Ordered mesoporous MgAl composite oxide-supported K catalysts (xK/OMMA) were prepared and used for soybean oil transesterification with methanol. The prepared xK/OMMA demonstrated a much higher soybean oil conversion (up to 97.0%) along with a 99.8% selectivity to fatty acid methyl ester and a desirable reusability, compared with K-based catalysts prepared with the same K loading and using ordered mesoporous alumina or mesoporous MgAl mixed oxide as support. The superior catalytic performance of xK/OMMA is associated with the excellent structural and surface properties of support OMMA, thus benefiting the generation of catalytically active sites and their highly homogenous dispersion.

制备了有序介孔的Mg Al复合氧化物负载的K催化剂（x K / OMMA），并将其用于大豆油与甲醇的酯交换反应。与以相同的K负载和使用有序K制备的K基催化剂相比，所制备的x K / OMMA具有更高的豆油转化率（高达97.0％）以及对脂肪酸甲酯的99.8％的选择性和理想的可重复使用性。介孔氧化铝或介孔Mg Al混合氧化物作为载体。x K / OMMA的出色催化性能与载体OMMA的出色结构和表面性能有关，因此有利于催化活性位点的生成及其高度均一的分散。