Remarkable effect of pore size on the catalytic activity of mesoporous silica for the acetalization of cyclohexanone with methanol
Remarkable effect of pore size on the catalytic activity of mesoporous silica for the acetalization of cyclohexanone with methanol
复制标题
DOI：
10.1021/ja0375129
复制
发表时间：
2003-10-29
影响因子：
15
通讯作者：
Namba, S
中科院分区：
文献类型：
--
作者：
Iwamoto, M;Tanaka, Y;Namba, S
介孔二氧化硅(MCM-41)对环己酮缩合反应的催化活性与孔径呈火山型关系。环己酮分子筛的直径约为0.75 nm，而其与甲醇的缩合反应在MCM-41上有很好的催化作用，其孔径约为1.9 nm，较小或较大的孔不宜用于催化。催化剂的催化活性与铝的浓度无关。
The catalytic activity of mesoporous silica (MCM-41) for the acetalization of cyclohexanone shows a volcano-shaped dependence on the pore diameter. The diameter of the cyclohexanone molecule is ca. 0.75 nm, while its acetalization with methanol was well accelerated on MCM-41 with a pore diameter of approximately 1.9 nm, and smaller or larger pores were not suitable for the catalysis. The catalytic activity was independent of the Al concentration.