分别以o-,m-和p-硝基苯甲醇与FeCl3的配合物为模板分子,丙烯酰胺为功能单体,二甲基丙烯酸乙二醇酯为交联剂,采用本体聚合法制备了三种Fe(Ⅲ)含量相同的分子印迹聚合物(MIP) o-Fe(Ⅲ)-MIP,m-Fe(Ⅲ)-MIP和p-Fe(Ⅲ)-MIP.并采用扫描电镜、N2吸附-脱附及红外光谱等方法对催化剂结构进行了表征.在以水为溶剂,过氧化氢(30％)为氧化剂的苯甲醇衍生物氧化反应中,该类催化剂表现出优异的催化活性和独特的底物识别性能.当以p-Fe(Ⅲ)-MIP为催化剂时,p-硝基苯甲醇的转化率达到80％,而在其他两个催化剂上均低于58％.这表明Fe(Ⅲ)-MIP催化剂结构中具有与底物分子匹配的印迹空腔与识别位点,对底物分子表现出专一识别性,因而提高了催化剂对底物的选择性.
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