| 金属-有机骨架对苯二甲酸酯-铝吸附水中酚类化合物动力学和热力学 |
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| 引用本文： | 杨成雄,王士伟,严秀平. 金属-有机骨架对苯二甲酸酯-铝吸附水中酚类化合物动力学和热力学[J]. 应用化学, 2016, 33(9): 1040-1046. DOI: 10.11944/j.issn.1000-0518.2016.09.160211 |
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| 作者姓名： | 杨成雄 王士伟 严秀平 |
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| 作者单位： | 南开大学化学学院,分析科学研究中心 天津 300071 |
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| 基金项目： | 973项目(2015CB932001)和国家自然科学基金项目(21305071)资助 |
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| 摘 要： | 以吸附等温线、动力学和热力学等方法研究了金属-有机骨架对苯二甲酸酯-铝[MIL-53(Al),MIL:Materials of Institut Lavoisier]对水中邻硝基苯酚、苯酚和邻苯二酚的吸附行为。 MIL-53(Al)对上述酚类化合物的吸附符合准二级吸附动力学模型,且包含表面吸附和孔内扩散两个过程。 吸附热力学结果表明,MIL-53(Al)对酚类化合物的吸附是自发的,且为吸热和熵增加过程。 在40 ℃条件下,MIL-53(Al)对邻硝基苯酚、苯酚和邻苯二酚的吸附量分别为78.6、30.5和16.5 mg/g。
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| 关 键 词： | 金属-有机骨架 吸附 酚类化合物 对苯二甲酸酯-铝 |
| 收稿时间： | 2016-05-20 |
Adsorption Thermodynamics and Kinetics of Phenols on Metal-Organic Framework Aluminum Terephthalate in Water |
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| YANG Chengxiong,WANG Shiwei,YAN Xiuping. Adsorption Thermodynamics and Kinetics of Phenols on Metal-Organic Framework Aluminum Terephthalate in Water[J]. Chinese Journal of Applied Chemistry, 2016, 33(9): 1040-1046. DOI: 10.11944/j.issn.1000-0518.2016.09.160211 |
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| Authors: | YANG Chengxiong WANG Shiwei YAN Xiuping |
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| Affiliation: | Research Center for Analytical Sciences,College of Chemistry,Nankai University,Tianjin 300071,China |
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| Abstract: | Adsorption of phenols such as o-nitrophenol, phenol, and catechol on metal-organic framework aluminum terephthalate[MIL-53(Al), MIL:Materials of Institut Lavoisier] was investigated in detail in terms of adsorption isotherms, thermodynamics, and kinetics. The adsorption of the phenols on MIL-53(Al) follows a pseudo-second order kinetic model. Intraparticle diffusion model analysis reveals that the adsorption of the phenols on MIL-53(Al) proceeds by two phases, surface sorption and intraparticle/pore diffusion. The adsorption of phenols fits well with the Freundlich model. In addition, the results indicate that the adsorption of the phenols on MIL-53(Al) is a thermodynamically spontaneous process with positive enthalpy change and positive entropy change. The adsorption capacities for o-nitrophenol, phenol, and catechol at 40 ℃ are 78.6, 30.5, and 16.5 mg/g, respectively. |
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| Keywords: | metal-organic framework adsorption phenols aluminum terephthalate |
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