甜菜碱插层水滑石及其性能研究 论文.doc

甜菜碱插层水滑石及其性能研究 PAGE I PAGE I 甜菜碱插层水滑石的制备及其性能研究 摘 要 甜菜碱在酸性及碱性条件下均具有优良的稳定性，对皮肤刺激性低，生物降解性好，具有优良的去污杀菌、柔软性，抗静电性、耐硬水性和防锈性。由于水滑石具有高的层间距和特殊性能、独特的阴离子可交换性和阳离子可搭配性，作者尝试将甜菜碱插层到水滑石层板间。 本论文是研究酸碱双功能催化剂的基础对比实验。采用低饱和共沉淀法合成水滑石和甜菜碱插层水滑石，并通过XRD、IR等分析方法对产品进行表征，分析谱图确定得到的产物是否为目标产物。用制备出来的复合物去催化羟醛缩合反应，观察其催化效果，并对复合物的耐酸性进行测试。结果表明：甜菜碱可以成功的插入到水滑石的层板间，并具有良好的耐酸性，但是合成的复合物催化效果不明显。 关键字：甜菜碱；插层水滑石；催化剂 PAGE II PAGE II Preparation and Properties of Betaine Intercalated Hydrotalcite Abstract Betaine has good stability, low irritating to the skin, good biodegradability, excellent decontamination sterilization, softness, antistatic property and resistance to hard water and rust in acidic and alkaline conditions. Since the hydrotalcite has high layer spacing and special performance, unique anionic exchangeability and cation can match, the author try to insert betaine to hydrotalcite layers between plate. This paper is the study of acid-base bifunctional catalysts based contrast experiment.Synthesis of hydrotalcite and betaine intercalated hydrotalcite with low saturation coprecipitation, and through the analysis methods such as XRD, IR, the products were characterized spectrogram analysis to determine whether to get a product of the product as the goal. With the preparation of compound catalytic aldol condensation reaction, the catalytic effect was observed, and the acid resistance of composites were tested.Results show that betaine can successfully inserted into the hydrotalcite layer board, and has good resistance to acid, but synthetic compound catalytic effect is not obvious. Key Words:Betaine;LHDs;Catalyst PAGE III PAGE III 目 录 TOC \o 1-3 \h \z \u 1 绪论 1 1.1插层复合材料 1 1.2水滑石背景 1 1.3LDHs的结构特征 2 1.4 LDHs的性质 3 1.4.1酸碱双功能性 3 1.4.2层间离子的可交换性 4 1.4.3热稳定性 4 1.4.4记忆效应 4 1.4.5阻燃性能 4 1.4.6红外吸收和紫外阻隔性能 5 1.5LDHs插层组装方法 5 1.5.1共沉淀法 5 1.5.2离子交换法 6 1.5.3水热合成法 7 1.5.4焙烧复原法 7 1.5.5返混/沉淀法 7 1.5.6 二次组装法 8 1.5.7模板法 8 1.6LDHs的应用 8 1.6.1催化方面