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Effects of Metal Promotion on the Adsorptive and Catalytic Properties of Rhodium

 Levin, Marc Eliott

Lawrence Berkeley Laboratory, CA

Part 1, Pages 1 - 137 has 4.63 MB
Part 2, Pages 138 - 209 has 2.32 MB

Table of Contents

Part 1

1.

Introduction

1

1.1

Historical Development

1

1.2

Chemisorption Properties

3

1.3

Catalytic Behavior

4

1.4

The Nature of the metal/metal oxide Interface

6

1.5

Morphology of the metal/metal oxide systems

8

1.6

Deposition Of Oxide Overlayers

10

1.7

Scope of the Present Work

11

2.

Surface Analysis Techniques-Theory of Operation

14

3.

Experimental Apparatus

36

3.1

Varian Leed Chamber

36

3.2

XPS Chamber

42

4.

Experimental Procedures and Analysis

48

4.1

Sample Preparation And Experimental Procedures

48

4.2

Methods Of Analysis

56

5.

Experimental Results

63

5.1

The Properties of Rhodium Foil

63

5.2

The Properties Of Rhodium with Alumina Overlayers

69

5.3

The Properties of Rhodium with Titanium Overlayers

82

Part 2

6.

Discussion

138

6.1

Oxide Overlayer Characterization

138

6.2

CO Chemisorption

143

6.3

CO Hydrogenation

154

6.4

Ethylene Hydrogenation And Ethane Hydrogenolysis

163

7.

Conclusions and Recommendations

166

7.1

Conclusions Experimental

166

7.2

Conclusions Modeling

167

7.3

Recommendations

169

A.

Further Analysis of Oxide Overlayers

180

A.1

Alternative Means For Determining Overlayer Coverage

180

A.2

The Effect of Three-Dimensional Overlayer Growth On Coverage Determination

185

B.

Computer Programs

190

B.1

XPS Data Acquisition and Analysis Program

190

B.2

Monte Carlo Simulation Program

207