CAJ | 학술논문

使用 D001型阳离子交换树脂为炭化前躯体，于 Cu2＋，Ni2＋，Fe3＋的硝酸盐溶液中浸渍进行阳离子交换负载金属离子，N2气氛下焙烧炭化后利用 CO2高温活化，制得负载金属的改性球形活性炭吸附剂。TG-DTG，XRD，SEM，BET 等表征结果表明，树脂炭化制得的改性活性炭球形结构保持良好，孔体积及比表面积较大，负载金属构成选择性吸附活性位。利用噻吩的环己烷溶液作为模拟汽油考察改性球形活性炭的吸附脱硫性能，结果表明：负载金属种类对吸附容量的影响由强到弱的顺序依次为 Fe＞Ni＞Cu，室温下噻吩的饱和吸附容量随温度升高而降低，一阶及二阶动力学方程均能较好地描述吸附传质过程，利用溶剂超声洗脱及热处理方式进行吸附剂再生，经3次再生后改性球形活性炭的噻吩吸附能力保持较好。
사용 D001형양리자교환수지위탄화전구체，우 Cu2＋，Ni2＋，Fe3＋적초산염용액중침지진행양리자교환부재금속리자，N2기분하배소탄화후이용 CO2고온활화，제득부재금속적개성구형활성탄흡부제。TG-DTG，XRD，SEM，BET 등표정결과표명，수지탄화제득적개성활성탄구형결구보지량호，공체적급비표면적교대，부재금속구성선택성흡부활성위。이용새분적배기완용액작위모의기유고찰개성구형활성탄적흡부탈류성능，결과표명：부재금속충류대흡부용량적영향유강도약적순서의차위 Fe＞Ni＞Cu，실온하새분적포화흡부용량수온도승고이강저，일계급이계동역학방정균능교호지묘술흡부전질과정，이용용제초성세탈급열처리방식진행흡부제재생，경3차재생후개성구형활성탄적새분흡부능력보지교호。
Strong acidic polystyrene-based cation exchange resin (D001)was used as carbonization precursor to prepare metal-loaded modified spherical activated carbons (SACs)for fuel adsorptive desul-furization. The modification procedures included metal loading through metallic cation exchange in met-al-containg salt solutions (Cu2+ ,Ni2+ ,Fe3+ nitrates),carbonized by calcinations followed by activation with CO2. TG-DTG,XRD,SEM and BET characterizations show that after carbonization and modifica-tion the SACs remain the spherical shape having large pore volume and specific surface area. The metal-lic particle disperses over the carbonized surface as the activated centers for adsorptive desulfurization.The desulfurization capacities of SACs were investigated by model gasoline composed of thiophene dis-solved in cyclohexane. The results reveal that the effect of the type of metal loaded on adsorption capaci-ty was the order Fe>Ni>Cu. The adsorption capacity decreases with temperature rising from 20 ℃ to 60 ℃. The first-order and second-order kinetic equations both fit the adsorption mass transfer process well. The SACs can be regenerated by ultrasonic ethanol solvent elution and heat treatment. After 3 times regeneration,the reactivated carbon still has a good adsorption capability of thiophene.