改性凹凸棒土的合成表征+文献综述

摘要：凹凸棒土（ATP）是一种含量丰富的天然非金属粘土矿物，它独特结构赋予了其独特的吸附性、分散性等物理化学性质。本文用硅烷偶联剂KH-560、β-环糊精，采用表面化学改性的方法对凹凸棒土进行改性，然后通过FT-IR对改性凹凸棒土的结构进行表征。研究了改性凹凸棒土中凹凸棒土原土用量对改性凹凸棒土吸附性能的影响，系统考察了凹凸棒土原土用量、吸附时间、改性凹凸棒土投加量等因素对吸附水中亚甲基蓝的影响。结果表明，凹凸棒土原土最佳用量为15g，吸附时间为30h时改性凹凸棒土（15-ATP）对水中亚甲基蓝吸附量可达到65.61mg/g。改性凹凸棒土投加量为40mg时，对亚甲基蓝的吸附率可达到98.98%。改性凹凸棒土对亚甲基蓝的吸附热力学符合Langmuir等温吸附方程，吸附动力学符合准二级反应动力学模型。26580
毕业论文关键词：凹凸棒土；改性；吸附；表征
The Preparation, Characterization of Modified Attapulgite
Abstract：Attapulgite (ATP) is a kind of rich natural nonmetallic clay mineral. And the unique structure of attapulgite gives it unique adsorption, dispersion and some other physical and chemical properties. In this paper, batch experiments have been conducted,as follows. Attapulgite is carried out modify by surface chemical modification, with silane coupling agent KH-560 and β-cyclodextrin. Then the structure of modified attapulgite is performed by FT-IR. Next we study the effect of raw soil dosage on the adsorption properties of modified mttapulgite when attapulgite is modified. And the most important is that we systematically investigate the factors affecting the adsorption of methylene blue in water, including the amount of attapulgite soil, the adsorption time, and the amount of modified attapulgite. The result shows that when the optimum dosage of attapulgite soil is 15g and the adsorption time is 30h, the adsorption capacity of modified attapulgite (15-ATP) to methylene blue in water can be 65.61mg/g. When the amount of modified attapulgite soil is 40mg, the adsorption rate of modified attapulgite to methylene blue can reach 98.98%. The adsorption thermodynamics of modified attapulgite to methylene blue conforms to the Langmuir isotherm adsorption equation, and the adsorption kinetics conforms to the quasi two order reaction kinetic model.
Keywords: Attapulgite; Modification; Characterization; Adsorption
目录

摘要….1
关键词….1
Abstract….1
Key words…1
引言….…1
1 材料与方法    2
1.1材料    2
1.1.1实验仪器    2
1.1.2实验试剂与材料    3
1.2方法    3
1.2.1凹凸棒土改性方法    3
1.2.2表征方法    4
1.2.3吸附实验    4
1.2.4测定方法    4
1.2.5分析方法    5
2.结果与分析    5
2.1合成方法及FT-IR分析    5
2.2不同吸附时间对吸附亚甲基蓝的影响    7
2.3不同凹凸棒土原土用量制备的改性土对吸附亚甲基蓝的影响    8
2.4改性凹凸棒土投加量对吸附亚甲基蓝的影响    9
2.5吸附动力学    10
2.5.1吸附动力学方程    10
2.5.2改性凹凸棒土吸附亚甲基蓝动力学分析    10
2.6吸附热力学    11
2.6.1吸附热力学方程    11
2.6.2改性凹凸棒土吸附亚甲基蓝热力学分析    12
3.结论    12
致谢.….13
参考文献….….13
附录红外谱图.14
改性凹凸棒土的合成、表征改性凹凸棒土的合成表征+文献综述:http://www.751com.cn/huaxue/lunwen_20809.html