. 5(0, + o,
) ,
.5( o
АВ
0.5
АВ
A
B.
K
K
K
Table Q1 (part 1): Intermolecular forces
parameters
σ. Α
2.900
€/к, К
558.3
M, g/mol
17
NH,
3.798
71.4
28
N2
H2
2.827
59.7
2
القسم
Table Q1 (part 2): Estimation of collision
integral (2)
KT/e
(for viscosity
and thermal
NDAB
(for viscosity
and thermal
KT/eAB conductivity) diffusivity)
KT/e
or
2DAB
or
(for mass
(for mass
KT{eAR conductivity) diffusivity)
0.9755
0.9700
0.9649
0.95
3.90
4.00
4.10
4.20
4.30
4.40
4.50
4.60
0.8888
0.8836
0.8788
0.8740
0.8694
0.8652
0.8610
0.8568
1.629
1.476
1.00
1.587
1.439
1.549
1.514
1.482
1.452
1.424
1.399
1.05
1.406
1.375
1.346
1.320
1.296
1.273
1.253
0.9600
0.9553
0.9507
0.9464
0.9422
1.10
L.15
1.20
1.25
1.30
1.35
1.375
1.353
4.70
0.9382
0.8530
1.233
1.215
1.198
1.182
1.167
0.9343
0.9305
0.9269
0.8963
0.8727
1,40
4.80
0.8492
1.333
1.314
1.296
1.279
1.264
0.8456
0.8422
0.8124
4.90
1.45
1.50
5.0
1.55
1.60
6.0
7.0
0.7896
0.7712
1.65
1.153
8.0
0.8538
1.70
1.248
1.140
9.0
0.8378
0.7556
10.0
20.0
0.8242
0.7432
0 7005
1.75
1.234
1.128
0.7424
1.80
1.221
1.116
0.6640
1 209
LI05
300
06232
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 2 steps with 2 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemical-engineering and related others by exploring similar questions and additional content below.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