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Mechanism of Promotion of Iron Fischer-Tropsch Catalysts: Final Report - 1987

Davis, B. H. 
Dabbagh, H
Chawla, B.
Tau, L. M.

University of Louisville Research Foundation

Table of Contents 37kb

Section 1
514kb
Summary i

I

Introduction 1

I-A

Promoters 1

I-B

Isotopic Tracer Studies 2
 

I-B-1

Emmett and Coworkers 2
Section 2
446kb

I-B-2

Schulz and Coworkers 22

I-B-3

Other 14c Tracer Studies 36

I-B-4

Other Tracer Studies 38

I-C

Outline of Proposed Research 40
References for Section I 45
Section 3
345kb

II

Experimental 48

II-A

Synthesis of 14c Labeled Compounds 48

II-B

Catalyst Preparation 49

II-C

Catalyst Characterization 51
 

II-C-1

ESCA 51

II-C-2

XRD 51

II-C-3

Mossbauer 51

II-D

Catalytic Conversions 51
 

II-D-1

Atmospheric Pressure Reactor 51

II-D-2

Continuous Stirred Tank Reactor (CSTR) System 53

III-D-2-a

Slurry Reactor 53

II-E

Product Analysis 53

II-F

Product Separations 58
 

II-F-1

Alkane, Alkene and Alcohol Separation 58

II-F-2

HPLC Procedures for Fischer-Tropsch Reaction Products 64

II-F-3

Material Balance 65
Section 4
436kb

III

Results and Discussion 71

III-A

Reactant Holdup 71

III-B

Silica Catalyzed Secondary Oxygenate Reactions 75

III-C

Anticipated 14c Incorporation Patterns for Alkane Products 83

III-D

Comparison of Runs at 1 and 7 Atmosphere Pressure 85
 

III-D-1

CO Conversion 85

III-D-2

Carbon Number Distribution 87

III-D-3

Selectivity 87

III-D-4

CO/H2/14c Labeled Ethanol 90

III-E

Isoalkane Formation 95
Section 5
446kb

III-E-1

Carbon-14 Tracer Studies 98

III-F

Comparison of Conversion of CO/H2 with either i- or n-propanol 107
 

III-F-1

Chemical Compositions 107

III-F-2

Radioactive Compositions 107

III-F-3

Mechanistic Aspects of i- or n-propanol Incorporation 119
Section 6
402kb

III-G

Role of Promoter on Product Selectivity 126

III-H

Results from Adding Labeled Alkenes to the Syngas 142
Section 7
300kb

III-I

Results from Adding Labeled Alcohols to the Syngas 152

III-J

Comparison of Initiation by Alcohol and Alkene 162
References for Section III 173