二氧化碳作為主要的溫室氣體,是造成全球變暖的因素之一。使用高溫氧化鈣(CaO)基吸附劑捕獲二氧化碳(CO₂)得到了廣泛關(guān)注。本文研究了表面活性劑和惰性介質(zhì)對(duì)氧化鈣(CaO)基吸附劑形貌及其二氧化碳吸附性能的影響。通過(guò)沉淀法,以聚苯乙烯磺酸鈉(PSS)和聚醚(F127)為表面活性劑,并以MgO為惰性介質(zhì),制備了具有花生狀結(jié)構(gòu)的氧化鈣基吸附劑,較優(yōu)的制備條件為[F127]=3 g/L,[PSS]=1 g/L,Ca/Mg=1。結(jié)果表明,惰性組分鎂的添加顯著提高了吸附劑的吸附穩(wěn)定性,并且Ca和惰性組分Mg的比例對(duì)吸附劑的形貌產(chǎn)生了很大影響。以十二烷基硫酸鈉(SDS)作為模板劑,以氯化鈣和碳酸鈉為原料,通過(guò)沉淀反應(yīng)制備出中空球狀氧化鈣基吸附劑。當(dāng)十二烷基硫酸鈉濃度為2 g/L時(shí),形貌較好。熟化時(shí)間對(duì)吸附劑的空心程度和殼層厚度有較大影響,較長(zhǎng)的熟化時(shí)間有利于增加吸附劑的空心程度。

【文章頁(yè)數(shù)】：73 頁(yè)

【學(xué)位級(jí)別】：碩士

【文章目錄】：
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



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