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摘要本文利用水热合成法合成有序介孔材料SBA-15和MCM-41，对SBA-15和MCM-41进行基本表征。XRD表征说明所合成的SBA-15和MCM-41为有序六方孔结构；N2吸附/脱附实验说明SBA-15具有较大的比表面积；SEM可以看出MCM-41颗粒呈球状堆积，分布较均匀，直径约为200-300 nm，SBA-15大部分为棒状，长度为700-800 nm，宽度约为300-500 nm。
本文以硅基分子筛SBA-15作为吸附剂，研究了其吸附含苯酚模拟废水，分别考察了pH、温度、接触时间和初始浓度影响下的最佳吸附条件。结果表明：当pH为4，温度为15 ℃，吸附时间为40 min，初始浓度为100 mg/L时，SBA-15对苯酚的吸附达到最佳。并对SBA-15吸附苯酚进行了热力学和动力学的研究，结果表明：SBA-15对苯酚的吸附均满足Langmuir吸附等温方程和准二级吸附动力学。63817
毕业论文关键词：有序介孔材料 SBA-15 MCM-41 苯酚 吸附
毕业设计说明书（论文）外文摘要
Title Ordered Mesoporous for Adsorption of Phenol in Waste Water Treatment
Abstract In this paper,using hydrothermal synthesis method synthesizes the ordered mesoporous materials SBA - 15 and MCM - 41, and characterizes them.XRD patterns illustrate the synthesized SBA-15 and MCM-41 have the ordered hexagonal pore structure;N2 adsorption / desorption experiments show that SBA-15 has a larger surface area;It can be seen from SEM that MCM-41 particles were accumulation as ellipsoidal, distributes more uniformly, and diameter is about 200-300 nm.Most of the SBA-15 are present as rod, their length is 700-800 nm and their width is about 300-500 nm.
In this paper, silicon-based molecular sieve SBA-15 is used to study the adsorption of phenol-containing wastewateras the adsorbent and the influence of pH, temperature, contact time and initial concentration are studied.The results show that: the adsorption for phenol is optimal when pH is 4, the temperature is 15 ℃, adsorption time is 40 min and the initial concentration is 100 mg/L.The adsorption of SBA-15 on phenol is carried out thermodynamic and kinetic studies, the results showed that: The adsorption of SBA-15 on phenol meet the Langmuir isotherm equation and the quasi-two adsorption kinetics.
Keywords: Ordered mesoporous materials SBA-15 MCM-41 Phenol Adsorption
1 引言 1
1.1 介孔材料的概述 1
1.2 有序介孔材料 2
1.2.1 有序介孔材料的合成 2
1.2.2 有序介孔材料的应用 2
1.3 环境污染物苯酚 4
1.4 文本的研究思路及主要内容 5
2. 实验药品、仪器和材料制备 6
2.1 实验药品与仪器 6
2.2 材料的结构表征方法 7
2.2.1 比表面积分析测试 (BET) 7
2.2.2 X-射线衍射 (XRD) 7
2.2.3 扫描电镜测试分析(SEM) 7
2.3 污染物测试方法 8
2.4 实验材料制备 8
2.4.1 六方相的MCM-41的制备 8
2.4.2 介孔分子筛SBA-15的制备 8
3 结果与讨论