HKUST-1吸附噻吩和二苯并噻吩性能研究

汤雁婷, 申文静, 郭一帆, 杨洋, 相丹丹, 郭泉辉

现代化工 ›› 2021, Vol. 41 ›› Issue (8) : 117 -121.

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现代化工 ›› 2021, Vol. 41 ›› Issue (8) : 117-121. DOI: 10.16606/j.cnki.issn0253-4320.2021.08.024
科研与开发

HKUST-1吸附噻吩和二苯并噻吩性能研究

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Study on adsorption performances of HKUST-1 for thiophene and dibenzothiophene

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摘要

基于水热法制备了HKUST-1,通过XRD、SEM、FT-IR、N2吸脱附和NH3-TPD等手段对其进行表征,采用静态和动态吸附法考察了HKUST-1对噻吩(Th)和二苯并噻吩(DBT)的吸附性能,并通过Langmuir和Freundlich等温吸附模型及吸附动力学对吸附机理进行分析。结果表明,Freundlich模型能更好地拟合HKUST-1对Th和DBT的吸附;HKUST-1对噻吩类硫化物的吸附符合准二级动力学模型,吸附主要以化学吸附为主,扩散是吸附速率的影响因素;HKUST-1对Th和DBT的穿透硫容分别为10.03 mg/g和25.64 mg/g。

Abstract

HKUST-1 is prepared based on the hydrothermal method, and characterized by XRD, SEM, FT-IR, N2 adsorption-desorption and NH3-TPD. The adsorption performances of HKUST-1 for thiophene (Th) and dibenzothiophene (DBT) are investigated by means of static and dynamic adsorption methods, and the adsorption mechanism is studied by means of Langmuir and Freundlich isotherm adsorption models, and kinetic analysis. It is found that Freundlich model can better fit the adsorption of Th and DBT by HKUST-1. The adsorption of thiophene-type sulfides by HKUST-1 conforms to quasi-second-order kinetic model, and chemical adsorption plays a major role and diffusion is a factor affecting the adsorption speed. The breakthrough sulfur capacities of HKUST-1 for Th and DBT are 10.03 mg·g-1 and 25.64 mg·g-1, respectively.

关键词

HKUST-1 / 动力学 / 热力学 / 二苯并噻吩 / 噻吩

Key words

HKUST-1 / kinetics / thermodynamics / dibenzothiophene / thiophene

Author summay

汤雁婷(1986-),女,博士,讲师,研究方向为先进功能材料,tangyanting@henu.edu.cn

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汤雁婷, 申文静, 郭一帆, 杨洋, 相丹丹, 郭泉辉. HKUST-1吸附噻吩和二苯并噻吩性能研究[J]. 现代化工, 2021, 41(8): 117-121 DOI:10.16606/j.cnki.issn0253-4320.2021.08.024

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