文摘
英文文摘
学位论文数据集
List of Schemes, Figures and Tables
List of Schemes
List of Figures
List of Tables
Abbreviations
Chapter 1 General introduction
1.1 Sulfur in fuel oils
1.2 Types of S-compound in fuel oils
1.3 Permissible limits of S in fuel oils
1.4 History of desulfurization .
1.5 Techniques used for the desulfurization of fuel oils
1.5.1 Oxidative desulfurization
1.5.2 Biodesulfurization process
1.5.3 Adsorption desulfurization
1.5.4 Extractive desulfurization
1.5.5 Hydrodesulfurization (HDS) process
1.6 Chemical aspects of liDS process
1.6.1 Chemical nature of the HDS catalyst
1.6.2 Presulfidation of HDS catalyst
1.6.3 Role of catalytic support in HDS catalyst
1.6.4 Role of additives used during HDS process
1.7 Utilization of hydrogen in HDS reaction
1.7.1 External hydrogen supply based (ex situ) HDS process
1.7.2 Internal generated hydrogen based (in situ) HDS process
1.8 Mechanism of liDS reaction
1.8.1 Direct desulfurization (DDS) pathway
1.8.2 Hydrogenolysis/Hydrogenation (HYD) pathway
1.9 Practical implementation/mechanization of HDS process
1.9.1 Fixed bed column (continuous) HDS process
1.9.2 Autoclave (batch reactor) HDS process
1.10 Conclusions, aims and objectives
Chapter 2 HDS of DBT over Ru promoted catalysts using in situ hydrogen generated via ethanol reforming reaction
2.1 Chemicals
2.2 Analytical instruments used for characterization
2.2.1 HPLC analysis
2.2.2 GC-MS Analysis
2.2.3 Characterization of fresh and spent catalytic samples
2.3 HDS of DBT using Ru promoted Mo based catalyst
2.3.1 Experimental
2.4 Results and discussion
2.4.1 Textural properties of support and catalysts
2.4.2 HDS activity
2.4.3 Product distribution and GC-MS analyses
2.5 Conclusions
Chapter 3 HDS of DBT over Pd promoted catalysts using in situ hydrogen generated via Ethanol reforming reaction
3.1 Experimental
3.1.1 Catalysts preparation
3.1.2 Characterization of support and catalysts for textural properties
3.1.3 HDS activity of the catalysts using DBT as model fuel
3.1.4 Pressure gradient during in situ hydrogen based HDS process
3.1.5 Product analyses
3.2 Results and discussion
3.2.1 Textural properties of the support, fresh and spent catalysts
3.2.2 HDS catalytic activity measurement
3.2.3 Product distribution and GC-MS analyses
3.3 Conclusions
Chapter 4 HDS of DBT over Pd promoted catalysts using in situ hydrogen generated via methanol reforming reaction
4.1 Experimental
4.1.1 Catalysts preparation
4.1.2 Characterization of the catalysts
4.1.3 Catalytic activity measurement in reims of liDS of DBT
4.1.4 Pressure variation during HDS process
4.1.5 Characterization and analyses of HDS products
4.2 Results and discussion
4.2.1 Textural properties of the native support and catalysts
4.2.2 Catalytic activity measurements for methanol reforming and HDS of DBT reactions
4.2.3 GC-MS analyses and product distribution
4.3 Conclusions
Chapter 5 Comparative analysis of the successive improvements in the current in situ HDS process
5.1 Comparative analysis of ethanol and methanol reforming reactions
5.2 Effect of different noble metals promotion
5.3 Effect of temperature on HDS process
5.4 Conclusions
Chapter 6 Conclusions and future plans
6.1 Conclusions
6.2. Future plans
References
Acknowledgements
List of Publications
Resume of the author
Resume of the Supervisor
博士研究生学位论文答辩委员会决议书