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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