The chemisorption of H, shown in the figure below occurs when the interatomic distance between 2catalytic centres is in the range 0.248- 0.277 nm.2.PhysisorptionTransition stateChemisorptionSuch condition is obtained with several transition metals in various geometric configurations (BCC, FCC andHCP), as reported in the table below.Lattice typeBody-centered cubie(bec)Face-centered cubicHeagonal close packing(hep)(fee)Ta026Ce0.366Mg0.3200288028803120.2980272AgAuMo0272Cd026002602760274AlTi0,2920.27002660246Osa-fe0248Za02700.268Ru0266BCo 0.252CuaCoBe022402560.252Ni0.248BCC types have the proper interatomic distances; nevertheless they are not active in the H, chemisorption,why?

The most important criteria for chemisorption of H2 on the transition metal surface is presence of…

The chemisorption of H, shown in the figure below occurs when the interatomic distance between 2 lytic centres is in the range 0.248-0.277 nm. Pysnopton Tranation state Cheniopton h condition is obtained with several transition metals in various geometric configurations (BCC, FCC and P), as reported in the table below. Lattice type Body centered cubie Facecentered cubie Heagonal cose parking 026 0272 0272 020 0246 afe 024 Ta Ce Mg 0320 0312 028 Me Au Al Ti 0292 0276 0270 026 0274 Ru BCo 0252 Be 0224 026 aCo 0252 N 0248 C types have the proper interatomic distances; nevertheless they are not active in the H, chemisorption,

The chemisorption of H, shown in the figure below occurs when the interatomic distance between 2 lytic centres is in the range 0.248-0.277 nm. Pysnopton Tranation state Cheniopton h condition is obtained with several transition metals in various geometric configurations (BCC, FCC and P), as reported in the table below. Lattice type Body centered cubie Facecentered cubie Heagonal cose parking 026 0272 0272 020 0246 afe 024 Ta Ce Mg 0320 0312 028 Me Au Al Ti 0292 0276 0270 026 0274 Ru BCo 0252 Be 0224 026 aCo 0252 N 0248 C types have the proper interatomic distances; nevertheless they are not active in the H, chemisorption,

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Actinides

The elements in which the extra electron tends to enter the 5f-orbitals of (n–2)th main shell are considered 5f-block elements. They are also named actinides. Actinides include 15 elements, from atomic number 89 to 103.

Question

The chemisorption of H, shown in the figure below occurs when the interatomic distance between 2
catalytic centres is in the range 0.248- 0.277 nm.
2.
Physisorption
Transition state
Chemisorption
Such condition is obtained with several transition metals in various geometric configurations (BCC, FCC and
HCP), as reported in the table below.
Lattice type
Body-centered cubie
(bec)
Face-centered cubic
Heagonal close packing
(hep)
(fee)
Ta
026
Ce
0.366
Mg
0.320
0288
0288
0312
0.298
0272
Ag
Au
Mo
0272
Cd
0260
026
0276
0274
Al
Ti
0,292
0.270
0266
0246
Os
a-fe
0248
Za
0270
0.268
Ru
0266
BCo 0.252
Cu
aCo
Be
0224
0256
0.252
Ni
0.248
BCC types have the proper interatomic distances; nevertheless they are not active in the H, chemisorption,
why?

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