ADSORPTION PROPERTIES OF ACIDIFIED ACTIVATED CARBON FOR REMOVING IMPURITIES FROM PHENOL
2,4-diphenyl-4-methyl-1-pentene is a main impurity in phenol.In this paper,acidified activated carbon with sulfuric acid were used to remove the impurity from phenol.Combined with solid-phase microextraction(SPME)and gas chromatography-mass spectrometry(GC-MS),the adsorption capacity and mechanism of acidified activated carbon were analyzed.Unacidified and sulfated activated carbon was characterized by scanning electron microscopy(SEM).The adsorption mechanism of 2,4-diphenyl-4-methyl-1-pentene on sulfuric acid acidified activated carbon was investigated.The acidified activated carbon of sulfuric acid has much better adsorption capacity than the unacidified activated carbon on 2,4-diphenyl-4-methyl-1-pentene.The sulfuric acid acidified activated carbon has no obvious adsorption effectiveness on mesityl oxide and 2-methylbenzofuran.The optimum adsorption time of sulfuric acid acidified activated carbon for 2,4-diphenyl-4-methyl-1-pentene was 1 h,the removal rate was 82%.The Freundlich isothermal adsorption model can describe the adsorption behavior of 2,4-diphenyl-4-methyl-1-pentene on sulfuric acid acidified activated carbon.The adsorption process conforms to the pseudo-second-order kinetics model and is a chemical adsorption.The sulfuric acid acidified activated carbon can remove 2,4-diphenyl-4-methyl-1-pentene form phenol very well,which provide a theoretical basis and technical support for the phenol industry.
Acidified activated carbon 2,4-diphenyl-4-methyl-1-pentene adsorption capacity adsorption mechanism
Xuying Liu Hao Zhang Lili Lian Xiyue Wang Wenxiu Gao Bo Zhu Yanan Guan Yang Xu Dawei Lou
Department of Analytical Chemistry,Jilin Institute of chemical Technology,45 Chengde Street,Jilin 132022,PR China
国际会议
吉林
英文
357-360
2018-06-23（万方平台首次上网日期，不代表论文的发表时间）