关键词: 球形酚醛树脂, 球形活性炭, 水蒸气活化, 吸附性能

Abstract: The method of preparing activated carbon from spherical phenolic resin is studied and its adsorption performance is discussed. The raw materials and rotational speed used in the synthesis of spherical phenolic resin were first screened. Then, the carbonization and steam activation processes of the activated carbon prepared from phenolic resin were optimized, while adsorption properties of the activated carbon were tested. Furthermore, the adsorption desorption isotherm, specific surface, and micropore volume of activated carbon with excellent adsorption performance were also measured. The results indicated that the best raw materials for synthesizing spherical phenolic resin were phenol, formaldehyde and triethylenetetramine with the molar ratio of 1∶1.13∶0.04. The phenolic resin with particle size between 0.35 mm and 0.50 mm obtained at the optimal speed of 600 r/min. Spherical activated carbon was prepared by carbonization at 600 ℃ and activation of the spherical phenolic resin at 800 ℃. Activated carbon conforms to the type I adsorption curve defined by IUPAC. The pore size distribution was between 0.5 and 2 nm, and the specific surface area reached 1 431.89 m²/g. The adsorption efficiency of activatedcarbon for DL-β-aminoisobutyric- DOI:10.3969/j.issn.1000-1565.2020.03.008酚醛树脂基球形活性炭的制备及其吸附性能尹纪伟,杜洁,王旭明,张芳华,李雪,李玮,张红蕾(河北大学 化学与环境科学学院,药物化学与分子诊断教育部重点实验室,河北 保定 071002)摘 要:对球形酚醛树脂制备活性炭的方法进行了优化并探讨了其吸附性能.分别对合成球形酚醛树脂过程中所用原料、转速进行了筛选,优化了由酚醛树脂制备活性炭的炭化和水蒸气活化过程,并考察了活性炭的吸附性能.对吸附性能优异的活性炭进行了氮气吸附-脱附等温线、比表面积及微孔体积的测定.结果表明:苯酚、甲醛和三乙烯四胺为合成球形酚醛树脂的最佳原料,三者的物质的量比为1∶1.13∶0.04.在转速为600 r/min时可获得粒径为0.35~0.50 mm的球形酚醛树脂.酚醛树脂经过600 ℃炭化和800 ℃活化过程制得球形活性炭.活性炭符合IUPAC定义的I型吸附曲线,孔径分布以微孔(0.5~2 nm)为主,比表面积可达1 431.89 m²/g,对DL-β氨基异丁酸和α-淀粉酶的吸附效率分别为63.41%和19.77%.关键词:球形酚醛树脂;球形活性炭;水蒸气活化;吸附性能中图分类号:TQ424.1 文献标志码:A 文章编号:1000-1565(2020)03-0276-07Preparation and adsorption properties of phenolic resin based spherical activated carbonYIN Jiwei, DU Jie, WANG Xuming, ZHANG Fanghua, LI Xue, LI Wei, ZHANG Honglei(Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, College of Chemistry and Environmental Sciences, Hebei University, Baoding 071002, China)Abstract: The method of preparing activated carbon from spherical phenolic resin is studied and its adsorption performance is discussed. The raw materials and rotational speed used in the synthesis of spherical phenolic resin were first screened. Then, the carbonization and steam activation processes of the activated carbon prepared from phenolic resin were optimized, while adsorption properties of the activated carbon were tested. Furthermore, the adsorption desorption isotherm, specific surface, and micropore volume of activated carbon with excellent adsorption performance were also measured. The results indicated that the best raw materials for synthesizing spherical phenolic resin were phenol, formaldehyde and triethylenetetramine with the molar ratio of 1∶1.13∶0.04. The phenolic resin with particle size between 0.35 mm and 0.50 mm obtained at the optimal speed of 600 r/min. Spherical activated carbon was prepared by carbonization at 600 ℃ and activation of the spherical phenolic resin at 800 ℃. Activated carbon conforms to the type I adsorption curve defined by IUPAC. The pore size distribution was between 0.5 and 2 nm, and the specific surface area reached 1 431.89 m²/g. The adsorption efficiency of activatedcarbon for DL-β-aminoisobutyric- 收稿日期:2019-08-12 基金项目:河北省自然科学基金专项-重点项目(B2016201031);河北省高等学校高层次人才科学研究项目(GCC 2014014) 第一作者:尹纪伟(1994—),男,山东临沂人,河北大学在读硕士研究生,主要从事纳米药物递送系统开发方向研究.E-mail: 1659077386@qq.com 通信作者:杜洁(1979—),女,河北石家庄人,河北大学实验师,主要从事药物分析研究.E-mail: dujie2008@126.com张红蕾(1985—),女,河北保定人,河北大学助理研究员,主要从事生物酶催化及纳米载药递送系统研究.E-mail: zh10724@126.com第3期尹纪伟等:酚醛树脂基球形活性炭的制备及其吸附性能acid and α-amylase was 63.41% and 19.77%, respectively.

Key words: spherical phenolic resin, spherical activated carbon, steam activation, adsorption performance