模拟苯直接氧化制备苯酚反应中苯和苯酚的吸附  

The adsorption of benzene and phenol under the simulated reaction condition of directly hydroxylation of benzene to phenol

作　　者：马养民[1] 任喜迎 王伟涛[1] 张鋆[1] 石磊磊[1] 卢萍[1] 

机构地区：[1]陕西科技大学化学与化工学院教育部轻化工助剂化学与技术重点实验室,陕西西安710021

出　　处：《陕西科技大学学报（自然科学版）》2016年第1期72-76,81,共6页Journal of Shaanxi University of Science & Technology

基　　金：国家自然科学基金项目(21403136);陕西科技大学博士科研启动基金项目(BJ13-26)

摘　　要：模拟苯直接氧化制备苯酚的反应条件,分别以活性炭和水热法制备的亲水炭作为吸附剂,考察了这两种炭在不同溶剂及不同苯和苯酚的初始浓度下的吸附,并较为深入的探讨了溶剂和初始浓度对活性炭及亲水炭吸附苯和苯酚的吸附效果的影响.研究结果表明:活性炭和亲水炭吸附苯和苯酚的平衡时间约为20min或25min,溶剂对吸附平衡时间影响不大;相同吸附剂条件下,从不同的溶剂对吸附量的影响中发现苯和苯酚的吸附中用乙醇为溶剂时效果最好,亲水炭对苯的吸附效果较活性炭好,而活性炭对苯酚的吸附效果较亲水碳好.The adsorption characteristic of the hydrophilic carbon prepared by one pot hydrothermal method and the activated carbon were studied from the perspective of hydroxylation of benzene to phenol.The influence of different solvents and initial concentration of phenol and benzene for the adsorption was investigated.The effect of solvent and the initial concentration for adsorption of benzene and phenol was discussed.The results show that adsorption equilibration time of benzene and phenol adsorbed by activated carbon and by hydrophilic carbon is about 20 min or 25 min,solvents have little effect on the adsorption equilibrium time.From the influence of different solvents on the adsorption of benzene and phenol under the condition of same adsorbent,it is found that the ethanol is the best solvent.The result of hydrophilic carbon for the adsorption of benzene is better than the activated carbon,and activated carbon adsorption of phenol is better than hydrophilic carbon.

关 键 词：亲水炭 活性炭 苯酚 苯 吸附 

分 类 号：O643.32[理学—物理化学]