Fe(III)-porphyrin heterogenized on MCM-41: Matrix effects on the oxidation of 1,4-pentanediol
作者:Alessandra Molinari、Andrea Maldotti、Amra Bratovcic、Giuliana Magnacca
DOI:10.1016/j.cattod.2010.09.004
日期:2011.3
characterization of FeIIIP/MCM-41 reveals that this is a robust photocatalyst able to induce the O2-assisted oxidation of 1,4-pentanediol. In particular, photoexcitation of FeIIIP/MCM-41 causes the conversion of 1,4-pentanediol to the aldehyde derivative compound with 70% regioselectivity. It is noteworthy that this product can be accumulated with no formation of further oxidized compounds. Due to its high
金属络合铁介孔四(2,6-二氯苯基)卟啉(Fe III P)已共价连接在介孔材料MCM-41和无定形SiO 2的表面上,得到光催化剂Fe III P / MCM-41和Fe III P / SiO 2。卟啉的添加对这些材料的比表面积和孔隙率的影响已经通过应用于N 2的BET和BJH模型进行了评估。吸附/解吸等温线。可以看出,由于存在卟啉,MCM-41样品表现出最大的修饰:孔径在平均值和分布上均发生变化,在存在卟啉的情况下形成的孔较小,分布较大。 Fe III P / MCM-41的光化学特征表明,这是一种强大的光催化剂,能够诱导O 2辅助氧化1,4-戊二醇。尤其是,Fe III P / MCM-41的光激发引起1,4-戊二醇以70%的区域选择性转化为醛衍生物。值得注意的是,该产物可以积累而不会形成进一步的氧化化合物。由于具有较高的比表面积,可以确保活性中心的良好分散,因此,Fe III P