CAJ | 학술논문

以纳米碳酸钙为模版剂,以精制煤沥青为包覆材料,通过对其炭化、去模板剂和活化处理,制得了沥青基炭材料.实验选用苯酚为吸附质,研究了制备过程对所制炭材料吸附性的影响、吸附过程遵循的吸附规律以及吸附热力学变化规律.结果表明,在相同活化条件下,未经模板剂碳酸钙处理的煤沥青得到的炭材料对苯酚的吸附量为1．9 mmol/g,而由碳酸钙与沥青质量比为1∶2所制备的炭材料,吸附量可达2．49 mmol/g.即使用模板剂后炭材料吸附量提高了31％；进一步对苯酚等温吸附规律的研究表明,其吸附过程符合Freundlich方程；吸附热力学分析表明,吸附热在35．9~50．8 kJ/mol,属于典型的物理吸附过程,其研究为煤沥青的利用提供了一条新的途径.
이납미탄산개위모판제,이정제매력청위포복재료,통과대기탄화、거모판제화활화처리,제득료력청기탄재료.실험선용분분위흡부질,연구료제비과정대소제탄재료흡부성적영향、흡부과정준순적흡부규률이급흡부열역학변화규률.결과표명,재상동활화조건하,미경모판제탄산개처리적매력청득도적탄재료대분분적흡부량위1．9 mmol/g,이유탄산개여력청질량비위1∶2소제비적탄재료,흡부량가체2．49 mmol/g.즉사용모판제후탄재료흡부량제고료31％；진일보대분분등온흡부규률적연구표명,기흡부과정부합Freundlich방정；흡부열역학분석표명,흡부열재35．9~50．8 kJ/mol,속우전형적물리흡부과정,기연구위매력청적이용제공료일조신적도경.
In order to obtain a high absorptive pitch-based carbon material,the combination of template and chemical activation has been used to prepare functional absorptive carbon material.The nano calcium carbonate was chosen as a template and potassium hydroxide as an activation agent.With phenol as a adsorbate to estimate the adsorptivity of the carbon material.The results showed that the adsorption capacity of the carbon material was affected by the proportion of template to coal tar pitch.It reaches 2.49 mmol/g when the mass ratio of calci-um carbonate to pitch was 1∶2.At the same condition,the adsorption capacity of the carbon material prepared by pitch alone was only 1 .9 mmol/g.It increases by 3 1% comparing with usage of the template.Further analy-sis shows that the adsorption process accords with the Freundlich equation.And its adsorption heat was between 35.9-50.8 kJ/mol,which indicates that it belongs to the typical physical absorption.The research provides a new choice for utilizing coal tar pitch.