铜活化木质素活性炭的制备与性能  

Preparation and Properties of Copper-Activated Lignin Activated Carbon

作　　者：邱亚茹 兰鲲 陈常东 王芳芳 陆彩云 QIU Yaru;LAN Kun;CHEN Changdong;WANG Fangfang;LU Caiyun(School of Petrochemical Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China)

机构地区：[1]辽宁石油化工大学石油化工学院,辽宁抚顺113001

出　　处：《辽宁石油化工大学学报》2024年第5期1-7,共7页Journal of Liaoning Petrochemical University

基　　金：教育部“春晖计划”合作科研项目(2020703-8);国家留学基金委公派访学学者面上项目(CSC202008210025);辽宁省教育厅项目(LJKMZ20220736,JYTMS20231424)。

摘　　要：以木质素磺酸钠和二水合氯化铜为原料,在N_(2)氛围及不同的合成条件下,采用浸渍活化法煅烧制备了活性炭改性材料;通过X射线衍射(XRD)、红外光谱(FT-IR)、X-射线光电子能谱(XPS)等测试手段研究了所制备样品的结构和表面形貌;以质量浓度为20 mg/L的K_(2)Cr_(2)O_(7)溶液为研究对象,通过二苯碳酰二肼显色法,检测溶液中的Cr(Ⅵ)质量浓度并计算了所制备的活性炭改性材料的吸附容量。结果表明,当Cu质量分数为20%、煅烧温度为700℃时,样品的吸附性能最好,吸附容量为72.2 mg/g;吸附过程符合Langmuir单层吸附和准二级动力学。Using sodium lignosulfonate and copper chloride dihydrate as raw materials,and activated carbon modified materials under different synthetic conditions were prepared by calcination under N_(2) atmosphere by impregnation and activation.The structure and surface morphology of the prepared materials were studied by X-ray diffraction(XRD),infrared spectroscopy(FT-IR),X-ray photoelectron spectroscopy(XPS)and other testing methods.Taking K_(2)Cr_(2)O_(7)solution with mass concentration of 20 mg/L as the research object,the Cr(Ⅵ)content in the solution was detected by Diphenyl carbamide chromogenic method,and the adsorption capacity of the prepared activated carbon modified materials was calculated.According to the experimental results,when the proportion of copper is 20%and the calcination temperature is 700℃,the adsorption performance of the material is the best,and the adsorption capacity is 72.2 mg/g.The adsorption process conforms to the Langmuir monolayer adsorption and Pseudo-second-order kinetics.

关 键 词：煅烧法 木质素 Cr离子 吸附 

分 类 号：TQ134.1[化学工程—无机化工]