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TABLE OF CONTENTS1. INTRODUCTION 11.1. Coal energy 61.2. Environmental impact of coal 101.3. IGCC power plant 121.4. Gas clean up system in IGCC 151.4.1. Desulfurization 151.4.2. CO2 capture and WGS reaction 181-5. Objective 211.5.1. Desulfurization 211.5.2. CO2 capture 221.5.3. WGS reaction 222. LITERATURE REVIEW 252.1. Desulfurization sorbent 252.1.1. Mechanism of sulfidation 252.1.2. Mechanism of regeneration 252.1.3. Overview of metal oxide for the desulfurization 262.1.3.1. Zinc-based sorbents for moving-bed and fixed-bed applications 262.1.3.2. Zinc-based sorbents for fluidized-bed and transport reactors 292.1.3.3. Manganeses-based sorbents 312.1.3.4. Copper-based sorbents 312.2. CO2 sorbent 322.2.1. Physical sorbents 322.2.1.1. Activated-Carbon-Based Sorbents. Because of the low cost of raw materials 322.2.1.2. Zeolite Sorbents 332.2.1.3. Metal-Organic Framework 342.2.2. Chemical Sorbents 352.2.2.1. Amine-Functionalized Solid Sorbents 362.2.2.2. Regenerable Alkali-Metal Carbonate-Based Sorbents 372.3. WGS catalyst 412.3.1. Low temperature shift catalyst 412.3.2. High temperature shift catalyst 473. EXPERIMENT 513.1. Material preparation 513.1.1. CO2 sorbent preparation 513.1.2. WGS catalyst preparation 523-2. Apparatus and procedure 573.2.1. Desulfurization 573.2.2. CO2 capture 603.2.3. WGS reaction 644. RESULTS AND DISCUSSION 674.1. Desulfurization 674.1.1. Phenomenon of SO2 generation during desulfurization 674.1.2. Reason for SO2 generation: Oxygen by sorbent 694.1.3. Reason for SO2 generation: Oxygenby side reaction 714.1.4. Reason for SO2 generation: Oxygen by water 734.1.5. Effect of reducing gas on the desulfurization 764.2. CO2 capture 794.2.1. CO2 capture capacity of MgO-based sorbents 794.2.2. Effect of alkali metal nitrates on CO2 sorption 814.2.3. Effect of K2CO3 on CO2 sorption 884.2.4. Effect of potassium carbonate on regeneration 904.2.5. CO2 sorption and regeneration properties of the MS(5)P(5) sorbent 954.2.6. CO2 regeneration properties of the MS(5)P(5) sorbent 984.3. WGS catalyst 1024.3.1. Effect of thermal treatment on WGS activity 1024.3.2. Structural properties of catalysts 1064.3.3. Texture properties of catalyst 1084.3.4. Applicability of CuMg catalyst to SEWGS process in IGCC 1165. CONCLUSION 1195.1. Desulfurization 1195.2. CO2 sorbent 1195.3. WGS catalyst 1206. REFERENCE 123
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