氧化钙基吸附剂的形貌及其CO 2 吸附性能
发布时间：2024-03-02 11:18
二氧化碳作为主要的温室气体,是造成全球变暖的因素之一。使用高温氧化钙(CaO)基吸附剂捕获二氧化碳(CO2)得到了广泛关注。本文研究了表面活性剂和惰性介质对氧化钙(CaO)基吸附剂形貌及其二氧化碳吸附性能的影响。通过沉淀法,以聚苯乙烯磺酸钠(PSS)和聚醚(F127)为表面活性剂,并以MgO为惰性介质,制备了具有花生状结构的氧化钙基吸附剂,较优的制备条件为[F127]=3 g/L,[PSS]=1 g/L,Ca/Mg=1。结果表明,惰性组分镁的添加显著提高了吸附剂的吸附稳定性,并且Ca和惰性组分Mg的比例对吸附剂的形貌产生了很大影响。以十二烷基硫酸钠(SDS)作为模板剂,以氯化钙和碳酸钠为原料,通过沉淀反应制备出中空球状氧化钙基吸附剂。当十二烷基硫酸钠浓度为2 g/L时,形貌较好。熟化时间对吸附剂的空心程度和壳层厚度有较大影响,较长的熟化时间有利于增加吸附剂的空心程度。
【文章页数】：73 页
【学位级别】：硕士
【文章目录】：
摘要
ABSTRACT
LIST OF ACRONYMS AND SYMBOL
CHAPTER ONE INTRODUCTION
1.1 RESEARCH BACKGROUND
1.2 MOTIVATION OF THE RESEARCH
1.3 OBJECTIVES
1.3.1 General Objective
1.3.2 Specific Objective
1.4 METHODOLOGY
CHAPTER TWO LITRATURE REVIEW
2.1 GLOBAL WARMING AND CO2 EMISSIONS
2.2 POSSIBLE CARBON DIOXIDE SEPARATION TECHNIQUES
2.2.1 Absorption Process
2.2.2 Adsorption Process
2.2.3 The Cryogenic Process
2.2.4 Membrane Separation Process
2.3 EXISTING CARBON DIOXIDE CAPTURE ADSORBENTS
2.3.1 Molecular Sieve Adsorbent
2.3.2 Carbon-Based Adsorbent
2.3.3 Hydro- Talcite Adsorbent
2.3.4 Lithium-Based Adsorbent
2.3.5 Calcium Based Adsorbent
2.4 CALCIUM-BASED ADSORBENT MORPHOLOGY
2.4.1 Butterfly
2.4.2 Needle- shaped
2.4.3 Spindle- Shaped
2.4.4 Hollow Spherical
2.5 INFLUENCE OF INERT MATERIAL AND SURFACTANT
2.5.1 Inert Support Material
2.5.2 Surfactant
2.6 RESEARCH WORK PLAN
CHAPTER THREE EXPERIMENTAL DETAILS
3.1 EXPERIMENTAL MATERIAL AND EQUIPMENT
3.2 PREPARATION OF MODIFIED CAO- BASED MORPHOLOGY
3.2.1 Adsorbent Preparation Procedure for modified calcium- based morphology
3.2.2 Adsorbent Preparation Procedure For Hollow Spherical Calcium-BasedAdsorbent
3.3 CHARACTERIZATION METHODS
3.3.1 Scanning Electron Microscopy (SEM)
3.3.2 Transmission Electron Microscopy (TEM)
3.3.3 Brunauer Emmett Teller (BET)
3.3.4 X-Ray Diffraction (XRD)
3.4 ADSORBENT ADSORPTION PERFORMANCE EVALUATION
3.4.1 Experimental Equipment And Process
3.4.2 Calculation Methods
CHAPTER FOUR PREPARATION AND EVALUATION OF MODIFIEDMORPHOLOGY OF CALCIUM- BASED ADSORBENT
4.1 INTRODUCTION
4.2 INFLUENCE OF SURFACTANT CONCENTRATION ON THE MORPHOLOGYOF ADSORBENTS
4.2.1 Influence of F127 Concentration On The Morphology Of Adsorbent
4.2.2 Influence of PSS Concentration On The Morphology Of Adsorbents
4.3 DISCUSSION ON MECHANISM OF SURFACTANT INFLUENCINGMORPHOLOGY
4.4 INFLUENCE OF Ca / Mg RATIO ON THE MORPHOLOGY OF ADSORBENTS
4.5 EFFECTS OF DIFFERENT PRECURSORS ON MORPHOLOGY OFADSORBENTS
4.6 ADSORBENT PERFORMANCE EVALUATION
4.7 SUMMARY OF THIS CHAPTER
CHAPTER FIVE PREPARATION AND EVALUATION OF HOLLOW SPHERICAL CA-BASED ADSORBENTS
5.1 INTRODUCTION
5.2 EFFECT OF SURFACTANTS ON MORPHOLOGY OF ADSORBENTS
5.2.1 Effect of Surfactant Types
5.2.2 Effect of Surfactant Concentration
5.3 EFFECT OF AGING ON THE MORPHOLOGY OF ADSORBENTS
5.4 ADSORBENT PERFORMANCE EVALUATION
5.5 SUMMARY OF THIS CHAPTER
CHAPTER SIX CONCLUSION
6.1 CONCLUSION
REFERENCE
PUBLISHED PAPER
ACKNOWLEDGEMENTS
本文编号：3916779
【文章页数】：73 页
【学位级别】：硕士
【文章目录】：
摘要
ABSTRACT
LIST OF ACRONYMS AND SYMBOL
CHAPTER ONE INTRODUCTION
1.1 RESEARCH BACKGROUND
1.2 MOTIVATION OF THE RESEARCH
1.3 OBJECTIVES
1.3.1 General Objective
1.3.2 Specific Objective
1.4 METHODOLOGY
CHAPTER TWO LITRATURE REVIEW
2.1 GLOBAL WARMING AND CO2 EMISSIONS
2.2 POSSIBLE CARBON DIOXIDE SEPARATION TECHNIQUES
2.2.1 Absorption Process
2.2.2 Adsorption Process
2.2.3 The Cryogenic Process
2.2.4 Membrane Separation Process
2.3 EXISTING CARBON DIOXIDE CAPTURE ADSORBENTS
2.3.1 Molecular Sieve Adsorbent
2.3.2 Carbon-Based Adsorbent
2.3.3 Hydro- Talcite Adsorbent
2.3.4 Lithium-Based Adsorbent
2.3.5 Calcium Based Adsorbent
2.4 CALCIUM-BASED ADSORBENT MORPHOLOGY
2.4.1 Butterfly
2.4.2 Needle- shaped
2.4.3 Spindle- Shaped
2.4.4 Hollow Spherical
2.5 INFLUENCE OF INERT MATERIAL AND SURFACTANT
2.5.1 Inert Support Material
2.5.2 Surfactant
2.6 RESEARCH WORK PLAN
CHAPTER THREE EXPERIMENTAL DETAILS
3.1 EXPERIMENTAL MATERIAL AND EQUIPMENT
3.2 PREPARATION OF MODIFIED CAO- BASED MORPHOLOGY
3.2.1 Adsorbent Preparation Procedure for modified calcium- based morphology
3.2.2 Adsorbent Preparation Procedure For Hollow Spherical Calcium-BasedAdsorbent
3.3 CHARACTERIZATION METHODS
3.3.1 Scanning Electron Microscopy (SEM)
3.3.2 Transmission Electron Microscopy (TEM)
3.3.3 Brunauer Emmett Teller (BET)
3.3.4 X-Ray Diffraction (XRD)
3.4 ADSORBENT ADSORPTION PERFORMANCE EVALUATION
3.4.1 Experimental Equipment And Process
3.4.2 Calculation Methods
CHAPTER FOUR PREPARATION AND EVALUATION OF MODIFIEDMORPHOLOGY OF CALCIUM- BASED ADSORBENT
4.1 INTRODUCTION
4.2 INFLUENCE OF SURFACTANT CONCENTRATION ON THE MORPHOLOGYOF ADSORBENTS
4.2.1 Influence of F127 Concentration On The Morphology Of Adsorbent
4.2.2 Influence of PSS Concentration On The Morphology Of Adsorbents
4.3 DISCUSSION ON MECHANISM OF SURFACTANT INFLUENCINGMORPHOLOGY
4.4 INFLUENCE OF Ca / Mg RATIO ON THE MORPHOLOGY OF ADSORBENTS
4.5 EFFECTS OF DIFFERENT PRECURSORS ON MORPHOLOGY OFADSORBENTS
4.6 ADSORBENT PERFORMANCE EVALUATION
4.7 SUMMARY OF THIS CHAPTER
CHAPTER FIVE PREPARATION AND EVALUATION OF HOLLOW SPHERICAL CA-BASED ADSORBENTS
5.1 INTRODUCTION
5.2 EFFECT OF SURFACTANTS ON MORPHOLOGY OF ADSORBENTS
5.2.1 Effect of Surfactant Types
5.2.2 Effect of Surfactant Concentration
5.3 EFFECT OF AGING ON THE MORPHOLOGY OF ADSORBENTS
5.4 ADSORBENT PERFORMANCE EVALUATION
5.5 SUMMARY OF THIS CHAPTER
CHAPTER SIX CONCLUSION
6.1 CONCLUSION
REFERENCE
PUBLISHED PAPER
ACKNOWLEDGEMENTS
本文编号：3916779
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