又到了写毕业论文的时候了，小编为大家送上苯酚羟化制苯二酚，希望可以帮助大家写出好的论文!

摘 要

采用共沉淀法合成了铜镁铝不同摩尔投料比的三元类水滑石前体(Cu/Mg/Al摩尔比分别为5：1：2;3：1：4/3;1：1：1;1：3：4/3;1：5：2)，在制备水滑石的过程中使用了微波技术进行晶化。用XRD、FT-IR、SEM对样品进行了表征，结果表明，Cu-Mg-Al摩尔比在这五种情况下都形成了结构良好的水滑石，且Cu的含量越高，水滑石前体结晶度越好。用微波插入法对制得的水滑石前体进行离子交换插层(插入的酸根为钼酸根离子、钨酸根离子、偏钒酸根离子)，XRD结果表明，三元水滑石的插层没有成功，但水滑石自身的颜色发生了变化表明，酸根负载在水滑石表面，也起到了催化作用，偏钒酸根离子催化效果最好，钼酸根有利于对苯二酚的生成，从而增加反应的选择性。

关键词：类水滑石化合物 制备 表征 微波 离子交换

Title: Synthesis and characterization of hydrotalcites as catalysts for the hydroxylation of phenol

Abstract

Cu/Mg/Al hydrotalcite-like compounds with different Cu/Mg/Al molar ratios (5：1：2;3：1：4/3;1：1：1;1：3：4/3;1：5：2)were synthesized by the co-precipitation method and then they were submitted to the microwave radiation in order to improve the crystallinity and minimize the particle size of the solids. The synthesized compounds were characterized by XRD、IR and SEM. The results showed that the structure of hydrotalcite-like compounds were more integrated with the increasing of the content of Cu. Microwave was used to intercalate anions(WO42+、MoO42+ and VO32+ )into the inner layer, the XRD showed that the intercalations were not succeed ,but from the colour of the intercalated samples ,we suggest that the anions may loaded on the surface of the hydrotalcite-like compounds. From the catalysis test results , hydrotalcite-like compounds loaded with VO32+ have good catalytic activity, but with WO42+and MoO42+,the catalytic activity reduced.

Key words: Hydrotalcite-like compounds; Synthesis ; Characterization ; Microwave; Anion intercalate